Sealer for leaky heads

SSDiv6 · 08-05-2008, 12:32 PM

Quote:

Originally Posted by Mike Pearson

I am working on a set of super stock small chevy 441 heads. They are leaking water in the corners of the valve spring pockets due to cutting them out for triple springs. Anybody used a sealer that you pour into the waterjacket to seal the leaks. Any ideas?

Thanks
Mike

Try the sealer from Goodson.

http://www.goodson.com/store/templat...l.php?IID=5928

Kenny Wigington · 08-05-2008, 01:10 PM

X2 on the Goodson stuff !!

Rich Biebel · 08-06-2008, 07:03 AM

We used Devcon liquid steel. Buy it in pints. Heated it up on a hot plate so it was very liquid and poured it inside the water jacket and turned the head so the Devcon would flow to the spot where the hole was. Prop it up and let it sit overnight. We also would use the same stuff under a spring seat shim on top of the hole. It works for a while but might weap a little. We also tried some epoxy type automotive paint poured in the same way....It's real easy to pop a hole in the end spring seat pads on many SB Chevy heads. If you limit the depth of the cut with a .060" stock spring shim and put a radius on the seat cutter it helps reduce the chances of hitting water.......

08-05-2008, 01:10 PM	#2
Kenny Wigington Senior Member Join Date: Sep 2004 Location: Cumming,Ga. USA Posts: 967 Likes: 36 Liked 60 Times in 12 Posts	Re: Sealer for leaky heads X2 on the Goodson stuff !! __________________ 2894 STK

08-06-2008, 07:03 AM	#3
Rich Biebel VIP Member Join Date: Jun 2007 Location: Northern New Jersey suburbs Posts: 2,314 Likes: 25 Liked 544 Times in 213 Posts	Re: Sealer for leaky heads We used Devcon liquid steel. Buy it in pints. Heated it up on a hot plate so it was very liquid and poured it inside the water jacket and turned the head so the Devcon would flow to the spot where the hole was. Prop it up and let it sit overnight. We also would use the same stuff under a spring seat shim on top of the hole. It works for a while but might weap a little. We also tried some epoxy type automotive paint poured in the same way....It's real easy to pop a hole in the end spring seat pads on many SB Chevy heads. If you limit the depth of the cut with a .060" stock spring shim and put a radius on the seat cutter it helps reduce the chances of hitting water....... __________________ Rich Biebel S/C 1479 Stock 147R