I used normal GM sealer last year and it really wasn't made for what i was doing.

So what should be used for a sealer on my head studs going into the block?


Thanks

Travis

I've been using #2 permatex or aviation sealer for years an never had a problem.

BT

thanks guys

Aviation sealer !!! dip the headbolt, then brush off the extra.

ARP markets a stud sealer for their studs but I've never used it.

Merc and OMC make a gasket/ thread sealer, similar to aviation sealer. I use it on all the engine bolts as well as outdrive bolts. It works great, and you'll always get the bolts back out. Works great on trailer wheel studs too!

Paul

Will the aviation sealer work on head bolts too???or will it effect your ability to tork them accurately?

Hylomar is the WAY TO GO... Period... i've used it on studs and head bolts that pass into water and i've never had a leak and you can remove the stud or bolt easily at a later date.

I've been using this stuff for years and then one day i was thumbing through Precision Engine Magazine and came across an article on sealants... Hylomar was actually their recommendation for that application... for anyone who doesn't know.. Precision Engine mag is a very technical engineering R&D type of publication... it's well worth reading if you are into that kinda thing.. some of the articles hurt my head too...

JR- toot toot

Also, after performing a few different fastener torque studies for some of my fixtures and what not, with various lubricants i've come to be a religious user of ARP Thread lubricant on all torqued threads unless they must be sealed (head bolts in water)... you get extremely repeatable torque values on a fastener, it takes less torque to achieve the proper amount of fastener stretch due to friction reduction and you gain increased eveness across a group of fasteners... such as head studs, rod and main bolts and studs, etc.

Ok, so Aviation sealer is the right stuff, where can I get it?