https://forums.maxperformanceinc.com...d.php?t=836191 No problems with this one whatsoever. Runs at 185 deg with the AC on. Hundreds of thousands of these engines ran a collective millions of miles.... I'm not understanding why one can't be built as a good cruiser for the street and run for the next 30 years for the way that we use these cars? I will point out the only limitation i found when building mine was on the shelf piston selection is a bit limited, but there are a few choices especially for a street engine.