Please Help
 

I have a 2003 Tiburon GT V6 and want to get a 3rd Gen. RX-7 T.T., but i heard in a magizine (Super Steet or Sport Compact) that the 3rd Generation RX-7's motors tend to screw up, and i quote "After a couple of thousand miles, the check engine light comes on and that usually means you need a new engine." is this tru? Im gettin rid of my Tib so i can have a bad ass ride. Is there n e limitations to the Motor of the RX-7's? The Tib's limit is 250 hp and thats the main reason y i want an RX-7. Thanx

If you run the engine without oil thats is completely true...but all engines do that. And super street is not always right when it comes to rotaries, hell they are never right. They deal with honduhs and tiburons like the crapheap you got. Try to take care of the engine like you would any engine and youll be fine. The best thing to do is get a turbo timer for it. It would be the best 200 maybe dollars you ever spent and you wont have any problems unless you dont keep up with maintenance. First off, you have to find a car that has not been overheated, wich is hard to know with a rotary so make shure he/she has all the maintenance records..if your gonna spend over 10g's on a car you might as well have one that has been taken care of. Try not to turn up boost either. In the 90's people would be the fucking car and slap on adjustable wastegates so they can turn the boost really high....keep it stock if you want it reliable. If you do any mods, go for reliabilty if you want the car to last, bigger intercooler, bigger radiator...
Well, hopefully the 3rd gen guys can help you with the more advanced stuff, lata.

Thanx for the info, another thing i want to know is if i want my 3rd Gen. RX-7 to have 400+, what all do i need, im talkin about makin my car fast as hell.

Okay...400+ I would say a single turbo...bigger intercooler...street port...exhaust...you should be well over that...

This is not my forté, you may not need a single turbo conversion...

why a single turbo & not a Twin? i would think that i'd get more outta the twin turbo. damn im so confused now hehe.

Read the other posts. There is one just below here called something like "I just dynoed my 7". While his mods aren't the most reliable it is a good start.

I'm not going to call myself an expert by any means, but in order to get that kind of HP your going to need:

Bigger Intercooler
Bigger Intake
Free flow exhaust (DP MP CB)
Bigger Rad
Bigger Injectors
New ECU
Fuel Pump
Upgraded Ignition (;))
All of the Reliability Mods
and good tuning.

The twin turbo is sequential on a 3rd gen meaning you have a small turbo down low that spools up quickly so you have more torque...the sequential system than switches over to the other turbo, a larger one for the high end...but using the stock turbos only gives you 15psi at the most I've heard...so for more boost you could get a single turbo that pushes more air...

damn search function
 

I wish that the search function was back on ... there is so much info on this forum.

Anyway ...

I've read that the stocks can't put out more than about 360HP and about 15PSI boost … single the sky is the limit for both numbers.

The main advantage to the twin sequential setup is that you're at full boost by about 2500 RPMs. With a single setup, I've read that it's about 3500. I should also say that the 2500RPMs is on a close to stock car. I.E. one that could be a daily driver. I.E. not noisy, passes smog, etc. The single setup would have to have a very open exhaust, forget smog, etc.

Oh, the single stuff above is from my reading not experience ... search the forum once the search function is back on.

The turbo on my merkur is at full boost at about 2500rpm...so i guess its all in turbo sizing..my car afterall has exhaust so that could kindof explain it.... The more money you spend means either the faster your turbo will spool or will determine the size.
If you want to do a twin turbo setup i think that would be overkill...and a recipe in blwing up your engine..detonation is a bad thing...

It's a good Idea to talk to a shop or something that is used to dealing with rotaries and tell them your plans. Keep an open mind what they have to say, because its whats best for your engine.

Ciao.

I'm fairly sure that the stock twin setup uses identical turbos. The extra air comes from both turbos being merged together past 4500 RPMs in the 3rd gen Rx7.

Have a look at this post. At the very least the dimentions are the same on the outside.

I wouldn't be doubting myself, but with your 1000 + posts ... :cool:

He's Canadian and he drives a first gen. Don't worry about him ;)

:edit: and hes going to be pissed when he finds out I was right about the same sized turbos (crossing fingers).

Canucklehead (Avatar caption)
 

That explains the caption below his Avatar.

:hahaha:

See, i was thinkin about buying this RX-7 T.T. and upgrade the Turbos to Greddy T-88's. That wouldn't be the first thing i would've done but i would've done it eventually. so a single turbo upgrade would still be better then a twin T-88 setup?

twin t-88s
 

Hmm ... this is going outside my relm of knowledge.

If you want huge horsepower and don't care about turbo lag and streetability a huge single turbo is the way for you. The single turbo will also simplify the boost setup a lot.

well can you give me the con's of a Twin Turbo setup

Seems like you guys are getting frustrated with this post, so basically lemme ask one more question, Which would be best overall Twin Turbo or Single Turbo? Which would give me a better 0-60 tim? And which one would last longer & blow up my engine?:scratch:

TWIN T-88 TURBO's, YOU ARE MAD!!!! Carlos Ganzales is running a single T-88 turbo and he's in the 8's (in his 13b-rew RX-3 anyway, im not sure how is doing in his 2nd gen)...Nitrous Oxide and Methenol help cool his engine...i doubt you'll be running methenol, lol.

Try one T-88 turbo is you want gobs of power...I would advise against two of them. If you want 400hp a T88 will no doubt get you far and beyond the realm of 400hp and not too mention the humongous turbo lag!!!!!!!! It's a good way of spending 4G's...and I wont even get into piping, incoolers, ignition, porting, lightened rotors, lightened flywheel, bigger injectors, fuel pump, ect ect

I have no idea, lol.

yzf needs to ask God for the search function to be turned back on :D

j/k!

A twin T88 is short of impossible for any street FD. A single T88 is essentially non-streetable already (most of the few people that have it for street use NOS to prespool as that lag is BAD), you'll never have enough exhaust energy to drive two.

Before you continue with your quest for mad hp, you need to let us know exactly what you will be using hte car for, and what you expect out of it (besides lots of hp).

I can tell you right now, a high hp FD and daily driver do not belong in the same sentence (unless you're refering to two different vehicles hehe). When you get into the world of hi-perf cars, you're going to make compromises in day to day driveability of the car.

Also - what kind of driving experience do you have? This is now a legitimate question, as that we have had a couple deaths and a number of accidents within the last couple months alone - and this is just within this small community. No doubt what we've seen here is just a small percentage of the number of accidents/deaths related to FDs that we don't hear about.

Best of luck.:)

search function
 

:drool: search function :drool:

Finally...someone who knows his shit!!!

ok, the RX-7 im thinkin about gettin is gonna be my daily driving car, i jus want to make sure i beat n e one out there with the most amount of hp. and acceleration. whats the biggest twin turbo i can get? i want a twin turbo bcuz of the way it works and most of all, it sounds nice just sayin that i have a T.T. =) i want the most amount of hp and torque outta my rx-7, i really dont want nos, but i'll have canisters for show. so what do all of u think.