Head Stug Leakage
 

Freshly rebuilt late 40's, crab cap flathead.
New head studs, washers and nuts that hold down Edmunds Aluminum Finned Heads.
I have broken in the engine and re-torqued the heads.

There seems to be a bit of coolant escaping from one head bolt on each side.
What is the recommended trick to close up the leak?
Maybe roll a rubber o-ring or two down the stud?

Thanks

Re: Head Stug Leakage
 

Some of the head studs require sealant as they go into the water jacket. Were they sealed properly when they were installed? Don't think you want to be messing with o-rings and don't think that would work anyway.

Re: Head Stug Leakage
 

Just drive it for a while .It will most likely stop . mine did.

Re: Head Stug Leakage
 

I agree .Have had the odd one leak but seem to seal after some use.Of course they should have been better sealed initially.Geoff

Re: Head Stug Leakage
 

Ha! Had same problem put teflon tape on the stud into the block and Permatex under the washer and threads where the head nut is. Of course had to call wife into garage to put finger on hole of head to keep water and anti-freeze from pouring all over the place. Seemed to rectify leak so far.

Re: Head Stug Leakage
 

As they say they usually seal up but some are stinkers, I remove the nut smear RTV on the stud and torque the nut back on. Walt

Re: Head Stug Leakage
 

http://barsleaks.com/product/radiato...-leak-tablets/

Or remove the studs one at a time and seal with permatex
http://www.permatex.com/products-2/p...-liquid-detail

R

Re: Head Stug Leakage
 

Forget the o ring idea , very much doubt it will help at all. Best idea is to pull the suspect stud out ,thoroughly dry out the offending holes slather the very clean stud and hole with loctite #3 non hardening sealer .and as an extra help you could grind up a seal well block and add it to boiling water to dissolve it and then add it to a warm radiator to allow it to circulate.