[DeTomaso] Compression ratio question

[JDeRyke at aol.com]

In a message dated 9/22/07 12:15:31 PM, dagny-kr at online.no writes:

> One thing i know for sure ,is that its very important to have the throttle 
> wide open when measuring the compression pressure,as you otherwise build up 
> vacum on the intake side and get wrong result :)
> 
Agreed. FWIW, I block the throttles wide open, pull the coil high tension 
wire from the coil and disconnect all the spark plugs, and rotate the engine 4 
times per cylinder to ensure getting a full compression stroke under mnimum 
load. This practice seems to result in consistent readings from one engine to 
another. Cheers- J DeRyke


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