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Strange-looking piston
Posted: Mon Apr 24, 2017 6:21 pm
by clanger9
This
eBay auction appears to include the 10.5:1 high-compression piston from a CS engine (part number 042242 - discussed in
this thread).
What's with the holes in the skirt? I've not seen a piston like that before.
Is it to improve oiling? My 9.5:1 piston (part number 043646) just has a solid skirt.
Re: Strange-looking piston
Posted: Mon Apr 24, 2017 9:01 pm
by Rob Harknett
If this has ben done by some one trying to lighten the piston, it could go wrong. Pistons are oval and expand round when they warm up. The holes may prevent this from happening. I have seen a piston like that from the early 1900's Motor Cycle magazine I'll see if I can find it but not spend to much time looking.
Re: Strange-looking piston
Posted: Mon Apr 24, 2017 9:59 pm
by robcurrie
Sometimes teflon buttons are fitted in skirts, is this provision for them?
Rob C
Re: Strange-looking piston
Posted: Mon May 08, 2017 2:43 pm
by Janet
robcurrie wrote:Sometimes teflon buttons are fitted in skirts, is this provision for them?
Rob C
Is that so they don't stick when you're unfastening them?
Re: Strange-looking piston
Posted: Mon May 08, 2017 3:26 pm
by robcurrie
...so that sweaty fingers can't undo them
Rob C