Using Ge1200 On Head Gaskets

[JOHNZAZA]

Ive been hearing on the street( buick chats) that there is
a bullet proof head gasket set up. I think RJC products
is selling it.
They take a 84 85 steel shim gasket load it up with
ge 1200 silicone then stack the gaskets together.

Has anyone tryed this and did it work?

I have tried steel shims (blew em)
i have tried stock (blew em
I have tried fel pro 1000's ( total garbage)

Also if you have used studs or bolts

THANKS ALL YOU BUICK NUTS

 

[JOHNZAZA]

OH ANYONE

 

[VictoryTrans]

There have been a few threads about this, so you might wanna try doing a search.

But my dad has used the GE-1200 with double stacked steel shims when he had the 109 block. Withstood 30psi right until the motor was sold

 

[YGETV8]

GE1200 has worked successfully for many people. I think the general reason for stacking two gaskets per side is to just maintain stock CR. You're right, though Gene... several people have used only one to give their CR a slight bump.

 

[YGETV8]

Forgot to mention... a buddy used dual steels with a copper spray sealer and promptly blew them to the outside! Made a really cool sound under boost, though! Re-did them with 1200 and was fine after that. Jay

 

[JOHNZAZA]

thanks guys i appreciate you help !

i think if this process works why doesn't everyone did it
to help hold the heads on

 

[Intercooler]

I used a single with 1200. If you need 1200 I set up an account to get it and have a few. LMK.

 

[JOHNZAZA]

When you apply it do you ley it sit for long

wht about the bolts ( studs or bolts)?

 

[GN owner]

Can someone tell us where we can buy the stuff?

 

[JOHNZAZA]

THIS IS DEFINITELY THE WAY TO GO THANKS AGAIN GUY'S

 

[Intercooler]

I found it will skin in about 5 minutes so have everything ready to go! I have 1200 if you need some. The cure time for 1200 to fully cure is 21 days. You can probably run it before that time but to get a real good hard bond wait if you can. I had to go away for 3 weeks so my engine I just put together will be sitting at 21 days when I get back I plan on going over the studs again just to see if they moved. If you run a search I posted some info when I did mine. HTH

 

[TurboBob]

What's the cure time relative to temperature?

Might the stuff cure in an hour or two of normal engine running?????

TurboBob

 

[blackbuick87]

What is 1200?
Forgive my oversimplification, but is it like a combination between JB Weld and RTV silicone ?

 

[Intercooler]

Originally posted by TurboBob
What's the cure time relative to temperature?

Might the stuff cure in an hour or two of normal engine running?????

TurboBob

I am sure the cure time will shorten with elevated temps but I don't know what effect it will have on the bond.

1200 is a Contractors grade of G.E. silicone.

 

[TurboBob]

Initial research:

1/4" bead fully cures in 5-7 days at 25º C.......

More later,

TB

 

[JOHNZAZA]

AAA

 

[KWIKR 1]

Will the heads ever come off again with this stuff ?

 

[Addicted2boost]

I am actually using the SS hg's and the GE1200. I might have the car runing today. I'm just a slow poke getting it back together. I will let you know how I like it when I run it for awhile. Definately torque, retorque and then torque some more. That seems very important on these engines to retorque the HG's until your blue in the face. I went thru 2 sets of stock composite GM HG's before I went with this setup. I think after every race night, I will retorque my HG's just to make sure the ARP bolts are tight like they should be. I'm tired of replacing my HG's. This is the first time using the SS's and I hope I never have to replace them again. Will the heads ever come off with this stuff? I looked at it and wondered that myself. To get the heads off, you may have to remove the head bolts and then run the engine just to see if the compression of the engine runing at idle will lift the heads off easily. Or take a bottle jack and place it on the lifter valley area and jack up the top of the head. OK now I'm just being stupid.

 

[JOHNZAZA]

AA

 

[1badTTA]

Well with my growing stack of blown head gaskets I am going to have to try this next time. I have 4 HG's that have blown for various reasons (bad coil, overboost, wiped cam, detonation from crap winter blend gas) and I am getting really tired of changing the gaskets. I am aware they are the weakest link and save the bottom end by blowing first, but I am blowing then too easily and never in the same place (blown 5 out of 6 cylinders).