Brian,
According to John Thomason's book on originality, "after FD 48,653 cooling
efficiency was improved when a new radiator and cap were fitted, which
operated at 13lb/in pressure compared to the earlier 7lb/in..."
If your radiator is original, with the extension panels fitted to the sides,
you need a 7 lb cap, NOT a 6lb or 13 lb cap.
Hope this helps.
Take care,
Jeff McNeal (San Diego)
'67 RHD Spitfire Mk3 aka "Mrs. Jones"
'68 LHD Spitfire Mk3 project
'70 GT6+ "Accidental" restoration project
http://www.TotallyTriumph.net/spitfire/spitfire.shtml
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----- Original Message -----
From: BrYarboro@aol.com
To: spitfires@autox.team.net
Sent: Thursday, May 30, 2002 6:26 PM
Subject: Cooling Question
Hi folks;
Recently, I found that the 6 psi radiator cap was not holding pressure. Went
to the local NAPA store to get another, but wasn't sure if the 13 psi or 6
psi was right. He looked it up and his little book said 13 psi cap.
Installed
it and discovered that water has leaking from somewhere and hitting the fan
and spraying all over the bonnet underside. The only place I see any trace
of
water is at the thermostat gasket, which was replaced , with the thermostat,
in the fall. So, do I have a bad gasket, or is 13 psi too much pressure? I'm
going to try a 6 psi cap tomorrow and see what happens, but I'd like to be
sure its safe to drive to Lime Rock CT (about 1.5 hours) on Saturday for the
vintage races there. ( By the way, is anybody else going there? I'd love to
try and meet there, if possible.)
TIA,
Brian
'67 Mk. 3 (FD 13321)
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