360 valve cover gasket replacement

Studini
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360 valve cover gasket replacement

Postby Studini » Sun Nov 11, 2018 5:56 pm

Just got 32’ Fisherman and know the valve covers are leaking oil. Can the covers be removed and gaskets replaced without removing exhaust manifolds? It looks tight...

Also do you suggest cork or rubber and where would you get them from?

Thanks in advance for the help!!
88 32’ Fisherman
“Get Busy Livin”
Twin 360’s
Fairport Harbor, Ohio

Fastjeff
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Re: 360 valve cover gasket replacement

Postby Fastjeff » Sun Nov 11, 2018 7:17 pm

It can be done, but you'll need magnetic inserts in the socket to keep the bolts out of the bilge. Cork tends to compress and need retightening compared to rubber (which I prefer).

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington

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Busia
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Re: 360 valve cover gasket replacement

Postby Busia » Sun Nov 11, 2018 10:16 pm

Tighten them up first and see if they stop leaking. Everyone thinks they leak all the time, but a lot of times the oil is not from there. There is no oil pressure there so it doesn't take much to seal them.
BUSIA
located in Ketchikan, Alaska. Gods country
32 foot Marinette express. (no fly bridge)
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EWRice
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Re: 360 valve cover gasket replacement

Postby EWRice » Mon Nov 12, 2018 1:34 pm

Most manifolds will allow you to remove the valve covers but you will need a 1/4" drive ratchet, 6" extension, and either a short 7/16 socket with a universal or a 7/16 wobble socket.

Do try and tighten them first, but if they are cork they will leak again.

Felpro makes a marine specific gasket for these that if installed properly WILL NOT LEAK and the bolts will not loosen. It is a black rubberized felt material. I don't have the part number now but that is what I would use.
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1972 32' Express flybridge
"AL13"
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1963 Thompson Super Sea Lancer
Graymarine 327
1961 Alumacraft 12'
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Studini
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Re: 360 valve cover gasket replacement

Postby Studini » Tue Nov 13, 2018 4:55 am

Thanks!! I did have the engines surveyed and the said the leak was coming from the covers so I’ll try to tighten first
88 32’ Fisherman
“Get Busy Livin”
Twin 360’s
Fairport Harbor, Ohio

Fastjeff
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Joined: Sat Jul 12, 2014 5:06 am
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Re: 360 valve cover gasket replacement

Postby Fastjeff » Tue Nov 13, 2018 7:03 am

Don't go nuts tightening those bolts! A quarter turn or less only or you can distort the metal cover.

Note that cork gaskets tend to crack over time and create a leak path.

Jeff
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington