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03-03-2020, 08:09 AM | #1 |
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Location: Jacksonville FL
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Flathead Re-builders....Do You
Question of the day?
Had a head gasket let go on a sort of "tired", good running flathead (pushing coolant out the back of the head). Pulled the heads and no evidence of any cracks. Having the heads checked now and IF good having them "decked". The question is.......Since the block is not getting decked......do you use any kind of "sealant" product around the water ports on the block and heads with the newer graphite head gaskets??? |
03-03-2020, 08:50 AM | #2 |
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Location: Powell, TN
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Re: Flathead Re-builders....Do You
If you used a steel or copper gasket and coated it with a sealer like "copper coat" you would not have a problem.
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03-03-2020, 11:29 AM | #3 |
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Re: Flathead Re-builders....Do You
Almost all cylinder heads show some warping and should be checked with a good straight edge. At our shop we resurface both the gasket surface of the heads, and the deck of the block on each job. With good quality head gaskets, no gasket sealer should be necessary. It is a good practice to install a good sealer to the coolant. When I was working for a Ford dealer years ago, each "authorized rebuilt" engine included a bottle of sealer.
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03-03-2020, 01:21 PM | #4 |
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Location: Lake worth Florida
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Re: Flathead Re-builders....Do You
I still spray the gasket , both sides with aluminum paint . And use a thin layer of grease on the surface . Never had any leaks and I've built dozens if not more when I was employed.
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03-03-2020, 02:25 PM | #5 |
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Location: Chester Vt
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Re: Flathead Re-builders....Do You
Torque to 45 ft 33 heat cycles. Over torquing warps the BLOCK!!
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03-03-2020, 05:58 PM | #6 | |
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Re: Flathead Re-builders....Do You
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Quote:
No. A graphite gasket ("Best" brand gaskets are a very good choice) needs no sealer.Resurfacing the heads is a VERY good idea. Terry
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"It don't take but country smarts to solve the problem" (Smokey Yunick) '41 Merc Town Sedan / 260" 8CM engine '66 Fairlane four door / "warmed up" 302 |
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03-03-2020, 06:12 PM | #7 |
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Location: McMinnville, TN
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Re: Flathead Re-builders....Do You
I use sealer on all gaskets EXCEPT the graphtite best brand gaskets. They are about as good as it gets.
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03-03-2020, 07:16 PM | #8 |
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Location: Bellingham, WA
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Re: Flathead Re-builders....Do You
Read Best Gaskets recommendations for their Graphtite head gaskets... use a sealer.
https://bestgasket.com/about-our-products/ Scroll down, it's on the right side. |
03-03-2020, 08:01 PM | #9 |
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Location: MN
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Re: Flathead Re-builders....Do You
Use a spray sealer. Not a tube.
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03-04-2020, 02:40 AM | #10 |
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Location: Southern France
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Re: Flathead Re-builders....Do You
Hylomar Blue in a aerosol can might work. flatheadmurre(member here) advised me to use it and it worked.
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03-04-2020, 07:50 AM | #11 |
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Re: Flathead Re-builders....Do You
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03-04-2020, 08:00 AM | #12 |
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Re: Flathead Re-builders....Do You
I think OlīRon means 3 heat cycles...computer hickup...
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03-04-2020, 09:14 AM | #13 |
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Re: Flathead Re-builders....Do You
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03-04-2020, 10:08 AM | #14 |
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Location: Chester Vt
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Re: Flathead Re-builders....Do You
I can't see the screen sometimes. Probably won't be able to do this much longer.
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03-04-2020, 10:20 AM | #15 |
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Re: Flathead Re-builders....Do You
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03-04-2020, 08:06 PM | #16 |
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Re: Flathead Re-builders....Do You
Thanks JS
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03-04-2020, 08:13 PM | #17 |
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Re: Flathead Re-builders....Do You
Hey hey......If Ron wants to check it 33 times, the torque will most-assuredly be precisely ON THE MONEY! DD |
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