head gaskets felpro vs. cometic... opinions
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head gaskets felpro vs. cometic... opinions
hey guys i have a question took my ss down to williams performance to get them to get it running and tuned ( stupid coil harnesses ) anyways the finally got it running and went to do a driveability tune on it and the spec stage 5 clutch i bought from a member off of here was bad! so they did the best they could with what they had and i had to drive it home with it starting to slip after 2k rpms. drove it around easy to brake in the fresh engine. yes... yes... i hate to say it but after brake in i did get on it a few times with out it being tuned fully. more less a tune to drive and brake it in on even with it only on waste gate spring (13 psi) and a bad clutch and a non wot tune the car pulled HARD. anyways long story short i went to check my oil... annnnnddd... milky as crap! drained the oil and yep blown head gasket for sure. so here is my question i used felpro mls .051 thick 3.190 bore. ls1 aluminum block, 317 casting heads. it has arp head studs in it but when torquing the top studs (the smaller ones) i accidentally torqued them to 35 ftlbs when it was supposed to be 22. i backed them off and torqued them correctly but what do you think caused either of the head gaskets to blow? going wot with out the proper tune, felpro just isnt as good as cometic, or the head studs?
my corse of action is to drop the engine out pull the heads inspect everything buy new studs and new cometic head gaskets. sound good?
thanks,
anti_venom
my corse of action is to drop the engine out pull the heads inspect everything buy new studs and new cometic head gaskets. sound good?
thanks,
anti_venom
#2
i accidentally torqued them to 35 ftlbs when it was supposed to be 22. i backed them off and torqued them correctly
Jim
#3
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Going WOT without a dialed in tune is BRILLIANT. Good call. I vote that is what caused your head to lift pushing water. Why would you (or anyone) do that after spending all the time/money to build a turbo LS1 car????
None the less, run the GM 5 layer MLS. Search and the part number will pop up.
None the less, run the GM 5 layer MLS. Search and the part number will pop up.
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i've probably blown a dozen sets of head gaskets over the years, never put water into the oil, always put exhaust into the radiator. i would look for something more significant.
ive run fel pros with good results the last 3 years or so.
also, the heads will come up and clear of the studs fine from the top...or at least mine always have.
ive run fel pros with good results the last 3 years or so.
also, the heads will come up and clear of the studs fine from the top...or at least mine always have.
#7
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Your problem is not gasket or torque related. Unless you torqued the big studs to 35lbft lol
GM MLS work just fine, and are far cheaper than the rest.
And as Mouse says, for it to blow coolant into an oilway, is rather odd.
GM MLS work just fine, and are far cheaper than the rest.
And as Mouse says, for it to blow coolant into an oilway, is rather odd.
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i think you might of used the 5.7 head gaskets. when you where actually supposed to use the 6.0 gaskets with the 317 heads. the 5.7 head gaskets will overhang in to the combustion chamber when used with the 317 heads. and that will cause the fuel to preignite and lots of other interesting stuff.
#10
i've probably blown a dozen sets of head gaskets over the years, never put water into the oil, always put exhaust into the radiator. i would look for something more significant.
ive run fel pros with good results the last 3 years or so.
also, the heads will come up and clear of the studs fine from the top...or at least mine always have.
ive run fel pros with good results the last 3 years or so.
also, the heads will come up and clear of the studs fine from the top...or at least mine always have.
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Going WOT without a dialed in tune is BRILLIANT. Good call. I vote that is what caused your head to lift pushing water. Why would you (or anyone) do that after spending all the time/money to build a turbo LS1 car????
None the less, run the GM 5 layer MLS. Search and the part number will pop up.
None the less, run the GM 5 layer MLS. Search and the part number will pop up.
i honestly cant remember what bore they were but i am for sure going to buy the 6ltr gaskets this time
i've probably blown a dozen sets of head gaskets over the years, never put water into the oil, always put exhaust into the radiator. i would look for something more significant.
ive run fel pros with good results the last 3 years or so.
also, the heads will come up and clear of the studs fine from the top...or at least mine always have.
ive run fel pros with good results the last 3 years or so.
also, the heads will come up and clear of the studs fine from the top...or at least mine always have.
if it helps... when williams performance finnaly got my car running, at idle it had a slight trickle coming out of the passenger side head for about 5 min. but they said it stoped and that it was probably where the new head gaskets didnt seal good until they warmed up and it never did it again.
thanks guys for the help
#12
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When LS1's lift the heads they usually just push water, just leaking boost/combustion into the cooling system but not letting coolant back in to the cylinder. Thats why no one has mentioned the oil looking like chocolate milk. I've never had it happen myself but I have researched it a little.
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I had coolant in my oil big time it was cracked aps housing,internal crack.
Usually its on of these things, cracked block this can happen if you put in head studs or bolts and have coolant still in the head bolt holes. The fluid is non compressible and easy to crack the ls1 aluminum block.Thats why critical to clean out the head bolt holes before putting in new studs or bolts.
Second you can have cracked head. Third you can have internally cracked turbo center cart if its water and oil cooled type.
I was also under the impresion though that a blown head gasket would let coolant into oil.
Usually its on of these things, cracked block this can happen if you put in head studs or bolts and have coolant still in the head bolt holes. The fluid is non compressible and easy to crack the ls1 aluminum block.Thats why critical to clean out the head bolt holes before putting in new studs or bolts.
Second you can have cracked head. Third you can have internally cracked turbo center cart if its water and oil cooled type.
I was also under the impresion though that a blown head gasket would let coolant into oil.
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so basically im looking for a new block or heads?
i blew the block out when i put the studs in but how would that crack the block? even if water was in the holes your only supposed to screw the studs into the block finger tight?
thanks guys
i blew the block out when i put the studs in but how would that crack the block? even if water was in the holes your only supposed to screw the studs into the block finger tight?
thanks guys