Compression Ratio

[Ruth]

Werner,

This is the Katech Whistler, it is used in competitive motorsports with CR specifications.
take a look at this video. https://youtu.be/Q4txVm9bbfA

John

Interesting

 

[Jim Brierley]

!

Hey Jim, tell us how to order your book...

e-mail me at jimb4e4@gmail.com. I have books in stock, priced at $30 ea. With mailing it comes to $34 mailed here in the States. I will send you the index and front cover and we can go from there. Thanks!

 

[johnneilson]

It should probably be stated here that the actual CR does not really matter.
The chart in Jim's book is more than adequate.

If you want to add another dimension to this, measure the chamber volumes of each to see the differences in the castings, that will keep you guessing.

John