Dick
Sounds like a small crack or leak in one of the exhaust ports. Hard to find
without pulling the heads and pressure testing. Had that problem that drove
me nuts for a long time.
Glen
----- Original Message -----
From: "Dick J" <lsr_man@yahoo.com>
To: "lsr list autox" <land-speed@autox.team.net>
Sent: Sunday, July 20, 2003 7:40 AM
Subject: engine cooling question
> I keep encountering a little problem that has me baffled. My SBC needs to
have the radiator topped off with about a gallon of water after every three
or four runs. I cannot find any leaks anywhere. I'm running a standard
radiator and catch tank. Now, my family car (3.8 Buick) is doing the same
thing. About every 500 miles or so I have to add about two or three quarts
of coolant. I have checked everywhere and cannot find any signs of leaking.
Neither car has any visible vapor in the exhaust. The oil in both motors
stays clean and clear. The only thing I can think of is that there is a
very small transfer into the combustion chambers somewhere, (seeping head
gasket?) and the coolant gets run through the combustion cycle so slowly
that there is no visible vapor in exhaust. What puzzles me is, if that's
what's happening, when the coolant is still (cool motor) I should be able to
see some sign of compression back into the coolant system - -bubbles or
something. Nope, !
> before
> the thermostat opens, the water/coolant is still. Anybody got any ideas
what's happening here?
>
> Dick J in East Texas
>
>
> ---------------------------------
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