[DMCForum] Re: Compression Question
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[DMCForum] Re: Compression Question



When my engine wouldn't start, I only had between 90 and 120 psi.

When I put some MMO in the tops it shot up to 150-170. I haven't 
measured it since I got things -properly- lubricated but according to 
the manual for the B28F (which I know you don't have) that's 
excellent.

Hm. I'd be interested in measuring mine now. I'm curious.

--- In DMCForum@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> 
wrote:
> Recently bought own compression gauge with fresh O rings and long 
plug
> extension. Readings on my R30 are basically 170 psi across all six
> cylinders (one @ 160 but still within tolerances).
> 
> Message #35724 in other group measured at 130 psi.
> 
> What kind of readings are other people getting? 
> 
> Websites claim my 2.5 liter R30 puts out 145 HP, so am wondering if
> Fench used different pistons or heads. Also wonder about cams -- my
> engine seems to rock & roll more than stock DeLo. Martin G: want to
> run this past Darren?
> 
> Been running lean & hot (vacuum leak, finally located) so isn't 
carbon
> buildup.
> 
> Bill Robertson
> #5939



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