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Old 23-08-2018, 08:37 PM   #11
Flip
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Join Date: Mar 2010
Location: Beachtown
Bike: M900
Posts: 2,188
Quote:
Originally Posted by Nickj View Post
50/50 Acetone and Automatic transmission fluid.. Pour some in and top up untill it stops leaking past the rings.
Once the level stays constant the rings have popped back out and pretty much all the gaps filled with oil.
The acetone loosens and eventually melts the gunge in the ring grooves and the oil is loose enough and carried with the acetone to lubricate.
This is a bit of a cheapo plus gas mix, just a bit more aggressive.

Best is to get the pistons out then clean the grooves, scotch-brite works well as it isn't too abrasive. The rigs do get more brittle with age but I'd guess would be OK.
Obviously the problem needs sorting but I thought Acetone was bad for rubber, Nitrile, Viton and Silicone.

Perhaps for the time it is in there it's not enough to cause a problem but I did a little search and this is what I found on the Web:

http://www.efunda.com/designstandard...SC=Acetone#mat
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