Thanks to every one that responded to my e-mail on overheating. It now appears
that I have a leak from the #3 cylinder that is causing my problem. I am going
to pull the head again and if all looks ok reinstall with new studs and new head
gaskets. I am using two as previous owner apparrently milled the head to
increase compression to about 9.6 to 1.
Bob Peck
don wrote:
> This may be old information to you, but are you running 2/3 to 3/4 water as
> coolant? Too much antifreeze impairs cooling. I found this out the hard way
> years ago. Use about 1/3 antifreeze and use Redline in your cooling system.
> You will gain maybe 10 or 15 degrees reduction in temperature.
>
> Also, you can take your car to a smog shop and they can put the sniffer in
> the coolant with the car running and you can see if you've got a cracked
> head or block or bad head gasket. Exhaust gasses in the coolant will cause
> terrible overheating.
>
> Don Scott
>
> At 11:41 PM 6/25/99 -0700, you wrote:
> >Just installed my rebuilt XPAG engine and am having problems keeping it
> >cool. Engine rebuild included cylinder resleeving, new bearings, new
> >3/4 race camshaft, new valves including valve guides and hardened
> >seats. Above work was done by a local machine shop and I assembled the
> >major parts and installed the engine.
> >
> >Symptoms: Engine starts and runs fine for first five miles then
> >temperature continues to increase until coolant boils (gauge reads 185 C
> >but doubt its accuracy as coolant should be good to about 265F. It
> >appears to me that the engine is putting out more heat than the cooling
> >system can absorb.
> >
> >The water pump appeared normal on installation.
> >
> >The radiator was tested and cleaned by a local radiator shop with no
> >discrepancies noted.
> >
> >Thermostat was tested and opened normally. I then cut out the center
> >part of the thermostat and reinstalled just the ring. This helped by
> >slowing the rate of temperature rise but end result was still the same.
> >
> >Any ideas on what could be causing this? Could it be from all the new
> >parts, the camshaft etc.? I am just driving it short distances until
> >this gets resolved. Total miles on the rebuild now is about 65.
> >
> >Incidentally air temperatures have been in the 90's the last couple
> >weeks.
> >
> >Bob Peck
> >
> >
> >
>
> The above address is for list purposes only. Please send private e-mail to:
> scottdon@napanet.net
>
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