Building the 7afe to handle boost, Need some assistance Options

[rapid36]

Hey everyone, I own a 94 Celica ST with the 7afe motor in it. I have 4k to throw into this car and want to redo to handle boost and hopefully generate some great hp with it. I have basically every piece of parts i need gathered but still need a little help on some topics. Here are the parts I have so far:

1) 4age forged pistons still keeping it at 9.0:1.
2) forged 7afe H beam rods
3) stock crank
4) Bored out cyclinders
5) t2 turbo kit
6) aem piggy back
7) boost gauge
8) colder spark plugs
9) 440cc injectors
10) 12.1:1 FMU
11) 255 fuel pump
12) wide band o2 sensor and gauge

The thing ive been thinking about is, Do i need a different crank to handle the extra stress that i will be putting on this motor? some people online are saying its forged and the other half are saying its not forged. So does anyone know for sure which one it is??

I have no idea how much power i will be able to generate with this setup but it will be towed to the dyno shop as soon as the build is complete. Of course i wanna make sure everything is able to handle the boost ima be shoving into it. I have no idea on how much boost i will be able to run, hopefully 15psi or more depending on what the dyno people do. I have never turbod a 7afe before only did hyundai tiburons before this, but i did do tons of research on the 7afe, but still have some remaining questions.

Also does anyone know what else will be needed to do to sqeeze the most power out of this motor as i can? without doing a swap of any kind. Also it will be nice to know if anyone has a similar build and see what kind of numbers they are generating.

Thanks.

This post has been edited by rapid36: Feb 5, 2013 - 1:57 PM

[celica74]

If your looking to get 300hp out of a 7a your looking at NEEDING forged rods, forged pistons, id go ahead and do a complete rebuild, a clutch that can handle 300 and hope your axles and trans still have life left in them, some porting work, probly going to have to do some oversized valves, cam grind, atleast a gt25 turbo, 550cc injectors, 255 fuel pump, and something to tune. If you add all this up, your looking around 6k. 3s can be in your driveway and have a new tb, wp, and bearings and in your car for this cost. Just saying not impossible, just saying 300hp on a 7a block and head hasnt really been done before. 400hp has been done on a 7a block and trans but with the help of a 4a 20v head, a expensive turbo and a hell of a tune.

[rapid36]

If your looking to get 300hp out of a 7a your looking at NEEDING forged rods, forged pistons, id go ahead and do a complete rebuild, a clutch that can handle 300 and hope your axles and trans still have life left in them, some porting work, probly going to have to do some oversized valves, cam grind, atleast a gt25 turbo, 550cc injectors, 255 fuel pump, and something to tune. If you add all this up, your looking around 6k. 3s can be in your driveway and have a new tb, wp, and bearings and in your car for this cost. Just saying not impossible, just saying 300hp on a 7a block and head hasnt really been done before. 400hp has been done on a 7a block and trans but with the help of a 4a 20v head, a expensive turbo and a hell of a tune.

guys lol please read the first post, then you would already know whats going on, yes i do realize i need a lot of stuff but if you read the first post you will understand what im going for. Dont see why everyone is saying its impossible or near impossible to get 300hp out of a 7a, a fully built motor and tranny and a great tune should easily handle 250hp-300hp.

And for the people saying to do the swap, Im very skeptical about it due to the fact that the labor is going to be very massive, not to mention having a clip sent over seas i would imagine be very expensive. Plus i would have to rebuild the motor that came in the clip. which again will add up well over my budget.

[mgnt232]

I think everyone gets it what your going for. And if its what you really want, go for it.
Just as you mentioned the labor (especially if you dont do it all your self) is going to take forever (but a 3s would be faster to swap) and the 7a will be very expensive, tedious, special ordered, ect.
A base 3s can push what your looking for. As far as you said you need to rebuild it? Just replace normal wear and tear items (timing belt, oil pump, ect.) And you wouldnt import it your self, there are plenty of third party companies that bring them in all the time.
After the mounts/shift linkage/trans/clutch/motor/harness conv./maintenance parts/ect I personally have spent like 5k (maybe a little more) But will be well over 300whp with only room for improvement. As with your plan I imagine would be the top of the line items already in, and ridiculously expensive to go bigger and better.
But again if your set on boost for the 7a, go for it. Prove us all wrong and keep us up to date