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Cometic gasket trim with head installed?
#3031958
04/08/22 07:22 PM
04/08/22 07:22 PM
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Joined: Mar 2006
Posts: 9,834
MI, usa
dvw
OP
master
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OP
master
Joined: Mar 2006
Posts: 9,834
MI, usa
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Figured I'd ask before I remove the heads for the 3rd time. Any way to trim the gasket while assembled? I don't see any way. Should've paid attention to 440 Jim's thread. This is the 3rd pr of Cometic's on this engine. Never had the issue before. #4 and #5 exhaust pushrods hit the center portion of the gasket that doesn't set on the deck itself. Just hangs in the breeze. Any Ideas?
Doug
Last edited by dvw; 04/08/22 07:23 PM.
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Re: Cometic gasket trim with head installed?
[Re: dodger mope]
#3031980
04/08/22 08:53 PM
04/08/22 08:53 PM
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Joined: May 2019
Posts: 712
Lake Villa Il
INTMD8
super stock
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super stock
Joined: May 2019
Posts: 712
Lake Villa Il
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Not sure how much room you have or how close you need to get to the side but possibly a knockout punch? Or as mentioned bend it (tapered drift)?
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: Cometic gasket trim with head installed?
[Re: 67_Satellite]
#3032242
04/09/22 11:16 PM
04/09/22 11:16 PM
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Joined: Mar 2003
Posts: 2,498
PA
moparacer
top fuel
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top fuel
Joined: Mar 2003
Posts: 2,498
PA
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No way would I get anywhere near that engine with a carbide burr during assembly.....  I have 7/16 pushrods and have always trimmed that center piece off that is basically useless with tin snips before I put them on Doug. Just did it tonight on mine. I think that is the spot you are referring too? Lift the pieces apart and do them separately. Just pull them back off and get out the tin snips.
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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Re: Cometic gasket trim with head installed?
[Re: Cab_Burge]
#3032432
04/10/22 07:59 PM
04/10/22 07:59 PM
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Joined: Mar 2006
Posts: 9,834
MI, usa
dvw
OP
master
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OP
master
Joined: Mar 2006
Posts: 9,834
MI, usa
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Boy am I dumb. Always think simple. Words to live by. I should pay attention to my own words. This is the 3rd pair of Cometics I've used in this motor. Never had an issue before. Pulled the heads trimmed the gaskets. Clamped the gaskets between two pieces of wood and cut off the excess. Deburred all 5 layers. The stainless center layer is tough. The piece I cut off looked symmetrical. Humm? Cleaned off the RTV from the valley plate. Relubed all the studs. Reinstalled and torqued the heads. Number 5 pushrod still looked odd. upon looking further I see the issue. The motor has off set cups in the intake lifters. I had the #5 lifter pair rotated around with the exhaust and intake lifters swapped. Getting old. Should have investigated further. Anyway is all together except the pan and oil pump.
Doug
Last edited by dvw; 04/10/22 08:00 PM.
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Re: Cometic gasket trim with head installed?
[Re: dvw]
#3032436
04/10/22 08:10 PM
04/10/22 08:10 PM
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Joined: Aug 2003
Posts: 43,157
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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I've never made any mistakes  That I didn't regret later  Your still human  Glad you caught it
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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