Supra Forums banner
1 - 1 of 1 Posts

205 Posts
Discussion Starter · #1 ·
What do You think of boring 40 over?? I have aleady gone 20 to clean the cylinders. I got an Email from Toyota that Says.
The factory only recomends .050mm oversize [20 over usa]. With 30 and
40 over [using aftermarket pistons in US measurments] The cylinder wall
is too thin to disperse heat properly.
Thanks for the help
1 - 1 of 1 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.