stroker vs. boring

[racer009]

It's been a while since i have last posted on here, and going through the posts, no one really has asked this. I am going to build my eclipse gsx up and make it a complete track car. what would be the best thing to do go get the best mid to top end out of it. I've talked to people and they say if you stroke a motor it wont rev up as high. This is coming from someone who deals with n/t engines, does turbo change that. I'm not wanting to do a 100mm stroke seeing that theres a lot more turbo lag with the 2.3l strokers. i was thinking about getting the 94mm crank and just doing a .20 over pistons, or just keeping it at a 88mm stroke and going .60 over on the bore. what would be the best combination, i already have the bc 280 cams and valve springs and full 3 in. exhaust. I'm going to wait on finding out what bottom end I'll go with until i buy the turbo and all the other nessesities. any ideas?

 

[racer009]

Another thing I have been thinking about was what bearings to get. I've seen the tri-metal bearings, i just dont know too much about them and how well they would handle the endured stress from the crank. Would they be good for a track car that is going to see longer than 10 seconds of high rpm?

 

[ed1380]

Trimetal bearings are good for race only application. While aluminum will be more forgiving to the crank should there be any metal shavings.

 

[racer009]

Trimetal bearings are good for race only application. While aluminum will be more forgiving to the crank should there be any metal shavings.

thank you thats good to know.

 

[ed1380]

Here's the long version. Much more information

Tri-metal bearings vs. aluminum? - 3000GT/Stealth International Message Center

 

[Alex7747]

Trimetal bearings are good for race only application. While aluminum will be more forgiving to the crank should there be any metal shavings.

Sorry, but i think you got it backwards. Tri-metals have a softer metal in the first two layers and then the cooper. The first Two layers are designed to embed debris. then the cooper lay is a sort of fail-safe. The aluminums are solid aluminum which is a hard metal and will not be forgiving to debris like the Tri-metals.

 

[racer009]

I guess I'll have to do a bit more research myself and see what would be best for my application.

 

[racer009]

So little by little I am buying parts for my car. I finally settled and bought ACL tri-metal bearings. Just waiting for a letter back from a parts dealer to order my crank, rods, and pistons. This is going to be a great build when I get back home.