TT Conversion

Hey can someone link me to a thread on a parts list and steps on how to do the TT Conversion? I've checked 3Si but I must be dumb because I couldn't find it :banghead:

Im doing my research and trying to figure out if the hassle and money is too much to make it worth it.

And if it is worth it, I need to know what the hell it is im going to be doing, or will get done.

Shit, my bad, I should have just checked the "Read before you ask" thread. Sorry!!!!! :shakehead:shakehead:shakehead

well leave this thread open to post any questions you have about the TT conversion. i just helped a friend do his TT conversion. well i practically did it for him, but he helped a lot. i plan on doing the TT conversion around christmas. but since i already have one under my belt, feel free to ask away... as detailed or broad a question you can conjure

well leave this thread open to post any questions you have about the TT conversion. i just helped a friend do his TT conversion. well i practically did it for him, but he helped a lot. i plan on doing the TT conversion around christmas. but since i already have one under my belt, feel free to ask away... as detailed or broad a question you can conjure

cool thanks :D

Before i really consider it too much and start thinking of coming up with funds for it, would it be just as easy to just swap engines and put a TT engine in the car instead of having to find parts and then go through the trouble of putting them all on?
I found this and am thinking about buying the engine if I can come up with the money for it. Lemme know your input guys

http://www.3si.org/forum/showthread.php?t=378933

of course I'd still have to buy the TT oil pan but other than that and the downpipe is there anything else I would need?

Edit:
Oh yea, and even though it's coming out of a 93 i shouldn't have any problems as far as the year difference right?

C'mon guys, I need your input :D

definitely need to do some searching.

when in doubt, check the FAQ. halfway down the 1st post there are some links pertaining to the TT conversion (http://www.automotiveforums.com/vbulletin/showthread.php?t=301872&highlight=tt+conversion).

about swapping engines. your NA motor has a 10:1 compression ratio. the TT motors have a 8:1 compression ratio. so 10lbs of boost on a 10:1 will yeild more power than the same boost on a 8:1 motor. however, with a 10:1 motor, there is a fine line for tuning. get it wrong and you could easily blow up your motor. whereas with an 8:1 motor you have more leeway with your tune being on or off.

you should read up on tuning. here is a good page http://www.stealth316.com/2-safcii-adjust.htm. its long, but explained very well. basically, the highest compression a motor can have and run on pump gas is around 11.5:1. the honda S2000s have that CR (compression ratio). the 3S NA motor is 10:1, which is still very high. and the 3S TT motors have 8:1.

when you slap on a turbo to a high compression motor, you are forcing even more air into the cylinder when its already almost maxed out. so you'll need to carefully tune the car (using an air flow converter such as the Apexi SAFC or equivalent piggyback) so that you don't get an extremely LEAN condition and get knock or even blow the motor.

but the bottom line is this: you can do the TT conversion on your NA motor for about 1,000 if you're frugal and cut corners, but expect to spend around 1500 minimum to do it right (wideband O2, SAFC, TT ECU, EBC (electronic boost control)). if you drop in a TT motor, then you'll spend more, but tuning will be easier. tuning is actually pretty simple with a SAFC or equivalent if you understand things.

but you should understand the limitation of a FWD TT conversion.
1) traction--when you turbo any FWD car, or have a significant amount of horsepower in a FWD car, there will be traction issues. you won't be able to launch the car without slicks. you won't have traction in 1st or even maybe 2nd gear if you punch it hard. however, from a roll on the highway, you easily beat most V8s on the road b/c your drivetrain loss is minimal.

2) things break-- the FWD transmission was only made to sustain the power put down by the NA motor...around 220 crank hp. when you increase this power, the differential and then 2nd gear tend to be the first internal parts to break. so its a good idea to beef up your FWD tranny, or you can simply drop in an AWD tranny converted to run in FWD mode. the AWD tranny is much stronger and can easily withstand the abuse.

--

in addition, you should upgrade motor mounts. your stock rubber mounts, being 10+ years old, are probably already worn out or will go quickly with the increased hp. i recommend Maximal Performance's solid motor mounts, but you could also get some Polyurethane mounts.

a TT ECU is almost a MUST. people have tune with an NA ECU, but the TT ECU knows what boost is and can compensate accordingly. TT conversion + NA ECU = major headaches and less power.

a Wideband O2 sensor is a very good idea for tuning, however not completely necessary. the car can be tuned via the stock Narrow band O2 sensor. in order to monitor this, you need a Datalogger. see my post in the FAQ on page 2 for more info. since you have a 96 3S, datalogger compatibility is scarce, but i think Shiver's datalogger will work.

boost control is a must. you can get a simple manual boost controller (MBC) for $30 on ebay. ask stealthee, he knows which one and where to look. however an electronic boost controller is a good idea as it prevents boost spikes and other such things.

also, you'll need a boost gauge. and EGT (exhaust gas temperature) gauge is also a good idea as it allows you to somewhat watch your tune.

---

that's all i can recall for now off the top of my head. after you do some searching and reading, ask some more questions.

great, thanks for the feedback. :D

^^^Good stuff, I am running 10:1 with my conversion and kinda wish I had went with 8:1. Im really limited by the compression. It still makes good power though no doubt about it.

Well so far these are the things I've bought:

SAFC - $180.00
EGT Gauge- $90.00 (plus shipping)
Boost Gauge- $10.00 (plus shipping)
HDI EBC- $145.00 (plus shipping & ins)

1993 TT Engine - 4 bolt main
7,XXX miles after rebuild
- New Pistons & rings
- '99 Lifters
- New Rods
- Reground crank shaft
- New Rod Bearings
- 3SX Performance Light Weight Crank Pulley(not an underdrive, but 6lbs lighter than stock)
- All Gatorback belts
- New Timing belt
- Accel 8mm Wires
- New Spark Plugs
- 3SX Solid Motor mounts
- New Oil Pump
- New Water pump
- all gaskets replaced
- Starter & Alternator

$2500.00
http://i27.photobucket.com/albums/c164/jace16mx/myCar/100_0099.jpg

I pick up the engine Saturday and the rest is on the way :D

DAMN this was pretty fast! lol good luck! what about installation?

DAMN this was pretty fast! lol good luck! what about installation?

Well I wont have to pay for that because my mom's boyfriend is going to help me with it. He used to have a body shop so he has all the tools and engine hoist at his house. Which is pretty sweet :D
I can't wait, Im soooo psyched!! :rofl::rofl:

lol that WAS fast..good luck

and be carefull with that car when its all done and ready to run, fast cars can kill ya

Thanks! and I will be careful :)

Well I wont have to pay for that because my mom's boyfriend is going to help me with it. He used to have a body shop so he has all the tools and engine hoist at his house. Which is pretty sweet :D
I can't wait, Im soooo psyched!! :rofl::rofl:

How convenient! Good luck again and be careful.

-I wish I had the time and money to do this:disappoin


--On a happier note, can you please sell me your speed sensor connector!?!?

--On a happier note, can you please sell me your speed sensor connector!?!?

just go junkyard-hunting and hack one off a car.

just go junkyard-hunting and hack one off a car.

I've had no luck so far with yards but I'm still trying:banghead:

How convenient! Good luck again and be careful.

-I wish I had the time and money to do this:disappoin


--On a happier note, can you please sell me your speed sensor connector!?!?
As long as I dont need it, I'll let you know, its gonna be a week or so before everything is swapped.

Also guys, What should I do with the old engine? it has 152k miles and I think the valves were starting to wear because every once in awhile I'll get smoke out my tail pipes. I just had the rear main seal replaced, and a new timing belt w/tensioners, ac belt, and some other things. Should I sell it to salvage, or try to sell it to someone who wants to rebuild?

As long as I dont need it, I'll let you know, its gonna be a week or so before everything is swapped.

I doubt you'll need it since your getting (or already got lol) that complete TT engine, but please let me know ASAP. Thanks a lot!

Getting the engine doesnt mean shes getting the harness. I need a speed sensor connector now too. Mine shorted and melted the plug in/

if you're near a county tech hs, u can give it to them, let them rebuild it(they may even give it back when it's done, not like u'd need it)

Hot3000, I found one on 3si already so forget it, and I might have found one for you too, Stealthee, I'll let you know.

Ok :)

Hot3000, I found one on 3si already so forget it, and I might have found one for you too, Stealthee, I'll let you know.

Alright, so I picked up the engine Saturday and everything looks fine. I dont know why I didnt think of this earlier but I got the ECU and then was told I wouldnt be able to use it because it came out of a car with a MTX. :banghead: Sooo, now im worried its going to be pretty hard for me to find a ECU out of an ATX car that runs turbos. What do you guys think?

I thought you were doing the MTX conversion?

Ok, so are you still using the NA harness? If so ECU's dont matter. MTX and ATX ECUs are identical.

I thought you were doing the MTX conversion?

Was going to but changed my mind

Ok, so are you still using the NA harness? If so ECU's dont matter. MTX and ATX ECUs are identical.

I was told by someone I wasnt able to use the NA wiring harness because it wouldnt hook up correctly to the ECU and also that because the ECU came out of a car with a MTX it wouldnt have the shift points programmed into it like one out of an ATX but that if you went the other way around, MTX to ATX it didnt matter because you wouldnt need the shift points anyways. I dunno, Im just going by what people tell me. :banghead:

Shift points are controlled by TCU not ECU. ;)

It is very possible to use a TT harness on a NA car.

Shift points are controlled by TCU not ECU. ;)

It is very possible to use a TT harness on a NA car.

you mean use the NA harness to hook up to the TT engine?? and so do I need a new TCU or what??? OMG
now im getting confused....:runaround:

Yes you can use a NA harness on a TT engine.

check out www.bobthegreat.com he had a full step by step walk through with full pictures on how to do the TT conversion...

one more question how come a female asks on the tt swap and everyone is so quick to help but when a guy ask the first thing people say is "check the faq" just found it kinda funny...hope the website helps

Its the whole "damsel in distress" thing.

check out www.bobthegreat.com (http://www.bobthegreat.com) he had a full step by step walk through with full pictures on how to do the TT conversion...

one more question how come a female asks on the tt swap and everyone is so quick to help but when a guy ask the first thing people say is "check the faq" just found it kinda funny...hope the website helps

i have checked that site. its good if you're doing the conversion when you buy the seperate parts and put em in. but i bought a complete engine. thanks tho.

Its the whole "damsel in distress" thing.

b.s. you know you're a leg humper at heart. :grinyes:

and aerosul, for the record, in my second post i responded to hot3000 "search and read the FAQ". but then i answered her specific questions and elaborated just a little.

b.s. you know you're a leg humper at heart. :grinyes:

and aerosul, for the record, in my second post i responded to hot3000 "search and read the FAQ". but then i answered her specific questions and elaborated just a little.

and it helped a lot!!! thanks ^^^ :p

one more question how come a female asks on the tt swap and everyone is so quick to help but when a guy ask the first thing people say is "check the faq" just found it kinda funny...hope the website helps

actually she caught herself asking a question without reading first
after she read she still had questions
i think that would have been done for male or female

i'm not a leg humper, imma hump sonething worth humping. ;)
i mean seriously other than a dog who the hell wants to hump a leg, that's almost like humping a stippers pole, it doed u no good.
yay u got the engine, and now he's sending u the wiring, wat a gentalman

i'm not a leg humper, imma hump sonething worth humping. ;)
i mean seriously other than a dog who the hell wants to hump a leg, that's almost like humping a stippers pole, it doed u no good.
yay u got the engine, and now he's sending u the wiring, wat a gentalman

Yea havent heard from him yet about when its being shipped or when it was shipped. But hopefully its coming soon. I hope by the end of the week or beginning of nxt week. I just need to get my intercooler and not sure what else but things may be happening sooner than i expected :icon16:

Yes you can use a NA harness on a TT engine.

mk what about the TCU?

also, im getting a feeling im going to have to find someone to do this engine swap for me, my moms being a b*#@& so since her bf is up her ass and does everything she says, he's prolly not going to do the swap for me now. Anyone know of anyone who does this stuff in the VA area? Im in southern VA so if theres someone in the northern part of NC that could work also...thanks :banghead: :banghead:

3SX is just north of Charlotte, NC.

i would peruse the regional sub-forums (regions (http://www.3si.org/forum/forumdisplay.php?f=99), chapters (http://www.3si.org/forum/forumdisplay.php?f=73)) on 3Si to find someone local who could do the swap for you.

ok so now I have a question, what would i have to do to add awd to my 3000GT...i dont figure it would be too hard...and i figure since the all wheel steering doesnt really help that much unless ur parallel parking that i wouldnt have to do that also...which would make for a stronger link from the front to the rear...basically i suppose my question is...what do i need other than the transfer case and drivetrain...and where can i get it?

You have much to learn.

#1 AWS doesnt do anything to help paralell parking. A) it only engages at speeds over 35 mph. B) its same phase meaning the rear tires turn same as the front meaning it wouldnt do dick for helping on paralell parking if it did engage at low speeds.

#2 AWD conversion is FAR from simple. Its not just bolt on. Things need cut, welded, measured, etc etc etc. You essenstially need a TT donor car to do a conversion. And even having that its still not easy.

Look up www.bobthegreat.com. Huge write up. He basically did it to prove it could be done. He has said if he had to do it again, he wouldnt waste his time, money or effort and just bought a RT/TT or VR4 from the start/

ok so now I have a question, what would i have to do to add awd to my 3000GT...i dont figure it would be too hard...and i figure since the all wheel steering doesnt really help that much unless ur parallel parking that i wouldnt have to do that also...which would make for a stronger link from the front to the rear...basically i suppose my question is...what do i need other than the transfer case and drivetrain...and where can i get it?



mk this has to do with my conversion how?? :p Anyways, the update: Engine is still sittin on the pallet under a tarp. Dude never sent me my other stuff, so I gotta buy it all. (see wish list). Being that Im re-enlisting, after I get all my stuff paid off i'll be sending Vector money to get everything done for me while Im gone. It will be so nice to come back home and there my baby is. TT and all. mmmm..I need some alone time just thinking about it... LMFAO j/p :p anyways, quick question too. If I was thinking about possibly doin the ATX to MTX swap.. I know Im goin back and forth, but If im going to have the money why not? so, 5 or 6 spd tranny? and if I decide not to go that route, what things need to be done to beef up the ATX.. Thanks guys

and if I decide not to go that route, what things need to be done to beef up the ATX.. Thanks guys


This is where I come in. One thing that is absolutely necessary is a tranny cooler. Thats all I had on mine for a long time, and I never had any other problems. My time for that is in my sig, of course several years ago (friends BPU RT/TT that night was running an 8.7 @ 82 w/ 1.8 60 ft). Now, I do recommend going ahead and getting a shift kit. If your just planning on running 9b's, i'd say your good to go with those two mods to the tranny.

Other things you can do if you want is the end clutch upgrade (but i wouldn't do it until your current end clutch burns up), high-stall torque converter, and LSD.

This is where I come in. One thing that is absolutely necessary is a tranny cooler. Thats all I had on mine for a long time, and I never had any other problems. My time for that is in my sig, of course several years ago (friends BPU RT/TT that night was running an 8.7 @ 82 w/ 1.8 60 ft). Now, I do recommend going ahead and getting a shift kit. If your just planning on running 9b's, i'd say your good to go with those two mods to the tranny.

Other things you can do if you want is the end clutch upgrade (but i wouldn't do it until your current end clutch burns up), high-stall torque converter, and LSD.

AWESOME!! You're the best thanks :D

any suggestions on a specific brand tranny cooler and shift kit?

Here's a MTX conversion for sale (http://www.3si.org/forum/showthread.php?p=4498697#post4498697), if you're still undecided.

look at the following link for the shift kit and transmission coolers
http://www.importperformancetransmissions.com/mitsubishiauto.shtml#main

you can also buy a B&M transmission cooler from summitracing.com. Long Tru (whats on IPTs site) and B&M seem identical to me. Both should work great, just which ever one you prefer.

Here's a MTX conversion for sale (http://www.3si.org/forum/showthread.php?p=4498697#post4498697), if you're still undecided.

Yea i saw that thanks :D
And thanks Hotshot for the info

So no one ever really answered my question about the TCU compatability. Any insight on that?

So no one ever really answered my question about the TCU compatability. Any insight on that?


What do you want to know about it?

well do i just use my current TCU? or do I need a different one.

well do i just use my current TCU? or do I need a different one.


First of all, there are no different ones. If you want to use your TCU with a TT ECU, then you will have to give up "pulling timing" during a shift.

If you want to use your TCU with a TT ECU, then you will have to give up "pulling timing" during a shift.
which means?? I'll be using a TT ECU with my TCU so....Im cwuewess sowwy

which means?? I'll be using a TT ECU with my TCU so....Im cwuewess sowwy

ok, your N/A ECU allows feedback from your TCU which tells the ECU that when the transmission is about to shift gears, that it pulls ignition timing. This creates smoother shifts, and "supposedly" makes less wear and tear on the tranny due to less stress. The wear and tear part is debatable. I believe that if it does, its not much. No one has broken a tranny yet due to it.

In a TT ECU, there is no input for feedback since all TT's were manual, therefore the timing does not drop for shifts, so your shifts aren't as smooth. Personally, I like the harders shifts because it shifts much quicker.

mk, so that would be part of the reason for me needing to beef up the tranny? But other than that I should be set right?

mk, so that would be part of the reason for me needing to beef up the tranny? But other than that I should be set right?


No, you beef up the tranny because you'll be making more power. The tranny cooler is to obviously keep the tranny fluid cool, because heat is the #1 killer for auto trans. The shift kit is to lessen slippage between gears, aka make your shifts quicker and firmer.

You could use your N/A ECU if you wanted to, you would just need something to compensate for the larger fuel injectors, such as Apexi AFC or Greddy Emanage. However the TT ECU has been dyno proven to give extra hp.

Do all of mankind a favor and do the conversion. An auto tranny in this car will make you look and feel like a poseur. props to girl with fast car and the knowledge and dedication to make it fast. Leg humping complete. Mission accomplished.

Do all of mankind a favor and do the conversion. An auto tranny in this car will make you look and feel like a poseur. props to girl with fast car and the knowledge and dedication to make it fast. Leg humping complete. Mission accomplished.
ROFL! Thanks I guess :lol: I prolly will end up going that route. Since I re-enlisted i wont need my car to get around, so It'll be ok to just sit for awhile until that gets done since I wont be driving it.

No, you beef up the tranny because you'll be making more power. The tranny cooler is to obviously keep the tranny fluid cool, because heat is the #1 killer for auto trans. The shift kit is to lessen slippage between gears, aka make your shifts quicker and firmer.

You could use your N/A ECU if you wanted to, you would just need something to compensate for the larger fuel injectors, such as Apexi AFC or Greddy Emanage. However the TT ECU has been dyno proven to give extra hp.
I already have an APEXI SAFC and a TT ECU but I guess If I just do the ATX -> MTX conversion all of this is irrellevent. Good to have an understanding of it all though anyways. Thanks again.

ROFL! Thanks I guess :lol: I prolly will end up going that route. Since I re-enlisted i wont need my car to get around, so It'll be ok to just sit for awhile until that gets done since I wont be driving it.



The other option is to tint the windows so dark no one can see in, never ever let anyone see inside, and roll backward occasionally at lights. Ricing can be very economical. Don't take what I said about being a poseur too seriously. The fastest WRX in the world has an auto tranny.