Hi John-
It's always possible that rings have broken or didn't seat. You can check
that by removing one spark plug at a time and noting any difference in the
pressure beat coming out of the oil filler. If it's noticeably less, you've
identified the culprit cylinder. Then remove all the lplugs and double
check with a wet/dry compression test. Wet is squirting a little engine oil
on each cylinder and noting the difference in pressure.
Best,
Skip Gurnee
64 TR4
765 TR4A
----- Original Message -----
From: "John Gillis" <jgillis@tcd.ie>
To: "Triumph List" <triumphs@Autox.Team.Net>
Sent: Sunday, December 09, 2007 2:55 PM
Subject: [TR] Back pressure
> still trial running the motor/engine (wont go into that one again) on
> the TR2. There is significant pressure, no smoke, coming back through
> the oil filler timed with the "beat" of the engine, I don't know the
> nature of TR engines, all previous work being on the Herald/Vitesse
> range, but I have never experienced such powerful pressure,
> particularly on a re-built engine, should I look into this further,
> any thoughts, theory's??
> Regards
> John
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