Lifted Head/Heads?
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TECH Addict
Joined: Feb 2002
Posts: 2,319
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From: Lewisville, Texas
Lifted Head/Heads? Last Staurday night I made 3 1/8th mile N20, 75hp shot passes, after the 3rd pass I pitted and popped the hood to let it cool. I noticed coolant had sprayed, leaked from what looked like the over flow tank area. I decided better to be safe than sorry so I took it home. Sunday morning I checked the over flow tank while it was cold, it was at the hot full level. I checked the radiator,it was low so I serviced it, started the engine and waited until the thermostat opened and topped it off. Then I cleaned the whole area and could not find the leak. The head area looks clean and dry, the engine runs fine, no over heat light. Is it possible I lifted the head/heads without blowing the head gasket? I'm concerned it will do this again, whats the best fix? New head studs and gaskets? Sorry this is so long, TIA,
Mark
Mark
Re: Lifted Head/Heads? What head gaskets do you have? I had Cometic headgaskets and thats what happened to me as well. Basically you compromised the seal between the head and block but didnt "blow" the headgasket completely. More than likely due to detonation. What was your approx total HP? Total timing? Race gas? What plugs and gap?
On one occasion I compromised a headgasket and was pressurizing the coolant system while spraying...but on motor i could still floor it and no coolant. Was able to drive without issues for some time before the new Cometics came in, just not spray. Not sure if you have Cometics but I guess any head gasket could react the same way under the right curcumstances. Make sure you have the machine shop check the head or heads for a flat, true surface before reinstalling with new head gaskets.
On one occasion I compromised a headgasket and was pressurizing the coolant system while spraying...but on motor i could still floor it and no coolant. Was able to drive without issues for some time before the new Cometics came in, just not spray. Not sure if you have Cometics but I guess any head gasket could react the same way under the right curcumstances. Make sure you have the machine shop check the head or heads for a flat, true surface before reinstalling with new head gaskets.
Re: Lifted Head/Heads? When you guys blew your head gaskets, what gaskets were you using? What bolts or studs did you use? <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" />
