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Re: 1974 w200 440 4 speed fuel mileage questions.
[Re: poorboy]
#1993497
01/18/16 07:12 PM
01/18/16 07:12 PM
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Joined: Jan 2010
Posts: 1,944
woodcrest, CA
magnum440d100
OP
top fuel
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OP
top fuel
Joined: Jan 2010
Posts: 1,944
woodcrest, CA
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I would replace the intake bathtub gasket. I've had more the one big block suck oil up into the intake runners from under that tin gasket, and I've had more the one leak at any one, or all 4 corners at the head to block corners when driving highway speeds or turning higher rpms. Gene Valley pan gaskets are new. I used fiber gaskets on either side of the valley pan. Only thing I can think of is one bolt wouldn't torque to spec. It torqued to 25ftlbs but would not torque above that. Hmm
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Re: 1974 w200 440 4 speed fuel mileage questions.
[Re: WO23Coronet]
#1994592
01/20/16 01:08 AM
01/20/16 01:08 AM
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Joined: Jan 2003
Posts: 10,585
Freeport IL USA
poorboy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,585
Freeport IL USA
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How do you seal the mating faces? Silicone? Yes, the blue stuff, on both sides of the head surface on the tin plate and on the block and corners of the block/head. Gene
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Re: 1974 w200 440 4 speed fuel mileage questions.
[Re: WO23Coronet]
#1994812
01/20/16 12:21 PM
01/20/16 12:21 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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How do you seal the mating faces? Silicone? I only use silicone under the front and real valley pan hold downs. Under the intake flanges I just mask them off and spray them with the copper gasket spray.
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