Please Post D16A1 Swap Info Here

I'm still kinda leaning toward making this work. The motor is out of a 1990 CRX and was completely rebuilt a little over a year ago. New bearings, pistons & rings, head rebuilt, etc. The owner of the car just did a swap for a bigger motor and I got the D16A6 for $250.00. I got the AC Compressor, an adjustable cam gear and a few other misc stuff with it. I think I'm so far ahead on cost that I may be able to afford all the extras this motor would require. What do you think? If not I think I'll be able to get my money out of it and start looking again.

I'm still kinda leaning toward making this work. The motor is out of a 1990 CRX and was completely rebuilt a little over a year ago. New bearings, pistons & rings, head rebuilt, etc. The owner of the car just did a swap for a bigger motor and I got the D16A6 for $250.00. I got the AC Compressor, an adjustable cam gear and a few other misc stuff with it. I think I'm so far ahead on cost that I may be able to afford all the extras this motor would require. What do you think? If not I think I'll be able to get my money out of it and start looking again.


I have a couple good questions... What did you get with that engine?

Cause at ebay a zc dohc costs about 800$ with 5spd tranny, ecu, wiring harness, mounting brackets. all the stuff you practicaly for a swap and they pack a mighty 135hp, not bad for a 1.6l dohc w/o vtec.
To get a tranny to maybe fit that would cost easily 400$ at a junk yard cause they are crazy like that. To explain why (JDM) japaneese engines, why they are so cheap with what they have is because of the strict laws over there. A owner of a car in japan has to either replace the engine or scrap the car at 40k miles, thats why there are alot of engines imported from there here. American companies see the import boom and see it as a money oportunity. That engine you have i believe produces 90hp stock, although you say it was rebuilt so it may have more hp due to boreing the cylender walls. As I say thats my opinion, im just trying to save you heart ache at looking at the bigger picture. Plus the zc is a way easier swap. You would have to make coustom motor mounts.

I now realize this is a D16a6 88-91 CRX SI. It's a SOHC W/red valve cover, am I in trouble? I'm hoping this engine will pretty much drop in and my 5 spd tranny will bolt up. Right, I hope?? If not, which trannys will match up?

I also don't think I want to try converting to FI (still leaning though), I didn't get the wiring harness or the ECU, so was hopeing I could bolt on my old intake and a new carb. Right, I hope?? Feel free to convince me going FI isn't so hard....

I've read differing stories about improving performance by switching ECU's and would love to hear your opinions on which would be best, since I'll be shopping for one anyway.

This engine came complete with the exception of a missing altenator, but nothing extra. no shift cable, mounts, wiring harness, gauge cluster, axles, etc. Will I need any of these? What else will I need besides the obviouse water pump, belts, hoses, timing belt, tentioner, etc?



First off, you got hosed!

Secondly, I agree with "88novarules", an '86-'87 USDM D16A1 or JDM D16A1-ZC would solve most all of your problems. But I wouldn't get one off ebay, simply because you'll pay another $400-$500 just to get it shipped. Instead look in your phone book for a JDM engine importer, then go check out the motor and pick it up yourself.

But that's not what the issue is. The issue is that you bought this motor and now you want to know how to make it work, right? I don't know everything that is involved with making this motor work but I can pass along what information I do know.

You will need to use this motor with either single port or multi point fuel injection. The D16A6 motor has an electronic advance distributor that requires an ECU in order to operate, so as long as you need to have the ECU you might as well run a full multi point FI system. This will require that you have a donor wiring harness from an '88-'91 CRX SI or an '88-'89 Integra. Besides, the ports on your carbed manifold won't match up to the D16A6 head without some grinding.

Your transmission will not bolt up to this motor. You will need to get one from an '88-'91 Civic/CRX. While you're at the junk yard getting a wiring harness and tranny, also pick up the radiator hoses, throttle cable, and shift linkage.

Keep in mind that this motor will not directly bolt in to your car. You will need to modify ALL of the motor and transmission mounts. Also you will need to construct your own CV axles by using the inner CV joint and shaft from an '88-'91 Civic/CRX, and the outer CV joint from an '84-'87 CRX. Im not sure if the '86-'89 Integra knuckles will work instead of making your own CV shafts since I've never compared the splines of an Integra knuckle to those of an '88-'91 Civic/CRX CV shaft. I do know that the splines are different from an '87 to '88 CRX because when my CV joint went out, I ordered a rebuilt CV shaft for an '86 CRX but received one for an '88-'91 CRX, and of course I didn't notice until I was 3/4 of the way into the project.

You'll probably want to ask around in the '88-'91 Civic/CRX forum to see which ECU is best, but I think you can use a PM6 and have it chipped. An 88-'89 Integra will also work, but these work better for the D16A6-ZC motors or for Mini-me swaps with a Vtec controller.

You will also need a VSS from either an '84-'87 CRX HF (best), an '88-'91 Civic/CRX, or form an '88-'89 Integra. The CRX HF VSS is best since it fits right into your gauge cluster. The '88-'91 Civic/CRX VSS won't fit in your gauge cluster and the '88-89 VSS will fit but the speedo will be incorrect.

Well, that's about all I know.

But...
I have to ask, why are you going through all this effort to swap in a motor that only gets 10 Hp more than a stock '85-'87 SI motor? If that's is all the HP you'll gain, why not just rebuild and modify the stock EW motor? The stock motor can be bored out to accept D16A1 pistons, this along with a cam, an SI head, an exhaust manifold, and a CAI and you'll produce more power for less money and effort. What you paid for the new motor would have paid for the D16A1 pistons and a reground camshaft.


Anyway,

Good luck!

I actualy think I would be going from a 76HP D15a2 to a 109HP D16a6. I could be wrong.....

Like you said, I got hosed! My ignorance and a shifty character who told me it was a D16a1. He said it was the same thing and I didn't know any better.

I found a thread on redpepperracing with lots of pics where a guy had done everything I would need to do just to mount this motor. It's not pretty! It's doable, but requires alot of cutting and welding just to manufacture the mounts. The very thing I want to avoid!!!

Any way, I was hoping I could make it work but think your saving me alot of time and money. I'm sure I'll find someone who could use a rebuilt D16a6.

There are several Importers here in NE Florida and I'll go with an integra D16a1, unless I find a steal on a donor car that would make this motor work.

Considering I'm swaping from a carbed 87civic what are the advantages & disadvantages between the '86-'87 USDM D16A1 and the JDM D16A1-ZC?

The only major difference between the USDM and JDM motors is the cams, that and the JDM motors will only have about 30,000 miles on them. The USDM D16A1 motor produces about 115HP while the D16A1-ZC motor puts out almost 140HP. Either engine will install exactly the same, and you can either install all the FI electrical from a donor '86-'87 Integra or construct a carbed manifold for it (ask cvcc_wagon for some advise on constructing a manifold).

If you decide to go carbed use the '86/'87 motor since it has a vacuum advance distributor. If you decide to go FI then you can also use the '88/'89 motor since you will have to install all the electrical anyway. The advantage of the '88-'89 D16A1 is that it uses an electronic advance distributor, ELD (electronic load detector), and a VSS (vehicle speed sensor). The '88/'89 motors also produce slightly more HP due to the domed pistons (higher CR) and larger intake plenum. The disadvantage of the '88/'89 motors is that thay have weaker connecting rods than the '86-'87 motors, but this shouldn't be an issue unless you're planning to run a turbo or NOS.

Oh, and about the 10 Hp more thing, I was just trying to put things in perspective. To me it seems that you would be putting alot of effort into swapping in a motor that won't give you much gain, when you could spend less effort rebuilding your stock motor to produce just as much power or swap in a D16A1. If you wanted to go through all the trouble of swapping in a motor that won't directly bolt in, you'd be better off swapping in a B-series motor. Granted there are more aftermarket parts available for the D16A6, but power is limited without spending alot of $$$. This is why most people with '88-'91 Civic/CRX's who are looking for more power either do a mini-me swap (VTEC), or they swap the D16A6 for a ZC motor.

The only major difference between the USDM and JDM motors is the cams, that and the JDM motors will only have about 30,000 miles on them. .

Do they realy still have '86-'87 integra motors with under 30,000 miles coming out of Japan nearly 20 years later???

Didn't they make a JDM D16a1 with a carb at some point? If so how hard would it be to find that intake and aftermarket carb to match?

I've read numerouse how to's on this swap but all of them involved swapping into a Civic with FI. does anyone know of links to info involving the switch from Carb to FI on an 87 civic? I'm well capable of doing the wiring, I just would like to read up on any of the problems I may incounter and would like a better understanding of the extra parts I would need to find in order to make the switch.

I for sure don't want to be the first egg head to do this! I'm sure avoiding the headaches of tuneing and maintaining a carb would be worth the extra effort though.

Thanks for all the help!!!!

yes there was a carb version of the D16A1 (both dual sidedraft and single downdraft) way back around 83~84 but only in asian and australian markets. the manifolds are not easy to get ahold of however. search ebay for a few years and you may come up with something...

I've read numerouse how to's on this swap but all of them involved swapping into a Civic with FI. does anyone know of links to info involving the switch from Carb to FI on an 87 civic? I'm well capable of doing the wiring, I just would like to read up on any of the problems I may incounter and would like a better understanding of the extra parts I would need to find in order to make the switch.

I for sure don't want to be the first egg head to do this! I'm sure avoiding the headaches of tuneing and maintaining a carb would be worth the extra effort though.

Thanks for all the help!!!!
ahem... have a look at the first post in this thread, a few months ago this fellow emailed me asking me to add his webpage writeup on converting from carb to Fi with the D16
http://www.the-compound.com/dylan/crx/

hey guys whats up! sorry to take so long on my up date....
so heres what i got.... the motors a jdm d16...the things in mint condition its...its fi.it brings the motor,trans,harnes,ecu,fuel pump,shift linkage,and a hole bunch of stuff....under a grand$$$...pretty good hu!!!! he says that my carb manifold can be used,and even if it cant,he makes a custom spacer of aluminum or this really hard as plastic...the aluminum one looks expensive,so i want to try out the plastic one....i really whant to see if its realliable and if it is....gona make a few of them,sell them for the same price it cost me,and then you guys tinker it out a little bit....i can make my 4 door f/i but first i want too see the difference,and give the poor (like me :) ) diffrent and more cheeper ways to go!!!!!

what about a parts list to clear this up, so much scattered info is kinda overwhelming

The essential parts needed to swap in an '86-'87 Acura Integra D16A1 are:

D16A1 motor, tranny, tranny mount, shift linkage, CV shafts, steering knuckles, throttle cable.

Additional parts are:
ECU, air intake tube (if not using a CAI), donor engine wiring harness (since you'll need to switch some pins around), exhaust manifold (if not using a header) stiffer torsion bars, and a brake swap.

If you're on a budget, the D16A1 will run using the CRX SI ECU until you can get the integra ECU, None of the parts from your stock EW/D15 will fit on the D16A1 motor, so you will need a complete donor motor.

An '88-'89 D16A1 will require the same parts, but you will also need a CRX HF VSS, and a complete '88-'89 Integra engine wiring harness including the ELD, and an '88-'89 ECU.

yo guys.....the d16a6 does come carb...its in a place called jr motor connection....its scary just looking at it...it looks like a normal carbed civic...ill try to take some pictures with my cell phone...

Why do you want to put a D16A6 in your car?

sorry...i ment d16a1....my bad...


its that me so stupid......!duhhhhhhhhhh...

Oh yeah, you guys were right. The JDM '85-'87 Integra's did have a carbed version of the D16A1. I found some info on a 1G Teg website.

they came with a single downdraft pretty similar to the one on the Canadian EW2 and also with sededrafts kind of like the old prelude ones. it's pretty rare but you can get a DCOE manifold to run dual sidedraft Webers or Mukunies (sp?) or whatever.

www.effinmotorworks.com/Zeno_Writeup.htm....
check it out.. its a wagon...but its the same platform.....

pretty cool. i'll add it to my first post

i am going to be doing a d16a1 swap from the 86-87 integra into my 87 crx si. i have been reading this post and some others. I know pretty much everything i need, so no problem there. my question i guess is will I or will i not have to modify my stock crx si harness? i have read that no modifications to the harness are needed and i have read(in this topic) that some pins need moved around. can anyone clarify on wether or not i am going to have to modify my harness? thanks

can anyone clarify on wether or not i am going to have to modify my harness? thanks


Most of my wiring research has been for the '88-'89 D16A1 motor since that's what I'm using. But I have checked out the wiring for the '86-'87 motor and it appears the same as the wiring for an SI. If I recall correctly, I think it's just the connectors for the alternator and emissions box that are different.

I had an '87 Integra ECU in my '86 SI and it ran perfectly with no error codes. All I did was pull out the SI ECU and replace it with the Integra ECU, no wiring mods at all. The D16A1 will even run off your stock SI ECU, but it is recommended that you swap it for a PG7-662 ECU for better performance.

If a had a 87 crx it realy good shape and a d16a1 it it bluh bluh bluh,
how much do you think i could sell it for if I needed to.



also
Iv read this whole thing and i just have a few siple clarification questions:

can I put a d16a1 from integra into my 87 crx (ew2, carb) with all the fuel pump linkage, intake etc?

will a 88 civic dx intake do anything for me here?

do I need the integra axles?

will the axles fit on the wheel assembly?

why is there so much hair on my back?

do I need to run all new fuel lines?

what is a charcoal box?

is it nessisary to do the whole steering rack, or just the knuckles? and why? (this part reallly confuses me)

will fenders from a 87(3rd gen right?) hatch fit on a 87 crx?

my 91 civic engine wont fit in a 87?

is the carb crx always an "hf" (im in canada), i ask because of all the ASS (he,he, bum) talk and the shift light becoming the error light?(clarification)

what would the weight be of a 87 crx with a d16a1?

thanks

If a had a 87 crx it realy good shape and a d16a1 it it bluh bluh bluh,
how much do you think i could sell it for if I needed to.



also
Iv read this whole thing and i just have a few siple clarification questions:

can I put a d16a1 from integra into my 87 crx (ew2, carb) with all the fuel pump linkage, intake etc?

will a 88 civic dx intake do anything for me here?

do I need the integra axles?

will the axles fit on the wheel assembly?

why is there so much hair on my back?

do I need to run all new fuel lines?

what is a charcoal box?

is it nessisary to do the whole steering rack, or just the knuckles? and why? (this part reallly confuses me)

will fenders from a 87(3rd gen right?) hatch fit on a 87 crx?

my 91 civic engine wont fit in a 87?

is the carb crx always an "hf" (im in canada), i ask because of all the ASS (he,he, bum) talk and the shift light becoming the error light?(clarification)

what would the weight be of a 87 crx with a d16a1?

thanks
holy hell that's a lot of questions. first of all resail vale is really determined by where you live and the overall condition of the car. to the right buyer i would say that having the d16a1 would put you ~$500 more then the same car without assuming that the rest of the car was clean and rust free. that's just my best guess however.

can I put a d16a1 from integra into my 87 crx (ew2, carb) with all the fuel pump linkage, intake etc?
there is a link in the first post of this thread from a fellow who put the FI motor into a carb CRX. you will have to use all the wiring and fuel system from either a CRX Si or an Intera.

will a 88 civic dx intake do anything for me here?
no

do I need the integra axles?
yes, the CRX axles are unequal length, the integra uses a intermediate shaft in the center so that each CV shaft is the same length.

will the axles fit on the wheel assembly?
i believe the wheel assy. has to be replaced with the integra ones. i can't remember if it is to take advantage of the bigger brakes or if it is because of a different spindle size, others can provide more info in this.

is it nessisary to do the whole steering rack, or just the knuckles? and why? (this part really confuses me)
just the knuckles (see above)

why is there so much hair on my back?
bad genes

do I need to run all new fuel lines?
you should, however i have heard of people using the stock DX/HF lines. ideally you would use either integra or SI lines. you could even go so far as to use steel braided lines but that could get a little expensive.

what is a charcoal box?
part of the emissions system, if you can figure out how to hook it up properly use it, if not chuck it.

will fenders from a 87(3rd gen right?) hatch fit on a 87 crx?
civic fenders will not fit the CRX

my 91 civic engine wont fit in a 87?
Hasport makes a D-Series mounting kit but completing a D-Series swap in your 1G will probably set you back $3000 by the time you are finished so most opt. not to do it. there is more to it then simply mounting the motor in the engine bay.

is the carb crx always an "hf" (im in canada), i ask because of all the ASS (he,he, bum) talk and the shift light becoming the error light?(clarification)

there are 2 carb versions, the DX which is 1.5l and the HF which is the 1.3l. the HF is an econo. car which is why it has the shift light and whatnot. the shift light tells you when to shift to get the best gas mileage, not when toy get the best performance. if you rev it past the shift it may give you an error reading. having the HF is of some advantage as the integra motor uses the same speed sensor technology as the HF and with some modification you can use the HF dash unit with the integra motor. The HF is also lighter then the DX or the Si but i don't know the exact weight if the car or the car/motor combo.

if I had a complete integra and a complete crx 1.5 then I have everything i need right? 1 engine, 1 harness, 1gauge cluster from integra, etc. what problems will I run into?

if I had a complete integra and a complete crx 1.5 then I have everything i need right? 1 engine, 1 harness, 1gauge cluster from integra, etc. what problems will I run into?

Yes, you will have everything you need. But you won't need the gauge cluster (it won't fit in the Civic anyway).

The only reason you would need the gauge cluster is if you are swapping in an '88/'89 D16A1. This is because the '88/'89 ECU uses a VSS (vehicle speed sensor) that is located in the speedo. But if you just swap the Integra speedo into the Civic gauge cluster, the speedometer will not read accurately. If you are planning to use an '88/'89 D16A1, track down a CRX HF gauge cluster since it already has a VSS installed. You won't have to swap the speedo at all if you use an '86/'87 D16A1.

Also, you'll need to stiffen up the front torsion bars to accomodate the added weight. You can either swap the whole Integra crossmember/T-bars or locate a set of 24mm T-bars. If you've lowered the car, you might consider 27mm T-bars to keep it from bottoming out.

BTW resale value is determined by the condition of the car, market and location, not the sum of it's parts. Some potential buyers may feel that a D16A1 swap actually lowers the value of the car. This is because most people want a well maintained, unmolested car. Also keep in mind that you'll never get the money invested in the car back out of it. IE: say you bought your car for $1,000, you spend another $1,000 rebuilding the engine, $500 on suspension, $1,000 on bodywork/paint, $500 on interior, $200 for a BIGAZZ spoiler, $500 on a superpimpfullofscoopsandstuffthatruinsaerodynamics body kit, $1,500 on wagon wheels and rubberband tires, and $200 on neon lights, strobes and anything else to attract attention because you were neglected as a child and have low self esteem. In the end your car may only be worth $3,000 on a good day.

Not to say this is how you plan to build your car, or that you have an inferiority complex, this is just an exmple. I have rarely seen tastefully built 1G CRX's sell for more than $3,000, so don't be concerned with the value of the car and just have fun with it! Drive it until you wreck it, then reuse the parts to build another one!

will a 88 civic dx intake do anything for me here?
It won't fit on the D16A1

will the axles fit on the wheel assembly?
The splines are different. You need to swap the Integra knuckles too.

why is there so much hair on my back?
Because you're a monkey.

what is a charcoal box?
If you're a hippie, hook it up. But you don't need it, and you'll still pass the sniff test without it. However, if you live in an area where you have an underhood emissions inspection you will probably need to have it installed. The Integra uses a different emission system configuration, so when you swap the motor just swap the emissions crap too. If you decide not to use the emissions box, the only part that you need out of it is the MAP sensor.

my 91 civic engine wont fit in a 87?
Not easily, You will have to fabricate your own motor/tranny mounts, and swap all the same parts that you would need for an '88/'89 D16A1 swap, plus you won't get as much HP as you would with a D16A1 swap. This is why most people don't bother to swap in newer D-series motors. However you would gain by swapping in a B-series motor.

i think lxndr needs to start taking his pills again :rolleyes:

whats the harness mods, if any, if I swap the engine, computer etc?

you won't be modifying it, you'll be installing it

so Its "plug and play" esentially?

i think lxndr needs to start taking his pills again :rolleyes:


I got new ones! They're a pretty blue color!

so Its "plug and play" esentially?assuming you have the integra harness

will a D16a1 fit in my 85 crx?, it's a carb'd 1500cc with nearly 300k clicks on it now.

P.S.- what exactly is a D16a1 motor anyway? how much better is it than what i got?

read the entire thread. some of your questions could even be answered on THIS page

will a D16a1 fit in my 85 crx?, it's a carb'd 1500cc with nearly 300k clicks on it now.

P.S.- what exactly is a D16a1 motor anyway? how much better is it than what i got?

Yes, a D16A1 will fit in your '85 CRX, but please read the whole thread for details.

The D16A1 is a dual over head cam (DOHC) motor that was available in the USDM '86-'89 Acura Integra, EDM '86-'89 Integra and '85-'87 CRX, and a JDM ZC version of the D16A1 was available in the '85-'89 Integra and '85-'87 CRX. The D16A1 was the predecessor to the B-series motors, but it shares no "bolt on" parts with either a D-series or a B-series motor. The head is similar to a B-series while the block is similar to a D-series, and NO, a B-series head will not fit on a D16A1, neither will any other D-series head. Some parts from D-series motors will fit, like the water pump, oil pump, connecting rods and throttle body, but the intake manifold, cams and distributor from either D or B-series will not fit. You can however bolt any '88+ D-series exhaust manifold/header onto a D16A1 with a little port matching, this also opens up turbo possiblilties without having to custom make an exhaust manifold.

well, i spoke with someone from Honda and he told me that swapping in a D16 wouldn't be worth it. so i've decided on a B16 with a cable clutch, from what i hear it offers 162hp and will be killer in a crx. he's already done 3 swaps like this, so now all i need is the engine :) is an autowreckers a good place to look?

well, i spoke with someone from Honda and he told me that swapping in a D16 wouldn't be worth it. so i've decided on a B16 with a cable clutch, from what i hear it offers 162hp and will be killer in a crx. he's already done 3 swaps like this, so now all i need is the engine :) is an autowreckers a good place to look?

Has this person ever swapped a B-series into an 84-'87 CRX?

Did he also tell you that in addition to the cost of the motor you need another $1,600-$1,800 to spend on a motor mount, wiring, linkage and CV kit in order to swap in a B-series?

Don't get me wrong a B-series motor is a better motor, it has a shorter stroke than a D-series and there is more aftermarket support. But how much do you want to spend?

The reason the D16A1 swap is appealing is because you can find a used '86-'89 Integra for about $500 and have everything you need for the swap. You can also get an '86-'89 Integra ZC motor which puts out about 135hp in stock form and with a CAI, header, and cam regrind you can add at least another 10hp.

I just finished putting my rebuilt D16A1 together, and with a ported head, ZC intake, ZC cams, header and lightened flywheel, my machinist and I have conservatively estimated the HP to be between 150-160. Granted I won't know the actual numbers until I put the motor in and dyno it, but 150-160hp from a NA motor is enough to give any B-series motor a run for it's money. Also, I rebuilt this motor for about $1,200 and it will drop right in! Including the motor rebuild, I have invested about $2,000 into this project, that includes the Integra swap parts (knuckles, CV shafts, tranny, etc.), clutch, and an LSD for the tranny.

Most Honda enthusiasts are into '88-'91 (2G) CRX's, and he's right, a D16A1 swap in a 2G CRX would just be stupid. The D16A1 won't bolt into a 2G and the fabrication needed to swap the D16A1 motor into a 2G is more than the effort needed to swap a B-series or 2G ZC motor. But the 1G CRX is an entirely different car from the 2G, the same rules don't apply.

you make a good point, i'll have to think about it.

i'll have to see if i can find a d16 from an 86-89 integra i can swap in.

i found this '86 prelude with an ET2 1.8 12V SOHC Dual Sidedraft 100hp@5500rpm 104tq@4000rpm at a pick-a-part. will it fit?

i found this '86 prelude with an ET2 1.8 12V SOHC Dual Sidedraft 100hp@5500rpm 104tq@4000rpm at a pick-a-part. will it fit?

NO.

i didn't think so. i'll keep looking for a 86,87 integra.

I have invested about $2,000 into this project, that includes the Integra swap parts (knuckles, CV shafts, tranny, etc.), clutch, and an LSD for the tranny.
Where did you get your LSD?

Where did you get your LSD?

It's a Phantom Grip (AKA Phantom Slip).

IMO, save your money for a Quaife or something similar. The PG LSD constantly slips, the next time I take the tranny apart I'm going to throw the PG in the trash and replace it with something of higher quality.

It's a Phantom Grip (AKA Phantom Slip).

IMO, save your money for a Quaife or something similar. The PG LSD constantly slips, the next time I take the tranny apart I'm going to throw the PG in the trash and replace it with something of higher quality.
I haven't figured out where to pick up a Quaife or a used Mugen LSD

I would never install a PG, they really are trash.

So if you had a donor Integra could you just swap the whole axle over?

yes. the 2 axles and the center halfshaft

Yes

An '86-'89 D16A1 from an Integra will fit into any '84-'87 Civic or CRX. The '86-'87 D16A1 motors will be the easiest to swap into an '85-'87 SI since the electronics are near identical. The '88-'89 D16A1 motors are a little more involved since they use a VSS (vehicle speed sensor), ELD (electronic load detector), electronic advance distributor, and a different ECU.

In order to swap any of these motors into a carbureted car you will also need a donor wiring harness, ECU, fuel pump and some sort of check engine light (PGM-FI light) to let you know if the ECU is sending a code. Or you could convert the D16A1 to run on carburetors. But be warned, you're on your own for a carbed intake manifold since no one makes them for a D16A1.

There are other differences between the motors as well. For instance, the '86-'87 D16A1 motors use slightly stronger rods and have dished pistons. While the '88-'89 D16A1 motors use slightly lighter rods with domed (interference) pistons. The '88-'89 motors also produce a little more power over the '86-'87 motors (stock comparison) due to the increase in comression ratio and also because of the slightly better flowing intake plenum.

The main difference between the '86-'87 and the '88-'89 motors is in the cylinder head. The cylinder heads are swappable between the years but are not compatable with the different engine management system. Meaning you CAN put a, '88-'89 D16A1 cylinder head on an '86-'87 block, but in doing so you will need to use the '88-'89 ECU, VSS, distributor, etc.

I've got an 89 Teg donor car.So can I use the distributor and ECU from the teg (and engine)on my '87 Si or must I use distributor and ECU from an earlier Teg?

I've got an 89 Teg donor car.So can I use the distributor and ECU from the teg (and engine)on my '87 Si or must I use distributor and ECU from an earlier Teg?

You can swap everything from the Integra. You will also need to swap the wiring harness or rewire your CRX harness. If I had a donor Teg, I'd just swap the wiring harness. Use the Teg ECU, the CRX ECU will not control the electornic advance distributor on your '89 Teg motor.

You can swap everything from the Integra. You will also need to swap the wiring harness or rewire your CRX harness. If I had a donor Teg, I'd just swap the wiring harness. Use the Teg ECU, the CRX ECU will not control the electornic advance distributor on your '89 Teg motor.
Thanks for reply..Is it a mission fitting the wiring harness?I'm not a lover of loads of wires!
Had a result with the 89'
donor car,80000 miles,one lady owner.Off with its head...:evillol:

i did that same swap and i used the whole 89 integra wiring harnes that runs from the ecu all the way to the taillights to the headlights took me like a week.... also u need to install the speed sensor either from an hf 1st gen or do like i did use the integra gauge cluster..

i did that same swap and i used the whole 89 integra wiring harnes that runs from the ecu all the way to the taillights to the headlights took me like a week.... also u need to install the speed sensor either from an hf 1st gen or do like i did use the integra gauge cluster..
Does the Teg gauge cluster fit in the original dash housing or just change the speedo clock?

it was the stock crx dash that i cut out a little bigger to install the integra gauge cluster the water temp the speedometer the whole cluster, it wasnt pretty but it got the job done... im not very good at wiring thats why i did it that way... i didnt know that the hf had a speed sensor ortherwise i would have done that...

You can swap everything from the Integra. You will also need to swap the wiring harness or rewire your CRX harness. If I had a donor Teg, I'd just swap the wiring harness. Use the Teg ECU, the CRX ECU will not control the electornic advance distributor on your '89 Teg motor.

Hi I've got the whole interior stripped out in my Civic.Wanted to know if the whole wiring harness would need to be changed (ie.lights etc)or does the harness divide so you can just use the engine section for the electronic advance for the conversion?Want to get this straight before I get into demolishing the Teg...
help appreciated as always...

when i first had my zc running i just used the whole integra wiring harness its pretty much the same except for a few things like the integra has pop up headlights so i had a relay that i didnt need. i also used the whole integra fuse box and the integra gauge cluster because the need of the speed sensor.. i tried weeding out the engine control from the chasi wires after i blew the motor so i could rebuilt with a cleaner look but theres just so many that i wound up screwing it up.. i have heard that peoples done it b4 but aparently they have more patients than me

Alright, Alright,
I know that there is probily some info here for me but there is so much info that Im tired. I have an 87 CRX. I have a D16Z6 out of a 95 civic. Do the Motor mounts and tranny mounts fit. And any other info that i need that I dont have (So everything) would be greatly appriciated. What axles should I use and fuel system rewuirements and shift linkage and, and, and....


Thanks to all who help.

I'm not sure if this has been covered or not but I haven't seen anything on it. Are the valves in a zc head the same as what's in a d16a1? from what I've read sofar both engines are pretty similar. What is different about the zc that makes the extra 20-25hp over the d16a1?

the cams i think make up the extra horsepower... not sure bout the valves though

lxndr will probably know better but i assume they are. 85crxzc is right, the extra hp is due to the cams and a larger intake manifold

It's all in the cams, everything else is pretty much the same.

The '85-'87 ZC motors have a dual plate throttle body just like an '85-'87 SI but the design of the intake manifold is essentially the same as a D16A1 (ZC also has an EGR on the IM).

The '88-'89 Integra ZC IM is almost exactly the same as an '88-'89 D16A1, and the '88-'91 Civic ZC has the largest IM (which is what I'm using).

The '88-'89 Integra D16A1 and '88-'91 Civic ZC motors have lighter rods and a higher compression ratio than the '85-'87 D16A1/ZC1 motors.


Here's a pic of an '88-'91 Civic ZC intake manifold on my '89 D16A1 with ZC cams (amongst many other mods).
http://memimage.cardomain.net/member_images/10/web/2278000-2278999/2278318_8_full.jpg
More info here:
http://www.cardomain.com/ride/2278318/1

thanks for the info guys! I have a 85 carbed crx and a 87 integra that were both more less given to me. I picked up the rex for $150 and the integra for free they just wanted it out of there yard. I've swapped out the entire wiring harness along with the fuel pump to make it fuel injected I got everything in and when I hit the key I got no compression. It has a new timing belt which leads me to believe someone either broke there old one or replaced it and didn't adjust the timing at all because the timing marks are way off plus there's alot of slack in the valves so i'm guessing the valves are bent. I have a 88-91 zc block with scared up piston dome's but good valves and cams. I'm hoping I can put the zc valves and cams into the 86-87 intergra head and be good to go.

You can actually swap the whole ZC head onto the D16A1 block. The ZC head bolts on exactly like the D16A1 head (it just looks a little different), just remember to use the D16A1 cam gears.

ok i guess i'm a little confused... are the pistons in the 88-89 integra d16a1 the same ones that are in the civic zc 88-91? I alson noticed on an engine chart the d16a3 is rated at 118hp and the d16a1 is rated at 113 but it shows the d16a1 to be out of a 86-89 teg and the d16a3 to be out of an 88-89 teg? Just want to make sure i have the right pistons and rods before i start building the engine..