I knew more then a fair % of "replace rings" engine rebuilds that had the
tops of the pistons come right off.....

John
Aircooled.Net Inc.

> Years ago in a distant nuther world a few lifetimes ago...I seem to
remember
> we replaced the pistons & cylinders more because the pistons themselves
had
> too much play in the upper ring groove with new rings in 'em. That problem
> caused some pumping of oil into the combustion chamber. Seems like it was
> .004 max between the ring and the piston and most with many miles had more
> like .006 or 8 of clearance. That and the set wasn't that much in the
whole
> scheme of things to take a chance on having a comeback, so every overhaul
> with very few exceptions got a new set. Granted the Boxer set is more
> spendy, but the theory remains. Spend the $$ the first time around if
> possible and save the heartache of having to do it again and cussing the
> stupid car for the mechanics transgresions..
> .02cents worth from an old school retired tech
> Daryl of AA Transaxle
> Duvall, WA. (Seattle area)
> 1-877-377-0773 toll free
> 425-788-4070
> aatransaxle.com
>
>