zulimee
Probationary Member
- 20
- 0
- Dec 11, 2010
-
connecticut,
Connecticut
what the best headgasket and sealant for running boost at 2bar. how to i can find 2g dsm eclipse 95 headgasket 87.5mm.
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Sure. I couldn't tell you which part number to use for that bore though.may i using mitsu composite gasket for high cylinder pressure if my bore 87.5mm
While I agree that standard ARP's are very capable and just fine for most people, many more than 10 people benefit from running tool steel studs. Anybody pushing 65 lbs/min or more could benefit from having them.There are probably less than 10 people on this site that NEED L19s. What was everyone running before L19s were available?
Sure. I couldn't tell you which part number to use for that bore though.
While I agree that standard ARP's are very capable and just fine for most people, many more than 10 people benefit from running tool steel studs. Anybody pushing 65 lbs/min or more could benefit from having them.
Before they were available, people would either go through 8740 studs like it was motor oil - pushing coolant all the while, or they would drill the head and block out to run 1/2" studs.
Head studs are a bit like clutches. On a clutch, if you use a more aggressive friction material on the disc, you can get away with less pressure on the plate - or vice versa. If head stud diameter is sufficient, you can get away with using a cheaper, weaker material like 8740 chrome moly. But, Mitsu used a puny 11mm stud in the 7-bolt. In that diameter, the strength and capabilities of 8740 is very limited. Thus the reason many people (especially 7-bolt users) use H11/L19 tool steel studs.
If a bolt/stud stretches permanently to a freestanding length that is even .001" longer than when it was brand new, then it's garbage. Retorquing will only make it worse. Replacement is the only solution.Since we're on the subject, is it possible for a single or couple of stock head-bolts to stretch or possibly loosen over time and cause coolant to be leaked? And if so, could it simply be retorqued to be resolved or should the entire head be removed to address the issue? >> Nub question, nub forum
I heavily disagree, but would like to hear your explaination anyway.In my research I don't even think your compound setup needs L19s.
If a bolt/stud stretches permanently to a freestanding length that is even .001" longer than when it was brand new, then it's garbage. Retorquing will only make it worse. Replacement is the only solution.