I agree 100%. I had a overheating problem several years ago... car would
overheat after running for some time, but there were no bubbles in the
cooling system, no pressure build up I could tell, and no coolant in the
oil. I changed the thermostat, the hoses (thinking the suction hose was
collapsing inside).......even the water pump.
Come to find out, there was a tiny leak between nr 2 and nr 3....just enough
combustion gas was gettting into the cooling system to air-bind the water
pump, at which point the car would overheat, even though the radiator was
cool. (leading me to think of the thermostat and hose problem, so some
wierd off the wall "the impellor fell off the water pump" problem).
I have a stroker 1600 with high compression....I dont think the guy who
built the engine ever re-torqed it after the first few hundred miles....and
of course, I never knew this was or was not done.
Anyway...new gasket, and very careful assembly following Paul Korts
instructions from the race team he crews on, and I have had no problems
since.....and while the head was off, I was able to verify that yes, I had
really bought a stroker engine, with big valves and porting...so it was an
interesting
and informative repair.
Best Regards,
Jim
Chesapeake Virginia
>From: "Marcus Pryor" <banshee16@starband.net>
>Reply-To: "Marcus Pryor" <banshee16@starband.net>
>To: <datsun-roadsters@autox.team.net>
>Subject: Head gasket failure.
>Date: Sun, 2 Jul 2006 20:30:31 -0700 (PDT)
>
>Greg asked if a head gasket could blow and not give any indication in the
>cooling system. It certainly can! There are many places where the gasket
>can leak and not involve coolant (for example, directly between the
>cylinders). I have even seen major cracks in combustion chambers that
>leaked compression but not water. In fact, there is about a 20 pct. chance
>of that happening. That's why I strongly recommend a leakdown test. A
>compression test only tests the ability of your engine to pump air and
>hold it for a short time. A leak down test is a positive test, and almost
>always finds the problem.
>
>Marcus A. Pryor
>For a new age of reason
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