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1976 cadillac 500ci timing cover rust

Started by 1976Deville, July 06, 2017, 07:20:30 PM

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1976Deville

OK, just waiting for my timing chain set and then I will start to install all the part back on the engine. I hope the car will run another 500000 miles.
Can there anything be done to stop the rust between the cover and the water pump. I do not think paint will help. I thought plumbing solder an wipe it off

The Tassie Devil(le)

The rust is caused bu the lack of rust inhibitor in the water/coolant, and you could use solder to fill in the holes.

The best way would be to take it to a radiator shop and have them fill it in using their soldering methods, and then smooth out the surface to bring it back to flat, by using a belt sander but making sure that it isn't overheated.

The other thing I would be doing is to weld nuts on the back side where those little 1/4" bolts go, to reinforce these and their clamping ability.

Bruce. >:D
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'74 Chris Craft Gull Wing (SH)
'02 VX Series II Holden Commodore SS Sedan
(Past President Modified Chapter)

Past Cars of significance - to me
1935 Ford 3 Window Coupe
1936 Ford 5 Window Coupe
1937 Chevrolet Sports Coupe
1955 Chevrolet Convertible
1959 Ford Fairlane Ranch Wagon
1960 Cadillac CDV
1972 Cadillac Eldorado Coupe

1976Deville

Thanks Bruce.
Yes I did the nut welding already.
Like you mentioned (overheat ) , I am not sure how good it is to use solder. When I google it somebody used JB Weld. 

Chas

The Cad Company (cad500parts.com) makes that piece in stainless steel. I've used a couple of them over the years. If I recall correctly, they're about $100.
1967 Coupe DeVille
1970 Coupe DeVille
1976 Coupe DeVille
1983 Coupe DeVille
1977 Harley Cafe Racer
1991 Harley Fat Boy
1957 Harley Hardtail
1949 Lusse Bumper Car
If you're 25 years old and not a liberal, you have no heart. If you're 45 years old and not a conservative, you have no money!

The Tassie Devil(le)

Whatever you use, make sure that it isn't something that can fail under the heat, and expansion and contraction, and become dislodged so it can end up within the cooling system, and start blocking things up.

Bruce. >:D
'72 Eldorado Convertible (LHD)
'70 Ranchero Squire (RHD)
'74 Chris Craft Gull Wing (SH)
'02 VX Series II Holden Commodore SS Sedan
(Past President Modified Chapter)

Past Cars of significance - to me
1935 Ford 3 Window Coupe
1936 Ford 5 Window Coupe
1937 Chevrolet Sports Coupe
1955 Chevrolet Convertible
1959 Ford Fairlane Ranch Wagon
1960 Cadillac CDV
1972 Cadillac Eldorado Coupe

bcroe

Quote from: Chas
The Cad Company (cad500parts.com) makes that piece in stainless steel. I've used a couple of them over the years. If I recall correctly, they're about $100. 

A lot of SS gets used here.  For $100 I wouldn't waste any more time on
the original.  Bruce Roe

Glen

Read post 3 and 4 in this thread. 
http://forums.cadillaclasalleclub.org/index.php?topic=145874.0
SS is a noble medal and the rest of the iron engine block becomes the sacrificial material.  Same happens when you use brass freeze plugs. 
Nothing is simple.           
Glen Houlton CLC #727 
CLCMRC benefactor #104

bcroe

Quote from: Glen
SS is a noble medal and the rest of the iron engine block becomes
the sacrificial material.  Same happens when you use brass freeze plugs. 
Nothing is simple.           

Right.  How have the SS covers in service worked out?  Aluminum
intakes have been used, not great over the long term.  Bruce Roe

1976Deville

Hi Bruce
until I have the part here in Kelowna With Tax, Dollar exchange Shipping ..... I pay $200.00.
But I know what you mean
Did you worked on many Cadillac's ?
I have to read more on Glen's idea

bcroe

The exact same issue happens on my Oldsmobile engines.  So far
the damage was never in a critical spot, and not nearly bad
enough for concern.  If it really is bad here, I'd go for a replacement;
the average used plate probably wouldn't be too bad.  Should be
lots of them out there, used at least 68-79.  Bruce Roe