Head gasket sealant?

[A67StangMaster]

I think my head gaskets are not sealing i went through a couple of gaskets. is there a sealent that i am supose to use before i put them on? I dont understand why its leaking waterinto my cylenders? the heads arnt warped I had them checked out. any other reasons?

 

[Shakin66]

Years ago I used a copper sealant that you sprayed onto gaskets before you set them into place. It was great stuff for many different applications including head gaskets. After you spray them they become very tacky and my thought was that if nothing else it would help hold the gasket in place.

 

[Martyred]

I plan to do the same thing, oil is consistantly leaking out of my head from under the gasket, that was one of the reasons for my taking apart my I6.

 

[gingerbreadman]

your block can be warped aswell, put a straight edge on it and check with feeler gauges.

how are you preping the block and head surfaces before you install the heads? use a gasket remover and putty knife

are you torquing the bolts in proper sequince and torque stages? refer to any manuel even a cheapo haynes book explains this.

as for gasket goop on the headgaskets if the instructions that come with the gaskets dont call for any dont use it.



-gbm-

 

[brin0357]

Check for warpage because you shouldnt need sealant on the gaskets. Also, run a tap/ thread cleaner through your threads to make sure your getting proper torque specs. (60-70 ft-pounds for sm. block)

 

[A67StangMaster]

Ok i had the engine rebuild about 2 years ago and I checked it at home and the heads got looked at a couple of weeks ago by a michine shop. I am pretty sure the block is not warped and the heads I know for a fact arnt warped eather. I tourqed the heads to 75 and still it leaks I am thinking its from the intank manifold but i dont know where I replaced all the gaskets and used about 2 bottles of rtv glue just in case.
This problem is really ticking me off. I had the block tested for leaks or hair line cracks before the rebuild but not the heads. the block passed so i didnt want to waset anymore money so i did not do the heads.

 

[LMan]

95% of these issues are with the intake, not heads. Look there thoroughly.

IMO straight heads and straight block dont need sealant. Never used it myself.

 

[krash kendall]

Have a read of this thread http://forums.stangnet.com/showthread.php?t=657093

Then come back and tell us what you think.

 

[krash kendall]

Lman, that Karr avatar is creeping me out.

 

[A67StangMaster]

krash I checked out the post you sent me. My problem is that I am getting water into the cylinders not the oil pan.I changed my oil 3 times allready and no rad fluid anywhere..

 

[krash kendall]

If the intake gaskets are installed incorrectly or damaged, the coolant can enter through the intake valves.

 

[A67StangMaster]

yea but wouldnt oil be there to? all i have in the cylinders is rad fluid and gas thats all.

 

[krash kendall]

Not likely. I'm trying to think this one out and all I can say is, if your engine, heads and intake are in good shape without any cracks in them, then you just have to install them with the proper gaskets and everything should work out.

 

[A67StangMaster]

there is one problem I saw in the block and heads, on the right hand side of the left side of the block and the right side of the right side of the block there are water ports that get coverd up by the head gasket I tried to look for different head gaskets ever where but thety all truned out to be the same one so I asummed that they are supose to be blocked off.?

 

[krash kendall]

Tell us what engine you have. I assume it is a 289 or 302? Maybe one of the more techy engine guys can give you an answer. I don't know and I'm not going to guess, as that won't help you at all.

 

[A67StangMaster]

Ok its a 302 block with 289 heads... I am going to go look at the date codes for it later I know the heads are a 68 heads and I am guessing that the block is a 68 too.