The Ford Barn

KITELOOP · 05-11-2014, 11:37 AM

i have on my flathead (french block) a pair of new offenhauser heads with
new graphite big bore (up to 3.3/8 bore)!!!
on both heads the water is passing along every head bolts !!!
why why why !!!!!!

Old Ford Addict · 05-11-2014, 11:47 AM

Did you use thread sealer?
If yes or no
Go get some Permatex Right Stuff and use that on the bolts … its worked 100% on the last three motors for me.
Unlike all other sealers alleged to be the best

Walt Dupont--Me. · 05-11-2014, 11:59 AM

Did you put some good sealer on the head stud when you install them in the block? Some times with the stud and nut combo ,there will be a little seepage around 2-3 head nuts. They usually seal them self in a couple of days. Once in a while 1-2 hates to seal, I then remove the nut and smear some RTV on the thread and torque it down again. The USA blocks have all the threads going in to the water except 3. They have to have a good sealer on the before screwing in. Walt

Ol' Ron · 05-11-2014, 05:33 PM

I use some steam pipe sealer on the threads for bolts and never seize for studs.

Mr_Coupe · 05-12-2014, 08:46 AM

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Great advise, I didn't know that could happen.

05-11-2014, 11:37 AM	#1
KITELOOP Junior Member Join Date: Oct 2011 Location: six fours les plages Posts: 26	OFFENHAUSER head i have on my flathead (french block) a pair of new offenhauser heads with new graphite big bore (up to 3.3/8 bore)!!! on both heads the water is passing along every head bolts !!! why why why !!!!!!

05-11-2014, 11:47 AM	#2
Old Ford Addict Senior Member Join Date: Feb 2014 Location: Nor-Cal Posts: 140	Re: OFFENHAUSER head Did you use thread sealer? If yes or no Go get some Permatex Right Stuff and use that on the bolts … its worked 100% on the last three motors for me. Unlike all other sealers alleged to be the best

05-11-2014, 11:59 AM	#3
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: OFFENHAUSER head Did you put some good sealer on the head stud when you install them in the block? Some times with the stud and nut combo ,there will be a little seepage around 2-3 head nuts. They usually seal them self in a couple of days. Once in a while 1-2 hates to seal, I then remove the nut and smear some RTV on the thread and torque it down again. The USA blocks have all the threads going in to the water except 3. They have to have a good sealer on the before screwing in. Walt

05-11-2014, 05:33 PM	#4
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,855	Re: OFFENHAUSER head I use some steam pipe sealer on the threads for bolts and never seize for studs.

05-12-2014, 08:46 AM	#5
Mr_Coupe Junior Member Join Date: May 2014 Location: My Garage Posts: 18	Re: OFFENHAUSER head Sponsored Links (Register now to hide all advertisements) Great advise, I didn't know that could happen.