This is the way they act when there is a headgasket leak. High temp, stuff
in the catchtank.
To confirm this kind of stuff, I bought a leak detector --- not expensive
at about $30 at Carquest. It's a jug of liquid and a gadget to suck the
gasses above the fluid in the radiator through it. I recommend it hoghly.
At 12:19 PM 6/26/2004, Chuck Arnold wrote:
>Did a track day yesterday -- first time out with a lot of changes.
>
>Three strange problems:
>
>A lot of "shaking" on heavy acceleration -- hope it is just the prop shaft out
>of phase, else I face a lot of investigation. It is a newly rebuilt short
>block by a very good builder. Pretty sure all is balanced well. Hope it is not
>the flywheel coming loose -- though I drove at least 100 hot laps with it and
>had no external manifestations of problems. Perhaps it could be some part of
>the motor mounts not tight -- bud did tighten them well I am sure. Any other
>ideas on where to check?
>
>The second problem is disappearing water. The sessions last twenty minutes. By
>the end the water temp is up to 240. When I check the overflow bottle after
>the sessions, it is half full. The radiator is down two quarts. I see no
>evidence of water leaks in the system. Where is it going?
>
>Third --oil pressure. This is a brand new engine, new oil pump. Now has 250
>miles on it. Has .04 over forged AE pistons. Accusump, pan baffles.. External
>oil feed to number one cylinder. Engine has 50 pounds oil pressure when cold.
>As it warms up, the pressure drops to 24-24 pounds. Never saw it go lower, but
>my warning light [which comes from a different sensor than the oil pressure
>sensor] that comes on at about 27 pounds was lit for most of the sessions. So
>-- it this too low? If so, what can be done to improve it?
>
>The car performs well. Pulled 6200 RPMs in 5th [Toyota Transmission] at the
>end of the straight at SIR {Now Pacific Raceways} which means about 125 mph.
>
>
>Chuck Arnold
>Technical Manager
>Oracle Northwest Fulfillment Practice
>425 241 0457 [cell]
uncle jack
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