Re: Whats your favorite gasket sealer?,why?

Posted by Bob Kerr on July 11, 2007 at 19:32:12 from (152.163.100.197):

In Reply to: Whats your favorite gasket sealer?,why? posted by BIG RED 1 on July 11, 2007 at 07:13:32:

I almost never use RTV, unless I am working on some late model junk aluminum head car with an Iron block that the factory calls for the stuff. No need for it otherwise and when you see stuff oooze out like a blue or red worm when tightening, it is doing the same thing on the inside and that worm is just waiting to clog up oil passages or tubes in the radiator. The most important gasket sealer in your tool box should be a good scraper to get things VERY clean. I have also been known to use a file to dress up heavy machining marks. I was taught this my both my Dad and my Grandma on my Moms side. Yes Granny used to rebuild Dump truck engines when they had a gravel pit in the 30s and 40s. She said get the gasket surfaces clean enough to eat off of! Dad won a bet back in the 50s building a chevy 216 engine with NO gaskets or sealer! No leaks! it is all in the fit. He dressed the surfaces with files and carborundum stones. As for me I clean the heck out of the surfaces with the scraper and various solvents like lacquer thinner or alcohol and usually use no sealer of any kind, but if I do I use copper coat in the spray can and get nice and even coating. If I have bad pitting I use the copper coat on that too. I used aviation forma gasket on the knock out plug on the H trans for the reverse idler shaft. It is below oil level and I reused the old plug(but reworked it so it looked like a new one). I bought that small jar 25 years ago and it is still 3/4 full. Also when I do a head, I pull the studs and dress the block where the studs go into the block. Bolts are especially bad about acually raising up the cast iron around the hole and it can cause a problem. I guess I am picky but then again I only want to fix something once.

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