changing out headgasket!!!!!!!!

[Turbofreak]

well, we have some water seepage at the front of the block using an MP head gasket, so I think we will go to the COMETIC gasket now and see how it does....

Questions: 1. Do we need to apply any spray sealer onto the cometic gasket?

2. what should the torque spec be using ARP head studs? using moly or oil, please specify..

3. can this be done by just lifting the head up and inspecting for problems (gasket stuck to the block or head, cracks, etc.. or do we need to fully pull the head out of the car??? we were hoping that this could be a fast gasket swap out...

THANKS!!!

ANOTHER WEEKEND PROJECT!!!!!!

argh!!

RYNO
OMNILET

[LancerShelby]

It sounds like you might have some other issues, like a warped head/block or dirty mating surfaces. If an MP is not sealing, something's messed up.

[CSX-T#534]

Quote:

Originally Posted by LancerShelby It sounds like you might have some other issues, like a warped head/block or dirty mating surfaces. If an MP is not sealing, something's messed up.

We were thinking it was a gasket issue caused by higher boost pressures (22# plus) and the Mopar gasket and possibly not having the studs retorqued after heat cycling. If so, the cometic gasket should fix that.

So, no one wants to comment on torque with ARP studs?

[Moparmonster]

You'll need to remove the head to get the gasket changed. As far as sealer, don't use any gasket sealer. Use a high temp silver paint, however, letting it dry before putting it on the either the head or the block. It acts as a sealant without having gasket goo all over the place.

[BigL350]

The fastener dictates the torque spec, so torque it to whatever ARP specifies. That's what an ARP tech told me when I was assembling my SBC with cometic gaskets.

[LancerShelby]

Quote:

Originally Posted by CSX-T#534 We were thinking it was a gasket issue caused by higher boost pressures (22# plus) and the Mopar gasket and possibly not having the studs retorqued after heat cycling. If so, the cometic gasket should fix that. So, no one wants to comment on torque with ARP studs?

I run 20psi all the time with mine and I'll turn it up more next season without worrying about my gasket.

[mo' parts]

only reason my mp gasket blew at 22-23 psi was from too much timing. caused combustion pressures and temps to build up too quickly causing the gasket to blow into the water jackets.. the hardest place for a gasket to seal. people run those high #'s on mp gaskets all the time with no probs............

[CSX-T#534]

We stumbled across the reason for the blown gasket just after getting it running. Took it for a ride to check things out and noticed that the fuel pressure was not as high as it should be under boost. The pump was a little noisy and I pulled the pump out and discovered a tear in the sock and the screen at the inlet of the pump was clogged with trash. So, now it has a new sock and I adapted it differently so as to not use that little restrictive plastic adapter that necks down the inlet to less than half the size. That should be an additional improvement.
I still need to do a re-torque on the studs tomorrow.

[glhsken]

Ryan, That gasket will hold to 460 ft lbs of torque 400 +whp with mp headbolts. Time after time after time. If it's blown, be thankful you did not have a cometic. Glad youf found the real problem.

[Turbofreak]

That's what I had heard about on that gasket, pretty good....

Oh well, like you said, Todd (CSX-T#534) figured out why it was lifting sounds like.... we had poopy in the fuel pump because the sock was torn...

It now has some type of massive water leak at the back of the block and Todd is getting really tired of messing with the car.... I just help him out with it and we ride around picking on LS-1 cars....

hopefully, it is just a turbo water coolant feed line or something simple... he spent most of the day re-torquing the head and installing a nice stereo system, and then it goes and starts leaking water at the back of the block...

ugh....



It sucks man....

RYNO
OMNILET
part deux

[glhsken]

uH oh... CHECK THE BLOCK BETWEEN THE freeze plugs. Likes to crack there

[Aries_Turbo]

Quote:

Originally Posted by glhsken uH oh... CHECK THE BLOCK BETWEEN THE freeze plugs. Likes to crack there

sounds like a job for JB weld hehehe

Brian