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03-20-2021, 09:11 PM | #1 |
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Best graphite thickness
Hi guys sent an email to Best but I don't think they'll get back too me quick. Does anyone know the compressed thickness of their graphtite 507 head gaskets? Also any prep for them on install?
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03-20-2021, 11:27 PM | #2 |
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Re: Best graphite thickness
Rob, I can't answer your question...these things disintegrate upon removing the head[s]....That is why, when I build an engine, i fit the heads with no gaskets in place and rotate engine at least two complete revolutions. If there is no contact, you can be pretty well assured of at least .040" clearance with gaskets torqued down.
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03-21-2021, 05:54 AM | #3 |
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Re: Best graphite thickness
BEST head gaskets compress down to about .050 to.053”. Slightly more with the copper clad type (ie perhaps another 2 or 3 thou).
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03-21-2021, 06:17 AM | #4 |
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Re: Best graphite thickness
I wrote to them before I used them and they suggested that I spray both sides with copper spray.
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03-21-2021, 06:49 AM | #5 | |
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Re: Best graphite thickness
Quote:
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03-21-2021, 08:17 AM | #6 |
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Re: Best graphite thickness
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Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
03-21-2021, 04:56 PM | #7 |
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Re: Best graphite thickness
Right here... https://bestgasket.com/head-gasket-bore-thickness/
Or here... https://bestgasket.com/ford-big-bore/ |
03-21-2021, 05:34 PM | #8 |
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Re: Best graphite thickness
Ronnie, thats good info', I took a set of copper ones off the other week that had only been on for a few hundred miles,I had sprayed them with c/coat all over, and thought about just around the coolant holes would have been easier.
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03-21-2021, 07:06 PM | #9 | |
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Re: Best graphite thickness
Quote:
Anyway Best did get back too me , which I didnt expect over the weekend and this is what came back : Hello Thank you for you purchase of our 507G Head Gaskets The compressed thickness is .053+/-.002” We recommend a copper coat spray such as K&W or Permatex on both sides of the gasket.
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03-22-2021, 02:57 PM | #10 |
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Re: Best graphite thickness
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03-22-2021, 04:06 PM | #11 | |
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Re: Best graphite thickness
Quote:
Also, once they have been compressed, I do not use them again - as I'm not confident they will seal again. To me, the amount of time/effort it takes to disassemble, clean and reassemble the heads - doesn't make any sense to gamble as to whether or not the head gaskets will seal - so I always use new ones (regardless of type). The only place I don't is on solid dead-soft copper gaskets (race applications) . . . where sometimes I will anneal them and reuse them. |
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03-22-2021, 10:12 PM | #12 |
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Re: Best graphite thickness
I've been re using them for years, if there not damaged
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03-24-2021, 06:10 AM | #13 |
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Re: Best graphite thickness
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03-24-2021, 05:20 PM | #14 |
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Re: Best graphite thickness
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03-24-2021, 06:29 PM | #15 |
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Re: Best graphite thickness
Good to hear it as well. I've got a bunch hanging on nails in my shop ceiling because I just couldn't bring myself to throw them out.
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03-24-2021, 09:29 PM | #16 |
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Re: Best graphite thickness
I always reuse the copper clad type gaskets on the same engine block and heads they came off. Heck I have even reused the older type steel clad gaskets as well same way as above.
The gaskets seal perfectly when I use silver spray paint {3 light coats per side} on the gasket surfaces and a small amount of silicone sealer around the wafer holes on the block deck and the head surface areas. Ronnieroadster
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I use the F word a lot no not that word these words Flathead , Focus and Finish. "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block" Owner , Builder, Driver of the First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 in one and a half miles burning gasoline. First ever gas burning Ford flathead powered roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH |
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