Asmodeus

Can TTY bolts be used with headgaskets that need retorquing after a heat cycle?

Can you retorque Stock headbolts when say.. running Cometic gaskets?

orangeapeel

iTrader: (18)

I would most definitely not. TTY is a one time gig. I have always replaced mine. Always.

vettenuts

iTrader: (4)

I didn't think that Cometics required this?

Mssingkid

iTrader: (7)

You can use stock head bolts with cometic's, cometic's do not need to be re torqued. It's just a common safety practice. If you had ARP head bolts or such, then why not go for it, but with Stock TTY bolts, i wouldn't even try. Since they are one time use and TTY i would pay special attention to the order they are tightened, that can cause a sealing issue.

Irocss85

iTrader: (1)

make sure and "seat' the head after setting in place with a dead blow mallet. (big plastic hammer filled with sand )to make sure its all the way seated before you start the torque sequence. Im goin to use cometics, and Im goin to torque to the 22lb/ft 1st setp and then let sit overnight. then recheck the torque before moving on to the stretching stage.
and +1 on paying special attention to the correct sequence of stretching.
if youve already did the full tightening procedure, I would not go back and move them anymore. just cross your fingers and let it rip.

Ferocity02

iTrader: (60)

If you try to re-use the stock head bolts, they have a very good chance of breaking, which can be a pain in the *** to remove. A new set of stock head bolts is only $30.

Asmodeus

at what torque spec does the stretching start? I may just end up going with ARP's, I have not done the swap yet. I've just heard that cometics need to be retightened after a heat cycle and sitting overnight to help prevent leaks.

hammertime

iTrader: (1)

It never hurts to mark the bolt after torquing. A black magic marker or a little touch-up paint stripe would be all that it takes.

GuitsBoy

iTrader: (4)

Stock GM bolts and gaskets dont require retorqueing after a heat cycle.

FWIW, I sucessfully reused headbolts once in a jam. Torqued to 75 in 3 passes. Wound up leaving them in there for a few thousand miles till I had the new heads ready. The car was a daily driver and I had to get to work on monday. Now that ive got a beater, I wont ever take that chance again.

Asmodeus

What about stock GM bolts and Cometic gaskets?

My01SSCamaro

iTrader: (1)

go with arp you can pick up a set for around 140 and you will never have to worry about the stockers again

orangeapeel

iTrader: (18)

You can't go wrong with the ARP's really.

Andy1

With talk of head bolts, what is the standard practice with regard to preventing thread galling? Anti-seize, lube, or? Does the factory specify the threads be prepped with anything? For that matter, any fastener that threads into the aluminum block?

Thanks,

Andy1

My01SSCamaro

iTrader: (1)

I use permatex liquid teflon on my head bolts works great, but im using iron block not sure on aluminum im sure it would be fine you want something thats ganna keep coolant from coming past