what head cylinder bolts/studs do i need?

[stottpie]

i recently blew my head gasket.

i've already got my head machined and it's good to go, but what type of head bolts do i need? i've seen many that are bolts, some are called studs, and some seem very expensive.

i also haven't found many that specify it's for a turbo engine, which naturally has higher compression

thanks for any input!

[SVOeric]

actually the turbo engines have lower static compression.

There are only 2 types of fasteners available that I know of...
the TTY (torque to yield?) bolts, torque to some number, then turn them 90 degrees.
and Studs... which you screw long 'threaded bolts' into the bolt holes, and put nuts on to hold the head down.

I REALLY hate TTY bolts, and refuse to use them.
so If I can't use stock style bolts, and if I can't get/find them, I'd go with studs. BUT a note on studs... it is VERY easy to over torque. and personally, I use locktite, when they tell you not to.

[SVOeric]

Bottom line is that there is no benefit to using thread locker on these studs - it does not make the fastener stronger in any way and it kinda gets in the way making the studs more difficult to remove.

no, it does not make it stronger, but it does keep the stud from backing out of the hole, which is something I've seen happen.

[indiana dave]

Another note. There are two kinds of studs. Undercut, and not undercut. I know the difference, but have not seen a good explanation as to why one would be better than the other. I've seen some pretty high-end builds use stock head bolts.

[THESVOTRUST]

I've seen some pretty high-end builds use stock head bolts.

Stock yes but REUSED a few times - no !

We don't have alot of "background info" on this car (other than previous owner "rigged" ) to keep fan on .........

I would want to know if it gasket failed do to
Age/miles in conjunction with heat
Result of detonation in the cylinder from wrong timing/fuel
LACK of fuel (lean from injector/weak pump)
Octane or ........... overboost trials with poor fuel

Figuring you want to fix once.

Mark
P.S. What kind of "milling" was done (clean up or .140 used by NA racers)

[indiana dave]

Sorry. Shouldv'e specified that.
I knew the ones on my car had been reused a couple times, so installed new stock replacement ones on this last rebuild. Almost for ARP studs, but decided to save the money this time around.

[stottpie]

Stock yes but REUSED a few times - no !

We don't have alot of "background info" on this car (other than previous owner "rigged" ) to keep fan on .........

I would want to know if it gasket failed do to
Age/miles in conjunction with heat
Result of detonation in the cylinder from wrong timing/fuel
LACK of fuel (lean from injector/weak pump)
Octane or ........... overboost trials with poor fuel

Figuring you want to fix once.

Mark
P.S. What kind of "milling" was done (clean up or .140 used by NA racers)

not sure if you're talking about my car or not. if no, sorry for being egotistical, if yes, here is the basic info:

• 67k miles
• 2 owners, first owner didn't register it for 10 years.
• second owner ghetto-rigged stuff, like having the fan always live, with even just accessory on not ignition.
• new radiator. this makes me think the previous one was rusty which is co-symptomatic with a head gasket ready to blow (it was indeed rusty)