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

[rapid36]

So does anyone know if i will need a forged crank for a 300hp build? or is the stock cranks in the 7a's already forged?

And do I need anything else besides the stuff listed above?

Any info will help.

This post has been edited by rapid36: Feb 8, 2013 - 11:05 AM

[Smaay]

stock crank is fine. i dont think the 4A pistons and 7A rods are compatible

[rapid36]

stock crank is fine. i dont think the 4A pistons and 7A rods are compatible

ok thanks! and it should be, i read up a lot on the internet and a ton of people are saying that they are using the 4a pistons with 7a rods, but it wont matter now cause i found 7a forged pistons for a big price but it might be worth it, it comes with some extra goodies as well.

[Smaay]

i still no point in sinking all that money into a 7A

[rapid36]

i still no point in sinking all that money into a 7A

Im very open to opinions! please let me know what you think.

But the reasoning for me putting this much money into a 7a is because instead of going out and spending 5k on a neon srt or something similar, I could have a celica that is just as fast if not faster than a srt. And not to mention the motor and tranny in that car will be rebuilt and will be more reliable than going out and buying another car with quite a bit of miles on it.

[mgnt232]

you can buy a 3s clip for like 3-4k and push quite a bit more than the 7a will even after all the rebuilds.
most 3sgte for sale have like 30k miles (or so they say)

[Smaay]

i still no point in sinking all that money into a 7A

Im very open to opinions! please let me know what you think.

But the reasoning for me putting this much money into a 7a is because instead of going out and spending 5k on a neon srt or something similar, I could have a celica that is just as fast if not faster than a srt. And not to mention the motor and tranny in that car will be rebuilt and will be more reliable than going out and buying another car with quite a bit of miles on it.

there is no logic to this. you are going to sink 5K into an engine that will never perform. Yeah you are building it up so it will be reliable, but you are not going to see the numbers you want.

like i mentioned earlier you can spend 2000 for a V6 swap, or 3500 for a 3S-GTE. and have a reliable engine

[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

[rapid36]

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

Very well said with great explanation, those are comments i like to hear , very informative as well! You are 100% correct, the 3s swap is a much more better build than building the 7a due to the fact of price and power potential. i hate to switch ideas because then its just one big old loop and nothing ever gets done, but maybe building the 5sfe might be a better build for me to do.

[mgnt232]

>click here<
That link is to pressure2 (a moderator here) who did a 5sfte. Very in detail. In his 3sgte swap thread he says the differences in the swaps. I dont have time to find both but im sure you can.
Ive talked to him about it before and he loved both, the 5s being more difficult.
Its just up to you

[rapid36]

>click here<
That link is to pressure2 (a moderator here) who did a 5sfte. Very in detail. In his 3sgte swap thread he says the differences in the swaps. I dont have time to find both but im sure you can.
Ive talked to him about it before and he loved both, the 5s being more difficult.
Its just up to you

Dang Perfect!!!!! Thank you, that is exactly what i need to aid me in my decision! Thank god supra injectors are compatible with both 7a and 5s! I already have the 440cc Supra injectors and AEM piggy back at my house. Luckily those were purchased first and not the forged pistons and rods!!

I will keep everyone updated on my decision and the reasons why im going with a certain build, But for now im going to research like no other and provide everyone with the most accurate information i can!