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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
 
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