On Wed, 23 Aug 1995, Roger Garnett wrote:
> John M. Trindle writes:
>
> > Compression check shows (engine hot
> > from race) 150-155-160-35 !!
>
> 35-160-155-150, we usually start with 1. (You confused me for a miunte, when
> you said 1 & 2 were lean, and I saw a problem in the 4th position.
>
You're right, I was used to listing them backwards verbally for dramatic
effect.
> This, combined with high crankcase pressure says that you've probably lost
> a piston. (Or possibly the head gasket or the block itself, but...) The
> granularity on the plugs is aluminium from the piston(s) melting down. The
> cylinder pressure is pressurizing the crankcase, and blowing oil into the
> intake. Either way, the head's gonna have to come off.
>
Right in 1... the #1 piston has broken rings, and the lands (??) where
the rings sit have broken for about 2 inches. Restated: the part that
separates #1 compression ring from #2 compression ring has blown off (in
what looks like a series of events) for a length of 2" or so. The rest
of the piston looks fine.
Oddly enough, the cylinder wall looks nice too!
John M. Trindle | jtrindle@tsquare.com | Tidewater Sports Car Club
'73 MGB DSP | '69 Spitfire E Stock | '88 RX-7 C Stock
Home Page: http://www.widomaker.com/~trindle
"Quantized Revision of Murphy's Law:
Everything goes wrong all at once."
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