Please Post D16A1 Swap Info Here

[crazi-85crx]

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?

[cvcc_wagon]

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

[lxndr]

Originally Posted by crazi-85crx

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.

[crazi-85crx]

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?

[lxndr]

Originally Posted by crazi-85crx

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.

[crazi-85crx]

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.

[crazi-85crx]

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?

[lxndr]

Originally Posted by crazi-85crx

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.

[crazi-85crx]

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

[Andrevas]

Originally Posted by lxndr

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?

[lxndr]

Originally Posted by Andrevas

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.

[Andrevas]

Originally Posted by lxndr

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.

[pimpmcdaddies]

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

[cvcc_wagon]

yes. the 2 axles and the center halfshaft

[pimpmcdaddies]

Originally Posted by lxndr

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?