7m-ge exhaust
- Thread starter suprakid3
- Start date
not alot...
maybe what, 7 horsepower..?
make sure the engine is well maintained and get a tune up and you'll probably see more gains and responsiveness from that than anything else..
if you're looking into alot more power, then swap in a 7MGTE, take it from me, I did it to my 89 NA and I'm going to do it to my girl's 86.5 too (eventually)..
maybe what, 7 horsepower..?
make sure the engine is well maintained and get a tune up and you'll probably see more gains and responsiveness from that than anything else..
if you're looking into alot more power, then swap in a 7MGTE, take it from me, I did it to my 89 NA and I'm going to do it to my girl's 86.5 too (eventually)..
You probably won't feel much of a gain. Just noise. I went though a bunch when I was NA so I somewhat know what I am talking about 
See i dont get some of the replies on here. On one hand the Stickies tell you to free up exhaust seeing as we have crappy crush bent pipes. Varying inner diameter and what not. and on the other hand everyone is about the 7MGTE swap. Yes i get it that turbo will get you more power. I wish i could have a turbo. But sometimes you cant afford all the parts. Now from what ive read on supra mania. I think a good exhaust mandrel bent 2.5 inch diameter all out and a good intake will get you a good amount of hp. Now it is absolutely important to maintain a good tune. but i disagree that "7hp" is what ure gonna get. I apologize if i sound assholic but sometimes i get annoyed at the whole OHHHH TURBOO ONLYYY replies.
enawazh;1229161 said:
If you research more, you'll see that any N/A guys don't even have 250rwhp. There just isn't much you can do the the GE to make good power unless you spend a crap ton of money. That's the reason everybody says to go turbo. Once the swap is complete and maintained, you can make really good numbers (300+rwhp/rwtq) with just a few carefully chosen modifications.
The 7MGTE responds to modifications extremely well if taken care of. That, and the extra torque is incredible, even in stock form.
(189 N/A tq VS 254 Turbo tq in stock form)Take everyone's post for what it's worth, as there's a reason they're saying it. I started out N/A, too. And I can honestly say, I'll never own a 7MGE again unless I plan to N/A->T it. It's just not enough motor for these cars. (My opinion, of course)
visually, 7MGE headers look identical to 5m headers. Raptor racing produces a 5mge header that nets a 10whp gain. Unfortunately I don't think it will fit a mk3 at all, or at least the "midpipe" section won't. Regardless, it gives a hint that at least a measurable gain is found with a header upgrade. Here:
http://forums.celicasupra.com/showthread.php?t=25872&highlight=raptor+racing+header
the rest of the posts are mostly correct, including shaeff's. But for a discussion regardarding if you should spend any money at all, see the recent thread here:
http://www.supramania.com/forums/showthread.php?t=86555
http://forums.celicasupra.com/showthread.php?t=25872&highlight=raptor+racing+header
the rest of the posts are mostly correct, including shaeff's. But for a discussion regardarding if you should spend any money at all, see the recent thread here:
http://www.supramania.com/forums/showthread.php?t=86555
I respect everyone's opinion. Im not trying to attack anyone. I fully understand how much a turbo engine can transform the car. The point im trying to make is that everyone who owns a supra knows that this car was meant to be turbo. Now not everyone is fortunate enough to have a turbo. ppl come on to ask questions about their NA cars and they dont wanna be told go get a turbo as an answer to every question. I dunno i just get annoyed when the answer to everythin is go turbo.
Everyone is trying to save you the annoyance of little to no gain for your money spent! Seriously, you throw an exhaust, intake, and a MBC on a turbo car, push it to 11-12psi (depending on atmospheric pressure, of course), and you're making roundabout another 50bhp! It's that easy. (now, if you wanted to go higher, you'd need some supporting mods. And I don't recommend trusting the stock fuel pump, either...)
id say about 10 hp gain on a stock engine is cap out for exhaust only because the motor dosnt realy need it untill its modified my point is while in stock form it wolnt net mutch but a heavily moded 7mge with cams and head work ..... will gain much more power from the exhaust its all about cfm and pressure if the 7mge head only flows just under 200 cfm it wolnt need a large exhaust may even loose tq but if you plan on many more mods in the future then its well worth it good luck
enawazh;1229204 said:
Precisely.
I'm still debating on my N/A motor. After owning a turbo supra, the difference is night and day, even in stock form comparing a beat-up turbo and a pristine N/A.
All this being said, CRE has one hell of an N/A. He simply walks away from my car. He has a well maintained, stock motor with a 2.5 exhaust, MAFTPro, wideband, and some great tuning. He might stand a chance against a beat up turbo, but not a healthy stock turbo.
For me to do what he has done would cost me more than I'm willing to spend on the N/A motor when I could have a turbo swap for 2000.
If you think more gains are possible from the N/A motor, please prove us wrong with a dyno sheet.
Fuzz420
Are U Here 2 take My Baby
Shaeff speaks the truth. I saved up for many years to do the gte swap.Only thing i can say now is i wish i could have done it sooner.
Back on topic:
I had 3aracing muffler.It was ok enough to get the job done. It gave my n/a "raspy" sound but it did sound aggressive when rowing through the gears. I simply took my muffler down to a trusted local exhaust shop and they got me together with 2.5" mandral bent pipe from the cat-back. I definitely did feel an improvement wasnt anything major but it did put a smile on my face back thenMy suggest is would be to by a higher quality muffler the 3aracing will work but i did get annoyed seeing every tom dick and harry with my same muffler from autozone, but my car always sounded better
Back on topic:
I had 3aracing muffler.It was ok enough to get the job done. It gave my n/a "raspy" sound but it did sound aggressive when rowing through the gears. I simply took my muffler down to a trusted local exhaust shop and they got me together with 2.5" mandral bent pipe from the cat-back. I definitely did feel an improvement wasnt anything major but it did put a smile on my face back then
My suggest is would be to by a higher quality muffler the 3aracing will work but i did get annoyed seeing every tom dick and harry with my same muffler from autozone, but my car always sounded better
My 89 was N/A for almost 3 years, and the blue one still is, I SPEAK FROM EXPERIENCE both past and current. For about 2 or 3 grand you can have a healthy reliable 7mgte bpu cranking out 300hp that's 50% more RELIABLE power...
I have a 2.5" catback that i made on my na right now, and its just not that great. The extra noise gets annoying after a while. Once you realize how much noise you are making and how little hp you are making, its embarrassing. Im perfectly fine with an NA, just leave it stock. Just my opinion.
And i want a turbo motor too. I just don't have the money right now.I may get another GE just to do the HG on and I can just swap motors instead of having it off the road for too long.
Unless the exhaust is rusting off, leave it alone.
2.5" is too small for a turbo car, and it won't get you enough gain. All it's gonna do is be loud and attract attention.
If you're looking to swap eventually, do mods that translate over. Suspension, wheels, ect...
2.5" is too small for a turbo car, and it won't get you enough gain. All it's gonna do is be loud and attract attention.
If you're looking to swap eventually, do mods that translate over. Suspension, wheels, ect...
Everything that these guys are saying about going turbo is true! most of us know from experience, as many of us have started N/A...i know i did!
But i get it!... sometimes the funds are not there.
Gains on an N/A depends on how healthy your motor is!!!When i was N/A i had a real healthy motor with a rebuild head & mgh, cold air intake, headers, 2.5 exhaust, light wheight flywheel, performance clutch, aluminum driveshaft, lsd and leight wheels and my supra was pretty peppy (for an N/A) was able to hang/sleightly beat stock turbo supra.
This is were the healty motor part comes in, my friend had the same car as me exact same mods and i would always walk him.
so it just depends how healthy your motor is.
But in the long run, save you money and eighter swap a turbo motor or buy a turbo car.
But i get it!... sometimes the funds are not there.
Gains on an N/A depends on how healthy your motor is!!!When i was N/A i had a real healthy motor with a rebuild head & mgh, cold air intake, headers, 2.5 exhaust, light wheight flywheel, performance clutch, aluminum driveshaft, lsd and leight wheels and my supra was pretty peppy (for an N/A) was able to hang/sleightly beat stock turbo supra.
This is were the healty motor part comes in, my friend had the same car as me exact same mods and i would always walk him.
so it just depends how healthy your motor is.
But in the long run, save you money and eighter swap a turbo motor or buy a turbo car.
Last edited:
wow... ok I plan on the 7MGTE swap as well. but was kind of hoping to at least see some advice on cheap or free mods to kind of hold you over while you are doing the turbo swap. We all know its the best route to go. But sometimes you just want that lil extra to hold you over while you wait to go turbo. Thats the route im doing right now. Unfortantely the car im starting with already has a 2.5" mandrel exhaust and an HKS dragger style muffler. Im sure I will want to rip it off for a nice stock turbo catback or something... But not everyone has 500-600 to drop on a high mileage running stock turbo motor or 1500-2000 to drop on a healthy motor with harness ecu and maf...
Fuzz420
Are U Here 2 take My Baby
CordiaDOHC;1250517 said:
Theres really not much you can do if your really planning on going turbo but only want a "lil extra" power for now. You have a 2.5" exhaust, you can do an intake. Now your out of "cheap/free" power mods, everything else is going to cost some $$$ whether it be nitrous,light weight flywheel,driveshaft,tuning,ect. If your still wanting to upgrade make sure the mods you pick can be carried over to the turbo swap or its money that could have been better spent else where.
If you're already w58 and you plan to stick with it after the swap like myself, then you can go for a CF/steel/aluminum drive shaft, lightened flywheel, and upgrade the clutch so you can get used to it. Then once you drop in your 7MGTE, you'll already be faster than stock folks..