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Old 05-12-2010, 06:58 AM   #81
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1974 20' Argosy 20
Richmond , Kentucky
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Glen,

I don't know which gaskets are being used. The engine is a crate engine installed by the previous owner. I do have a lot of the receipts from that rebuild and if I can find the time I'll dig through to see if the gaskets were spelled out. Since it was a crate engine I would think the header gaskets would have been purchased separately instead of in a kit.

I don't know if the Banks headers have heavy flanges or not. To be honest this has been an area where I haven't had to worry about anything because it just seems to work/seal just fine.

However on our Argosy engine installation that is something I DO have to worry about so information like you provided is priceless

Brad
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Old 05-12-2010, 07:15 AM   #82
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1984 28' Funeral Coach
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Brad, as you're into racing how about milling both the heads and the header flanges to the same degree. When mated like that they almost don't need a gasket if they are similar metals with expansion rates equal.

The operative word is "almost" so don't go there with a big old 454.
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Old 05-22-2010, 11:55 AM   #83
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1993 33' Land Yacht
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This is changing the subject a little, still talking about the 454 engine though. My engine starts well, has powerful acceleration no missing,sounds great going down the road. My problem is after a short warm up when stopped or at creeping speed ,it goes into a repetitive surging idle. Very annoying, any suggestions as to what might be causing this? I was thinking possibly the carburetor. Anyone else experienced anything similar or have any idea what would be causing this problem during these particular times?
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Old 05-22-2010, 11:48 PM   #84
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1983 31' Airstream310
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Almost sounds like fuel starvation, how's the filters - one between tank and engine, midships there abouts, and one at the connection of the Qjet - assuming of course you have one!

If your injected.... there are a miriad of sensors to go through, not least that that looks for cold start and mixture (Lamba?)
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Old 05-23-2010, 12:51 PM   #85
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If not fuel supply volume and pressure, possible air leaking into line. Next would be, if it has spring loaded weights in the distributor, they could be sticking.
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