What exactly is that? And how can you "shave" the trim? Thx.

 

bump

 

 

no one knows?? wow

 

 

ok i know to calculate it you go...

[(minor wheel diameter)^2 / (major wheel diameter)^2] * 100= trim

ex. 57trim...2.230" minor diam, 2.950" major dia.
(2.230)^2 / (2.950)^2 * 100= trim
4.9729 / 8.7025 * 100= 57.14334 or 57 trim


what i want to know is what you use these numbers for, what they mean, etc. can anyone explain it???

 

i'll use turbonetics turbos for example..

http://www.turboneticsinc.com/catalog/comp_wheels.html - you got compressor housings.. each trim has different housing/wheel size

then you got turbine housings http://www.turboneticsinc.com/catalog/thousing.html, you could get 3 different wheels for each housing - http://www.turboneticsinc.com/catalog/twheel.html

other brands offer similar sizes or more trims in betweens.

 

https://honda-tech.com/zerothread?id=153810 - some good information there.. theres more information on how to calculate compressor size in archives.

 

thank you for taking the time to explain vtec.dc2.