Delta_Phoenix

#1

I'm wanting to eventually do a turbo project on my ST. The only thing is, my engine has about 136k miles on it right now and I won't have the money to do this for quite awhile. I was wondering if you guys think it would be worth it to turbo my engine w/ this much mileage.

I'm also planning to rebuild beforehand.

5sfeTurbo

#2

I would say no, reason being your engine is "over the hill". It will wear alot quicker throwing on some forced induction.
But if you can rebuild the motor to take a beating then yea that'l work.
Then again the best part of having a car is to push the limit, do what you think(within reason) is worth it.


This post has been edited by 5sfeTurbo: Oct 7, 2003 - 3:04 AM

Delta_Phoenix

#3

During the rebuild, should I have the engine bored a little to gain some more power? I know the block will hold up to anything, but like I said, all internals will need to be replaced with better parts. That needs to happen anyway.

I'm tired of only being able to beat Saturns and the occasional stock Civic.

5sfeTurbo

#4

-Delta_Phoenix+Oct 7, 2003 - 1:06 AM

Delta_Phoenix

#5

So in other words, don't plan on pushing 20psi out of the 7A? >>

I was hoping after rebuilding and whatnot, to hit AT LEAST 12psi. But I dunno.

BTW, how much does a P&P go for nowadays?

5sfeTurbo

#6

hmmmm....ballpark..maybee $700+.

macavely

#7

i say do it.... F everyone that say don't... if you are will to try it and spend the money to do it.. do it.... and if your going to rebuild the engine go for it.... and just know that you not going to be the only one that will turbo your st.... i'll be doing that in a few...

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[TeamNJCT

Delta_Phoenix

#8

-5sfeTurbo+Oct 7, 2003 - 3:31 AM

Delta_Phoenix

#9

-macavely+Oct 7, 2003 - 3:41 AM

Mynzeyes

#10

dude. mike. you know i'm down for a rebuild and 7AFTE. just lemme know when and where, and i'll be there to help you slap that thing together. also, we can talk to my cousin and see about porting/polishing for free, he'll just teach us how to do it on your motor. >>. and, if that's not an option, i have a friend that will do it for NO WHERE NEAR 700...

-John-

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AIM==Mynzeyes

97sccelica

#11

before anything go and get a compression/leak down test.

that willt ell you how healthy your engine is.

if it burns oil, dont try to turbo it.

as for the rebuild. for it to be worth it you would need to change for lower compression pistons and forged rods would be nice.

a stock 7afe in good condition can take 10psi intercooled with out problems. so if you make it a fresh engine with better internals, 12psi is very possible.

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1994 Celica GT4 WRC Edition@gt4.wrc on Instagram

Delta_Phoenix

#12

because John is the bling bling king >>

i know for a fact my engine burns the **** out of synthetic oil, but that's because of the mileage. i'm running GTX high mileage right now, but i haven't checked my oil since i put that in.

Inferno

#13

I can't wait to read about the process that you go through. Good luck! I say go for it!

5sfeTurbo

#14

I know a couple people on the board t-charged the 7afe( cant recall who), just grab one of the and find out their application.

FallenHero

#15

Re-build it with pistons and rods from a 4agze, and install a metal head gasket with HKS rings. That'll get you boost ready in no time at all. I wonder if the Gze crank will fit our cars....

Jon

Delta_Phoenix

#16

I was going to bore the cylinders about .02 if possible just to get them nice and smoothe. Would this have any effect on the bore of the pistons from the 4a-gze? If so, where could I find custom pistons to fit?

Sorry, I'm not the expert on engine internals. Especially when it comes to finding out what's going to fit and what's not going to fit.

Delta_Phoenix

#17

Another thing. How much can the 7a-fe tranny take before having to be replaced or modified to support the extra torque?

97sccelica

#18

-Delta_Phoenix+Oct 7, 2003 - 9:04 PM

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1994 Celica GT4 WRC Edition@gt4.wrc on Instagram

FallenHero

#19

lol, I had no clue they used metal head gaskets... Are you 100% sure? If I only had money.... somebody needs to get on E-bay. There are two sets of 4agze pistons and rods up for under $200!

Jon

97sccelica

#20

-FallenHero+Oct 7, 2003 - 10:01 PM

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1994 Celica GT4 WRC Edition@gt4.wrc on Instagram

Delta_Phoenix

#21

-FallenHero+Oct 8, 2003 - 1:01 AM

Delta_Phoenix

#22

nevermind, i found them.

BTW, don't you guys even think about getting them before i do >>

still need to know if these are going to work if i bore the cylinders in my 7a

FallenHero

#23

No. they wont. There is no need to bore your cylinders. Most people just like the way that sounds. You don't need to weaken your engine any more than it is, especially if you are going to boost.

Jon

Delta_Phoenix

#24

what's a reasonable price for those rods & pistons? the guy said he'd hold them for me if no one bid on them.

zipstrips

#25

-FallenHero+Oct 8, 2003 - 11:08 AM