Advice for my 7AFE 97? Options

[powerkor]

I have a 97 ST Celica, which has the 1.8 7AFE engine.

I'm looking for advice from person(s) who have attempted to nos their 7AFE. I know I must upgrade my exhaust and intake as a bare minimum, but I want to go a step further in strengthening this weak block. I'm looking to replace the pistons and rings with better ones and maybe the header as well. I've read multiple articles on the 7A-GE conversion for the header, and I have mixed feelings about it.

If anyone has personally tried to replace pistons, rods, rings, and/or the header let me know and give me your advice.

I want to be able to shoot more than a 50 shot, hence the replacement of the mentioned parts.

My last question is, if I replace my pistons, do I want a higher cr or a lower cr for NOS? I know for turbos, the lower you go, the better due to the characteristics of the turbo... however, I'm not too fimilar with NOS and what conditions are optimum for it.

If anyone can help me out, I'd really appreciate it. Oh, and NO, im not swapping engines, so don't bother telling me to do so. The 7AFE is fine for what I want to do.

Experienced Advice only please.

[Digndoug]

I would say look around on sites.. and read as much as you can, and learn everything about it before you start, Personally I hate it, but i also have never used it. Iv spoken to a few people that have used it, and loved it.. Ther swear by it, also honda owners, but same dif. heres somthing that might help answer some questions... nos info

[powerkor]

if anyone has experience with nos or you know someone who does, plz refer them here. thx for your advice, i've been reading around, and that link was most helpful

[tigernate29]

I used nos on my car for a few months and loved it. I have a 94 st with about 120k miles on it. It has the 1.8L 7a-fe also. Talk about a kick in the butt. That stuff will set you back in your seat. I used the nos many times, with no problems on stock 7a-fe internals. I used short ram intake, upgraded spark plugs, and a junky muffler. I took the kit off to try the 7a-fte. Laugh if you want, but I wanted to be unique, and there are only a couple of people who have tried to turbo there 7a-fe's. Anyway, nos is awesome for the 7a-fe.

p.s. I still have my kit if you are looking for one. If you're interested, E-mail me
natv83@aol.com

[powerkor]

Again, sorry for bumping my post... I'd like some more feedback from people who have used > 50 shot (75 or 100 on the 7AFE), and tell me what they suggest... I'm 90% sure im gonna get forged pistons, so if it works with stock internals, I know Ill be set with the setup im thinking of

This post has been edited by powerkor: May 12, 2004 - 1:20 AM

[macavely]

well i never changed piston or rods on any celica engine before(did 2 mr2 3sgte does that count).. but i have done it on a few other cars 2 of which did spry... you don't need lower compression pistons.. since your not going to turbo.. you could go a bit higher that would give you more N/A power if someother things are changed and tuned along with it.. but do get forged pistons and rods.. the stroger the internals the longer they will last..

[powerkor]

I was thinkin' about getting a better head gasket too, they make diff. types of metal for them, better than stock. If you have some input let me know about it.

[S_C_M]