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Old 10-11-2018, 07:05 PM   #32
Synchro909
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Join Date: Jun 2014
Location: Melbourne, Australia
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Default Re: High compression heads?

Quote:
Originally Posted by Lawrie View Post
What sort of cranking pressure do you get with the 5.5 head.
Lawrie
In my tourer, which you know, Lawrie, I get more than others here have said they get - high 90's. Very close to 100 psi in each. That's higher than I would have expected from 5.5:1 compression ratio but that's what it is! Bores are 60 over, FWIW.
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