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more piston ?'s 140-160 1970

posted by  escharf926 on  Sat Apr 28 07:53 CST 2007
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last visit: Sun Apr 29 07:51 CST 2007
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Ok, now I'm not sure if these pistons are the correct one's or not. I know I need the 1mm/0.040 set for a B20 block. The invoice from autopartswarehouse.com doesn't list the size. The top of the pistons read like this:

88.87
Sp0.04





Std


It's the standard marking that has me worried that these aren't the oversize ones. Also, when I fit the pistons in the cylinders, there seems to be a bit of play, ie they're not very snug. Without the rings in the cylinder, I can more them around a bit. I have an old mahle 1mm oversize, and when compared, they seem to line up, but when I put the old piston in the cylinder, it's very snug and has no play whatsoever. The numbers on top of the piston match up, except there is no Std marking.

What do you think?






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