Head Gaskets for High Compression/nitrous

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11-09-2011, 09:38 PM

#21

AChotrod

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Sounds good and I didnt know they had allen heads on them now

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11-09-2011, 09:56 PM

#22

hvyss

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Quote:

Originally Posted by AChotrod

Just curious as to what you guys are using on your higher compression nitrous motors. I didnt think the Mr G. 5716s are up to the task for a 12.4:1+ motor with a 300 shot so I ordered some Cometic .036s. I thought about the 1074s but wanted a thinner gasket.

I went with .030 cometic gaskets and gave me a quench of .035 pistons .005 in the hole. With 54cc chamber heads I ended up with 12.3 to 1

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11-09-2011, 11:04 PM

#23

AChotrod

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How is the car on pump gas? My heads are milled .030 and the pistons are dead even with the deck. So I went with the .036s over the .030s just to be safe.

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11-09-2011, 11:34 PM

#24

robsquikz28

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I rAN 250 shot with mr gaskets

but cometics for sure

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11-09-2011, 11:52 PM

#25

AChotrod

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Ive hit my Mr Gs with 200 on top of 400+ rwhp NA and so far it has been fine but Im not convinced they would live forever on the new motor.

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11-10-2011, 12:10 AM

#26

gregrob

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I'm running Cometics and studs. Havent ran it yet but its going to see a big shot.

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11-10-2011, 05:34 AM

#27

hvyss

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Quote:

Originally Posted by AChotrod

How is the car on pump gas? My heads are milled .030 and the pistons are dead even with the deck. So I went with the .036s over the .030s just to be safe.

Runs fine. No detination and have run 11.40's N/A on 93 pump gas.

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11-10-2011, 05:19 PM

#28

Puck

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Quote:

Originally Posted by AChotrod

How is the car on pump gas? My heads are milled .030 and the pistons are dead even with the deck. So I went with the .036s over the .030s just to be safe.

Honestly in that case you probably could have saved some cash and just went with the .039 Felpro 1074s. the .003 isnt going to make any measurable difference in anything.

They have been beat to hell without issue on high compression, boosted to hell, and heavily sprayed engines. The cooling holes are also revised to cool the center cylinders better.

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