Front Oil SEAl - Chevelle Tech
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post #1 of 8 (permalink) Old Feb 23rd, 20, 7:52 AM Thread Starter
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Front Oil SEAl

Pd a professional to stop oil leak from under timing chain cover area. He replaced front seal that rides on harmonic balancer (396).

Cure lasted a week. It was damp when I got home which I credited to him not cleaning up. What did mechanic do wrong ? He said harmonic balancer grove looked good, no scarring.
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post #2 of 8 (permalink) Old Feb 23rd, 20, 9:18 AM
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Re: Front Oil SEAl

fel pro had a bad run of crank oil seals amongst others.Get a new seal and measure it to be sure.

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post #3 of 8 (permalink) Old Feb 23rd, 20, 9:28 AM Thread Starter
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Thanks !
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post #4 of 8 (permalink) Old Feb 23rd, 20, 9:03 PM
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Re: Front Oil SEAl

Are you sure it is the seal ? Clean it off real good with some brake clean and then put some die in the oil. Run it for a while and use a black light to see where the leak is coming from for sure. Oil can get blown around and fool the best of us when trying to find a leak. I personally have not seen any bad seals from Fel Pro and that is all I will use.

Also make sure you dont have a lot of blowby forcing the oil out of the seal.

Bill Koustenis
Advanced Automotive Machine
Waldorf Md


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post #5 of 8 (permalink) Old Feb 23rd, 20, 9:58 PM Thread Starter
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I pd someone to swap it out. After a week, one drop on cardboard. I found fresh oil pushing my finger between oil pan and damper,

When seal was replaced, I cleaned up and painted front of oil pan and squirted brake clean in area to remove any residual oil.

I have PCV valve to back of carb and tall filtered vent in other valve cover. Is this sufficient ?
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post #6 of 8 (permalink) Old Feb 23rd, 20, 11:12 PM
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Tom Terrific II
 
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Re: Front Oil SEAl

>>>I have PCV valve to back of carb and tall filtered vent in other valve cover. Is this sufficient ?

Yes, unless the engine has abnormal amounts of blow-by.

engine warmed up and idling, pull the breather out put your thumb over the hole. Before long there shouid be either vacuum or pressure in that hole. vacuum = good. pressure = not so much.
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post #7 of 8 (permalink) Old Feb 24th, 20, 8:31 AM
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Re: Front Oil SEAl

You can get a speedi sleeve from Napa to press on the harmonic balancer. It'll give the seal a fresh surface to ride on and hopefully stop the leak.

*Jeff*

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post #8 of 8 (permalink) Old Feb 24th, 20, 8:35 AM Thread Starter
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Quote:
Originally Posted by Hotwire View Post
You can get a speedi sleeve from Napa to press on the harmonic balancer. It'll give the seal a fresh surface to ride on and hopefully stop the leak.
Thanks Hotwire,

I have an idea this is the problem.
So many shops have a “Just get it out and hope he doesn’t come back mentality”
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