Russ,
This suggests to me excessive crankcase pressure, and this would normally
come from blowby past the rings but a compression test could show otherwise,
better still would be a blowdown test to see if you have a specific problem
with a bore or a general problem with all pistons (and if you do have a head
gasket problem). As a matter of interest do you have an external feed to the
rocker shaft as an unrestricted oil flow to the head will give this problem.
John Kipping
----- Original Message -----
From: "Russell" <rjmunns@btinternet.com>
To: <fot@autox.team.net>
Sent: Tuesday, August 06, 2002 12:46 AM
Subject: Crankcase Pressure
> I had a major problem racing my 1500 spit this weekend with oil being
> forced out into the oil catch tank! So much oil came out that the sump was
> dry at the end of the race! The Catch tank had filled and the rest of the
> oil had found its way into the passenger footwell via the battery tray
> (Very lucky).
>
> I finished the race (just) but I now have to work out what the problem is
> as it had never done this before! The following details what could have
> caused it in my view but your input to a cause/solution would be
> appreciated!
>
> 1: Raised compression ratio prior to the previous race (no problem at the
> first race)
> 2: Bad catch tank design (just have a plastic bittle with pipes that go to
> the botton of the tank)
> 3: Blowback past the head gasket?
>
> The oil pressure runs at 60psi.
>
> Any help would be appreciated!
>
> Russ
> Http://www.triumphracing.btinternet.co.uk
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