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Topic: oil leak

in Forum: C3 General Discussion


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oil leak (1/6)
 7/16/14 11:37pm
Bags74Vette
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Joined: 6/22/2014
Posts: 46

I have an oil leak on my 1974 454.It doesn't leak until after the engine has been shut off for a couple hours or so. After I wiped it clean I checked it and found that the leak was very, very small on the very front of the oil pan inside of the flange. Is it coming from inside the pan? I put cardboard down and it takes awhile for the spot to get large. Any ideas? Thanks

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Re: oil leak (2/6)
 7/17/14 9:29am
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20126

Sounds like it could be the rubber seal between the pan, and the timing cover, or it could also be the timing cover seal around the harmonic balancer. IF it's the seal between the pan and timing cover, you might be able to slow/fix the leak by cleaning it very well, and running a small bead of silicon in the groove between the two parts. Otherwise, it's removing the pan time....
If it's the timing cover seal, you'll need to remove the balancer, and replace the seal. Thumbs Up


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Joel Adams
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Re: oil leak (3/6)
 7/17/14 10:04am
Bags74Vette
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Whats the cost of doing that?

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Re: oil leak (4/6)
 7/17/14 12:04pm
jdgrant
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HOT SPRINGS NATIONAL PARK, AR - USA

Vette(s):
1978 (25th Annv. Edition)Red, Black interior, 4-Speed Transmission, L-82, Power & Air, Very Rare Option Package(Only 145 Red 1978s with a 4 speed trans) & Very Original Car, with original Window Sticker, Bill of Sale and all documentaion.


Joined: 11/12/2003
Posts: 190

Every Chevrolet I have ever owned has leaked oil, including my 2 Vettes.

I always thought they were suppose to!Wink


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Re: oil leak (5/6)
 7/17/14 12:16pm
Bags74Vette
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Posts: 46

If its a seal in the timing chain/balancer area what would be the cost parts and labor? Thanks



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Re: oil leak (6/6)
 7/17/14 12:32pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20126

You can figure about 3 hours on labor for someone that knows how to do the job properly.
Replacing the oil pan gasket/seals is about a 4 hour deal.
The timing cover seal itself is only a few dollars, a pan gasket set a little more. Labor prices would be dependent on what shops in your area charge per hour.

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Joel Adams
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             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

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