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Coolant boiling and clutch return spring

To: <spitfires@autox.team.net>
Subject: Coolant boiling and clutch return spring
From: "David Armitage" <David.Armitage@nottingham.ac.uk>
Date: Thu, 21 Jun 2001 10:29:55 +0100
Hi all,

I've a couple of questions about my 1967 MkII Spit. I've recently transplanted
the engine and after a test drive yesterday my coolant boiled (looks like it
sprayed from the pressure cap). This happened after the engine had been
switched off. At present there is no anti-freeze in the system and I guess
this caused the problem... would this be expected (I live at the top of a
steep hill), or is it likely that I have other cooling problems. Could the
head gasket be at fault (no signs of oil/water mixing and no steam from the
exhaust). I'm planning on adding anti-freeze tonight and trying again, just
looking for reassurance that it's nothing more serious.

The second question relates to the clutch return spring fitted to early
Heralds and Spits. This spring links the clutch release arm to a mounting on
the gearbox. The spring is currently disconnected and the clutch works OK, if
I reconnect the spring the clutch no longer operates (most of the slave travel
is used in bringing the release bearing to contact the diaphragm spring). The
only way I can see for the spring to operate is for some kind of adjuster to
prevent the spring from pulling the arm too far from the bearing. I'm not sure
if the spring is necessary, as the clutch would be released by the pressure
from the diaphragm. Anyone have any ideas on this?

Many thanks,

David

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