High horsepower head gasket question

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Old Mar 20, 2018 | 03:20 PM
  #1  
Todallybuilt's Avatar
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Default High horsepower head gasket question

So I sent my ls block to CSS cnc. They will install the css, bore, and hone it. Jeff offered me 82mm 10:0:1 Arias pistons so he can bore the cylinders to match the new pistons. I will be installing this block with a build B16 head and according to him it will raise the compression to around 10.5:1. I would like to keep the compression as high as possible for this setup. What head gasket can use so that my compression does not suffer much if any? I have always stuck with oem bore sizes and would love to use oem headgasket but haven’t seen it in 82mm. Those who are running sleeved blocks or CSS blocks that are non oem bore sizes, what headgasket are guys running? Thanks
Old Mar 20, 2018 | 04:30 PM
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Chance EG's Avatar
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Default Re: High horsepower head gasket question

JE Pro Seal is good. I've also used Cometic a couple of times without issue, but I've seen some other people on here say they've had seal issues.
Old Mar 20, 2018 | 07:56 PM
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Default Re: High horsepower head gasket question

Ask the builder their opinion and go from there. Cometic offers custom gaskets though I'm not sure how long the process takes. They DO have a pretty good selection already, but, ya never know!
Old Mar 21, 2018 | 12:52 AM
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Default Re: High horsepower head gasket question

My machinist used oem headgaskets cut to 83 84 82 etc countless times.
This is the best bet imo.
Old Mar 21, 2018 | 01:44 AM
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Default Re: High horsepower head gasket question

Skip the cometic reliability issues. Golden eagle makes different bore gaskets, cut from oem headgaskets. I would go that route anything over 81.5mm
Old Mar 21, 2018 | 02:37 AM
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Default Re: High horsepower head gasket question

go with the golden eagle 82mm head gasket
Old Mar 21, 2018 | 04:02 AM
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Default Re: High horsepower head gasket question

OEM
Old Mar 21, 2018 | 10:58 AM
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Default Re: High horsepower head gasket question

Thanks guys, it seems like either JE or OEM is the way to go.
Old Mar 22, 2018 | 07:35 AM
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Default Re: High horsepower head gasket question

OEM and Golden Eagle (machined OEM) for 83/84mm setups
Old May 24, 2018 | 11:14 PM
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hatch22ajdm's Avatar
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Default Re: High horsepower head gasket question

I was always told that OEM is the best for performance (Seal better)
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