EVO All Evo Model Discussion

Another Easy One for the Crowd

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Old Aug 27, 2025 | 05:49 PM
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From: Tejas
Default Another Easy One for the Crowd

If you were to completely assemble an Evo motor and left it without firing it up, could you reuse the gaskets if you needed to pull it down and reassemble it?
I suggested that maybe you could reuse the gaskets on the rockers but not the head gaskets, but I never have. I've always thought if you torqued the heads then you tossed them no matter what.
Thoughts.

Griz
 
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Old Aug 27, 2025 | 05:53 PM
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Depends if you used the paper gaskets or the coated metals ones. Paper ones I toss after being torqued. The coated metal ones I use a couple times.
 
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Old Aug 27, 2025 | 05:57 PM
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Originally Posted by Silentgreyfellow
Depends if you used the paper gaskets or the coated metals ones. Paper ones I toss after being torqued. The coated metal ones I use a couple times.
Yup!!
And them rubber gaskets in rockers??? I reuse!! if they are Not Pinched..visual inspection!
 
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Old Aug 27, 2025 | 09:08 PM
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Yes all MLS gaskets.. I also reuse the foam covered aluminum gaskets.. However, I always coat with Permatex Copper Coat spray..
 
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Old Aug 28, 2025 | 07:09 AM
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Originally Posted by 98hotrodfatboy
Yes all MLS gaskets.. I also reuse the foam covered aluminum gaskets.. However, I always coat with Permatex Copper Coat spray..
Quit using Copper on anything but Paper, (one side only usually) when I found the Copper Blown Off but gasket intact!!
 
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Old Aug 28, 2025 | 10:02 AM
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Originally Posted by Racepres
Quit using Copper on anything but Paper, (one side only usually) when I found the Copper Blown Off but gasket intact!!
Never had any such issues, even with 11.25:1 compression..
 
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Old Aug 28, 2025 | 11:00 AM
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Originally Posted by 98hotrodfatboy
Never had any such issues, even with 11.25:1 compression..
On Head Gaskets??? never.. Not Me thanks
at anything around 15:1+ we didn't use any Head Gasket!!
at 10:1 or so (I like to use Pump gas) Dry Head Gasket on Dead Flat surfaces!!
 

Last edited by Racepres; Aug 28, 2025 at 11:02 AM.
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Old Aug 28, 2025 | 11:09 AM
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Originally Posted by Racepres
On Head Gaskets??? never.. Not Me thanks
at anything around 15:1+ we didn't use any Head Gasket!!
at 10:1 or so (I like to use Pump gas) Dry Head Gasket on Dead Flat surfaces!!
On my shovels I’ve used copper coat both sides.. sometimes 103’s with close to 13:1… 6,000+ shifts, never blown one. I’ve never ran more than 13:1 or larger than 3 13/16 cylinders.. never ran O ring.. so my shared experience has limits. And this is with copper gaskets and extremely limited hot spots due to compulsive **** clearancing the fire ring to be about half a thousandths all the way around when torqued with crushed gasket.

Evo’s.. I’m still learning. Still kinda new to me. Only 5 total builds under my belt and a half dozen stock motors for maintenance. So can’t offer tried advice maintaining big EVO engines other than so far I havn’t had any issues with the stock Ultima supplied gaskets.
 

Last edited by Rains2much; Aug 28, 2025 at 11:16 AM.
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Old Aug 28, 2025 | 12:34 PM
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From: Tejas
Default On solid copper gaskets

I've run solid copper gaskets with copper coat on both sides on my stroker shovel. Never considered this for an Evo motor though as the bolt up and stretch of the Evo cylinders kinda makes it harder to run. My opinion only of course.

Griz
 
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Old Aug 28, 2025 | 07:38 PM
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Glad you cats have Luck with Copper Coat...Me...Never again...Thanks!
 
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