when exactly do u need to get studs? whats differance betwwen some of the differant studs out there if there is differant ones?

 

You will get the headstuds, washers, retainers and moly lube.

There are several different types.

ARP 12mm: Made from ARP 2000 material rated at 220,000 PSI
ARP 12mm: Made from Custom Age 625+ material rated at 280,000 PSI
A-1 12mm: Made from 4340 material rated at 190,000 PSI
A-1 14mm: Made from H-11 material rated at 220,000 PSI

Doug Smith

 

what kind of power do u need them at ? this just for big twin turbo set ups?

 

anything over 40psi usually to be safe...

i ran 47psi for 5-6 months and my headgasket just blew...and im only at 450hp

 

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According to your sig you are walking a very dangerous line right now.
If I were you they would be my next step, if you wait for it to go it gets expensive where as if you run a set in now you will be lowering you potential for failure by quite a bit. Mine had a bit smaller sticks than yours and only went 11 months. Some are better than others

 

With that HX35/40 on there drive pressure is your worst enemy!! That can blow a head gasket as fast as anything else!

The HX55 will help in that respect, but the boost will be higher then! I would go ahead and stud it for good measure

Chris

 

Don't mean to steal the thread but thats something I've never understood? How does drive pressure of the turbo effect cylinder and blow head gaskets?

Thanks
Randy

 

An HX35 can take A LOT of drive pressure to spin up to higher boost...I've heard as much as 75psi drive to make 45psi boost...not real efficient!

If you have that much drive pressure, you can't purge the cylinders of hot air...so when you compress that hot air, then inject fuel, it's that much hotter...more heat = more pressure = bye bye head gasket!!

Now, it's not that common of failure with a stock turbo...but you go putting on a B1 or something that can hold up to making 60psi...but it takes 80psi to do it, it can really take it's toll!!

Help at all?? I'm not real good at explaining myself :dummy:
Chris

 

so is it something that i can reuse my head gasket? how much does studding cost?

 

Ya it helps, but wouldn't hot air compress easier then cold dense air, or am I still not understanding correctly?

Randy

 

Warm air compresses easier (from a turbo's standpoint)...but there is less of it! Cool air is better air!!
Hot air also ignites the fuel a bit faster...basically advances the timing, which is also hard on gaskets!

MADMATT...A set of ARP studs should run you ~$425 IIRC...Doug (Jetpilot) @ PDW sells them everyday, and I bought mine from Rip @ sourceautomotive.biz!! You can replace them one at a time without pulling the head...and not disturb the head gaset!! Talk to whoever you buy them from and they'll tell you anything else you need to know!!

Chris

 

chris one more questions what kind of time frame to do something like that?

 

Hmm...haven't done it yet I would guess 3-5 hours depending on you comfort level! I would definately try to clean the holes out the best you can, which can be a little time consuming. Also, you will have to do a couple retorques after a couple heat cycles of the engine...more time!

That would be a better question for someone who's done it...but I'm sure they will chime in!

The headstuds for my 95 have been sitting on my shelf for a year
Chris<---Lazy!

 

studs are a pain in the butt. make sure You have thing planned out and do much research before installation. remember you have to do valve lash as well!

 

i am not excited at all to do this