Re: 4 ring piston knowledge(NON LSR)

["todd" <todd@twinjugs.com>]

Sparky, I talked to a longtime BMW mechanic today that said they(bmw) went 
to the forth ring also, and he believes it was due to excessive crank 
pressure the early motors were notoriuos for(I'm guessing the 1938 fits in 
that category). 
So good call and thanks(to one and all),
Todd

> I dont know about 4 stroke---but I "think that describes the ring 
> agrrangement on a 71 series detroit diesel---it has a pressurerised 
> cankcase