360 valve cover gasket replacement

Fastjeff
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Re: 360 valve cover gasket replacement

Postby Fastjeff » Mon Feb 11, 2019 7:00 am

You don't believe in "rear main seal in a can"? Me neither. Snake oil.

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

EWRice
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Re: 360 valve cover gasket replacement

Postby EWRice » Mon Feb 11, 2019 11:54 am

In all the years I have been working on boats and equipment, there have only been a few "wonder" products that I don't condemn, and even fewer that I recomend.
The recomended:
Sea Foam (For gasoline ONLY)
Stabil Marine (the blue stuff)
Stanadyne diesel fuel treatment (this stuff is incredible. It has saved on at least 10 sets of injector changes in some bad running engines)
Lucas trans fluid addidtive (I ONLY use this in manual transmissions that require ATF and New Process transfer cases. Quiets them and gives smoother shifts.)
Muskegon Lake
1972 32' Express flybridge
"AL13"
Twin 318s
On board air & prime 920
1963 Thompson Super Sea Lancer
Graymarine 327
1961 Alumacraft 12'
'55 10hp Johnson

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bill
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Location: Grosse Ile MI

Re: 360 valve cover gasket replacement

Postby bill » Mon Feb 11, 2019 12:05 pm

BigM
I have found over the years that the large bolt holding the oil filter bracket to the engine has a tendancy to losen over time. Simply tightern this has stopped a lot of my oil leaking into the bildge. :o The next culpert is the nipple at the rear of the engine where the oil sender and alarm senders attach.
It has a tendency to crack over time. :shock:
bill
ALUMINATION
Grosse Ile MI
Located on LakeErie
37' F/B Sedan
1975
Twin 360 Chrysler Marine
Raw water cooled
Hydraulic steering both helms
USCG Master Lic. Retired

Third Owner bill

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shade2u2
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Re: 360 valve cover gasket replacement

Postby shade2u2 » Mon Feb 11, 2019 12:23 pm

I also had the oil alarm switch sender crack a cause a leak.
Easy fix & carried by Napa.
John
1986 39 Sedan w/Crusader 454 & 1.92 drive.
former - 1984 28 Express Hardtop w/single 360 1.5:1 drive (SOLD)
Ohio and Muskingum Rivers (Marietta, OH)

EWRice
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Re: 360 valve cover gasket replacement

Postby EWRice » Mon Feb 11, 2019 12:33 pm

In the last few years I have seen the internal diaphram fail on the oil pressure alarm switch and leak on alot of boats. One broke the plastic housing and pumped all the engine oil out. Cost him an engine. These have all been 1980's vintage Chrysler and Crusader engines.
Muskegon Lake
1972 32' Express flybridge
"AL13"
Twin 318s
On board air & prime 920
1963 Thompson Super Sea Lancer
Graymarine 327
1961 Alumacraft 12'
'55 10hp Johnson

jralbert
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Re: 360 valve cover gasket replacement

Postby jralbert » Mon Feb 11, 2019 3:10 pm

Those pressure and alarm switches are notorious problem spots. When mine gave out and gushed oil, I luckily happened to be looking over the engine at that moment and shut it down, savings really big repair bills and major cleanup. One of the lessons, for me, is that those things ought to be replaced every two years. They are cheap and replacement is easy.
-joel-
former owner 1988 '32 FB Sedan
Chesapeake Bay
twin 318 / 240 hp
Potomac MD

Fastjeff
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Re: 360 valve cover gasket replacement

Postby Fastjeff » Tue Feb 12, 2019 6:28 am

Agreed. I replaced an oil pressure switch a year on my old 32 footer. Used standard "idiot light" switches.

Jeff

PS: The temperature switches (for the alarm system) need to be removed and tested now and then. (Use a pan of boiling water and an ammeter to test them.) Of the four that were on mine (the original setup with twin engines) I think only one was working (and that cost me an engine). I added two more (one per exhaust manifold per engine) and tested/ replaced those that were lying to me.
"We live at the bottom of an ocean of air, not at the top." General Marvage Slatington