View single post by Greg Fletcher
 Posted: 10-01-2009 10:26 pm
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Greg Fletcher



Joined: 03-11-2005
Location: Lake Nacimiento, California USA
Posts: 430
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 No idea about those Jahn's pistons except they are a company from the old days, I don't think they are around any more. Might be an interesting science experiment. I can tell you that piston technology has really progressed in the last few years. The newer cast pistons from CP run very tight tolerances with low expansion. Older cast units need quite a bit of space to expand meaning if your liners are not recut wide enough, they will seize. That's not a fun experience.