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Old 12-02-2017, 01:05 PM   #19
GOSFAST
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Join Date: May 2010
Location: Long Island, NY
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Default Re: How do I fix this??

Quote:
Originally Posted by Brian View Post
None of the conrods are centred in any of the pistons. The worst 'set' is as I pictured, with only .020" clearance. I still have the milling machine set up from when I machined the piston bosses, so could take a bit more off of the two pistons on one side, alternatively could take a bit off of the side of the small end of the conrods. Which would be preferable? I ask again- what is the minimum side clearance required?
Hi Brian, on higher HP units you would want .060", I believe you could get by on the Flatheads with a .040" minimum.

Having said that, if you're going to make a correction just take it right to .060".

Thanks, Gary in N.Y.

P.S. During the course of working with almost ALL crank mfr's, from the budget pieces (Eagle/Scat, both Chinese) up to the "Made-in-the-USA" high-end ones, we see many pitfalls with most. Recently had one hell of a time balancing a fairly expensive Crower shaft. Ended up welding our own flange to the existing flywheel flange on the Crower. I called out there and really complained, they didn't care at all and said "if you don't want the crank send it back". Definitely not fair to the end customer??
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