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High compression
Posted: Thu Oct 01, 2015 9:52 pm
by Orinoko
Hi,my 1098 66 traveller is showing 190psi across all 4 cylinders.
Has not been skimmed or have a lot of carbon build up.
It is an export model.
It doesnt pink under load either.
Any ideas please.
Re: High compression
Posted: Thu Oct 01, 2015 10:28 pm
by bmcecosse
Faulty gauge.....190 psi is not realistic.
Re: High compression
Posted: Thu Oct 01, 2015 11:10 pm
by IslipMinor
Orinoko,
Where are you? If anywhere near Oxford we could compare the readings with my compression gauge - if the same OK, if not maybe the gauge?
Re: High compression
Posted: Fri Oct 02, 2015 1:05 pm
by Orinoko
Thanks for your kind suggestions.
Have tried a professional gauge (snap on) this morning and got 185psi across all 4
It starts and runs fine with no sign of pinking.
Maybe i should just leave alone.
John
Re: High compression
Posted: Fri Oct 02, 2015 2:41 pm
by bmcecosse
Indeed - but it is incredibly high - the head must have been heartily skimmed and/or flat top pistons fitted !
Re: High compression
Posted: Fri Oct 02, 2015 4:09 pm
by dalebrignall
lucky man