The Ford Barn

jaguar6165 · 10-30-2016, 07:34 PM

I replaced the old head with a 5.5-1 and installed a new gasket. Everything is tightened to 55lbs. I noticed some coolant pooling around the nut on the rear driver side stud. I don't see coolant in the cylinder and the exhaust doesn't look as if it's burning anything. Ran the car a few times and have tightened everything to 55lbs several times. Can I was a coolant additive to seal the gasket leak?

C26Pinelake · 10-30-2016, 07:59 PM

There is a ceramic additive available at Snyders. Worked for me. Wayne

CarlG · 10-30-2016, 08:58 PM

It happens a lot that the threads for the studs have been punched thru to the water jacket and will leak coolant thru the threads in the stud.

Take the stud out (after lowering the coolant level sufficiently) and coat the threads with some black Permatex and re-install it.

Synchro909 · 10-30-2016, 09:11 PM

When that happened to me, I simply added a little radiator stop leak - looks like ground pepper. The leak stopped in very short time and hasn't leaked again in several thousand miles. Try the simple things first.

Mitch//pa · 10-30-2016, 09:23 PM

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It will seal on its own,, just run it, and do your retorques as needed... Technician in a can is not needed

10-30-2016, 07:34 PM	#1
jaguar6165 Senior Member Join Date: May 2010 Location: Casselberry, FL Posts: 188	Odd coolant leak I replaced the old head with a 5.5-1 and installed a new gasket. Everything is tightened to 55lbs. I noticed some coolant pooling around the nut on the rear driver side stud. I don't see coolant in the cylinder and the exhaust doesn't look as if it's burning anything. Ran the car a few times and have tightened everything to 55lbs several times. Can I was a coolant additive to seal the gasket leak?

10-30-2016, 07:59 PM	#2
C26Pinelake BANNED Join Date: May 2010 Location: Michigan / Ontario border, Sarnia, Ontario. 50 miles from Detroit and 150 from Toronto. Posts: 5,800	Re: Odd coolant leak There is a ceramic additive available at Snyders. Worked for me. Wayne

10-30-2016, 08:58 PM	#3
CarlG Senior Member Join Date: Nov 2010 Location: Anchorage, Alaska Posts: 9,117	Re: Odd coolant leak It happens a lot that the threads for the studs have been punched thru to the water jacket and will leak coolant thru the threads in the stud. Take the stud out (after lowering the coolant level sufficiently) and coat the threads with some black Permatex and re-install it. __________________ Alaskan A's Antique Auto Mushers of Alaska Model A Ford Club of America Model A Restorers Club Antique Automobile Club of America Mullins Owner's Club

10-30-2016, 09:11 PM	#4
Synchro909 Senior Member Join Date: Jun 2014 Location: Melbourne, Australia Posts: 7,509	Re: Odd coolant leak When that happened to me, I simply added a little radiator stop leak - looks like ground pepper. The leak stopped in very short time and hasn't leaked again in several thousand miles. Try the simple things first. __________________ I'm part of the only ever generation with an analogue childhood and a digital adulthood.

10-30-2016, 09:23 PM	#5
Mitch//pa BANNED Join Date: May 2010 Location: Bucks County, PA Posts: 11,454	Re: Odd coolant leak Sponsored Links (Register now to hide all advertisements) It will seal on its own,, just run it, and do your retorques as needed... Technician in a can is not needed