Hey all....Im new to this forum. I currently own 2 mk3 supras. One is an 86, na, 5 speed, And the other is an 88 turbo automatic. The na is being sold very soon. And the turbo...I plan to sell(worth about 4500 currently) and buy an 89-92 rx7 turbo (whatever the 200hp one is) or attempting to trade for the mentioned rx7. But what i want to know is just some general things. How is parts support for the 2nd gen rx7? Ive seen many parts for the turbo and intake manifolds and stuff, But does anyone build performance transmissions or anything like that? the supra is a very popular and easy to modify car, so i may be spolied. Ive always been a big fans of rx7s and rotary engines in general...and i think its time i joined the club. So hey all and thanks in advance for any replies...Also if anyone is interested in trading a clean rx7 turbo II or any turbo model for a clean turbo supra with about 350 crank hp and a blacked out and restored interior(new carpet, Reupholstered seats...etc)...let me know. Its still a project in the works, But it will be done soon and i will have my fun with it.

 

Welcome

Parts support wont be as good for a rx7 as it is for the supra...

 

Parts support is great for the rx-7. And it is known to produce a lot more power with a fairly small investment in parts...bolt ons are very effective...

 

Hahaha, parts support....


it's not called parts support, it's called parts cars...

 

For turbos at least.
I don't know of any performance transmissions, but there really isnt a need for one. There are people with close to 500 at the wheels on the stock TII tranny. If you want diferent gears, there are a number of diff final drives available. All in all, the aftermarket support is quite good, but maybe not as good as your supra. They key to modding a rotary is to make sure you have enough fuel. Fuel mods before power mods.

 

so far the best transmission upgrade is to swap with miata gears. other than that I don't think there's any "bolt ons".

 

Sure, swap in those Miata internals. I mean, who cares if they explode from the power of a TII. It'll be a learning project?

Anywho, with the money is looks like you'll have, you shouldn't have a problem building a nice, fast, sexy rexy.

 

Im gona save about 6k for this car including the sale of the turbo supra, And yes, Id def be getting a turbo. It has to be a turbo, Has to have the sunroof, and preferrably the 200hp one of the 180 hp one. My na supra came stock with 205, And turbo with 240/255 ft lbs of torque, So i have a few mods to do to get it that fast. I raced a beat turbo rx7 wthat was smoking pretty bad in my n/a, So it will have to at least beat that. But dont worry im getting out of the toyota market so dont considre me a "loyalist". I liek cars for being what they are. lol. And rotary engines are just cool.

 

Thought that was an upgrade?? or is that just for N/A's?

 

Stock parts may come easily, but when you start looking for that power, it's going to cost you.

 

For N/A's, I wouldn't call it an upgrade so much as a change. The gearing is a bit different so it's a new shifting pattern/zone/whatever you call it.

For TII's, from my understanding, the gears can't handle the power.

 

The 89-91 200hp ones have a higher compression ratio and a better turbo than the 86-88 186hp ones, but that's not all you need to consider. I have a nonturbo 89 Mk III and FCs are not like with Mk IIIs where the 89-92s are considered superior in almost every respect.

Parts are a lot easier to find for an s4 (86-88) Turbo 2 than an s5 89-91 turbo. You can swap in an 89+ turbo or use 89 engine internals if/when you get your motor rebuilt. 88s have more reliable oil metering pumps (which inject oil as part of the combustion process). 89s look better to most people, including me, but they are just so rare. I know a LOT more guys locally with 3rd gen cars than 89+ turbos. 89s have a nicer interior overall than the 86-88s. They are also 150lbs heavier than the 88s... they are straight porkers at 3000lbs, which is a lot for an rx-7. This may not seem like much to someone who owned an automatic Mk III turbo, but it works out that an 87-88 T2 and 89+ T2 are about just as fast due to the weight.

The 87-88 turbos also have a little better aftermarket, as you can get the Rtek 2.0 chip which allows control of fuel and spark with a palm pilot, while the 89+ do not yet have those available. The ECU in the 89s have a better overall design, but once again parts are trickier to find for an s5 car.

In conclusion, find a CLEAN, WELL MAINTAINED car. You are more likely to find a really good condition one at that budget level if you get an 87-88 turbo, but if you get an 89-91 you will have a more rare vehicle. Performance wise there aren't that many differences actually, especially when you mod them.

 

Then why do some fd guys switch to tii trany's when they get in the high hp range.Im glad to hear that your going from supra's to rx7's. Im proud of you. lol Sell those fat slugs. Welcome to the rx7 relm.

 

the FC aftermarket is superior to the MKIII aftermarket. the 7m gets no love and 1jz is almost as bad.

 

He was saying that the miata gears cant handle the TII's power.

 

Reading comprehension ftw.

 

AFAIK the FD and FC Turbo trannies are almost identical save for more\better syncro's ( ) in the FD version for smoother shifting.

Maybe they swap to TII trannies because it's a cheaper alternative to buying another FD tranny.

 

cant handle the power but at an NA level there are perferable. but why trade a car capable of 8900 hp to a simple rotary i told you guys, we are slowly winning them over but no, im sorry. i love the supra, but honestly, why would you want a piston motor. the rings go bad, the valves start tapping, the head needs to be blue printed, come on, the rx7 has in basic only 3 moving parts, what else can you ask for other than horsepower, and the turbo has it. who around here wants to be a corvette killer? all of use, and with a turbo rx7 you can be, and much more, all it takes is time, patience, the ability to understand, the wisdom to learn things your dad taught you were not possible, and more money than i have, and you can have the meanest 7 on the streets.

 

the S5 turbos seem to be easy to get power out of. alot of people are hitting 400hp with some easy bolt on mods like turbos, FMIC, intakes and exhausts and Stand alones. also the FC weighs alot less than the mkIII so that's always a plus side. good luck with your venture into the world of rotary.

 

and s4's arent?

Turbos are hardly what I would call a "bolt on." To fit a bigger turbo you need a new manifold, BOV, wastegate, intercooler with plumbing, injectors, fuel pump and fuel control.

 

They had turbo auto for A70's? What about auto TurboII's?

 

no such thing man (that i know of)

 

If you really need to handle more torque output beyond what the TII tranny can handle ( which is alot i might add) You can go with one of the ford truck trannys. F150 i believe it is will bolt up without moding it.

 

miata gearing is too short for my taste.... heck highway cruising would just get a lot worse

with a lightened flywheel the acceleration is a lot better

 

Thanks for all the helpful replies. Yes, The Mk3s are fat. But its well used fat. The car is very very stiff and stable compared to a lot of cars. It feels awesome and totally safe going 100+ down the highway. And i love the motor because its incredibly strong and can take a lot of power before you even need to change anything. But I do want a rotary. And from what i just read, the 86-88 has a better aftermarket, But the 89+ has a better turbo and isnt as common. I guess the 86-88 motor would be better to run higher boost beacuse of the lower compression. What are the stock compression ratios of the different motors? and are all of these 13bs? That and 20b are pretty much the only names ive ever heard, But i thought the 20b was 3 rotors. I have a lot to learn with rotary engines i guess. I always read about altering ports and stuff. None of this on a piston motor aside from polishing. But i guess the ports are the same as the ports/valves/cam in a piston motor. And arghx, in yoyur long post, When you say 89 is it the same as 89+ everytime you said it or is the 89 specifically different? And from experience from someone, How do these rx7s handle? My supras handle excelent, But im guessing the rx would too because its of similar design and weight balance, and is a bit lighter. And also what is the weight of the various models? I would like the lighter one i guess. Weight is bad!