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Old Feb 3, 2017 | 09:27 AM
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newbie2vette
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Default Front seal
I had my 1972 LT1 motor refresh about 5k miles ago, now I see trace of oil around the front seal area. I am thinking the harmonic balancer might be an issue since I installed one of those cap over the shaft because I noticed a grove.
Is it do able to replace the front seal without taking the timing cover off. This time I got a new harmonic balancer to install, along with a new seal. Thank you.
Last edited by newbie2vette; Feb 3, 2017 at 09:28 AM.
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Old Feb 3, 2017 | 09:53 AM
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Originally Posted by newbie2vette
I had my 1972 LT1 motor refresh about 5k miles ago, now I see trace of oil around the front seal area. I am thinking the harmonic balancer might be an issue since I installed one of those cap over the shaft because I noticed a grove.
Is it do able to replace the front seal without taking the timing cover off. This time I got a new harmonic balancer to install, along with a new seal. Thank you.
It is very possible......but I recommend you make or buy a seal installer.....I made one from a block of wood.....it is just a 4x4 square piece of 2x4 with a hole augered out for the crank snout.....this allows you to get an even hit on the seal all the way around it......saves a lot of swear words The wood has "give" as to not damage the seal or cover.....

Jebby
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Old Feb 3, 2017 | 06:51 PM
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I use a short section of schedule 40 PVC pipe to put the seal back into the timing chain cover.

DUB
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Old Feb 4, 2017 | 04:32 AM
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While you are at it I would inspect the PCV valve and make sure that it is breathing. I have come across leaking front and rear mains before where the problem was a stuck PCV valve.
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Old Feb 4, 2017 | 08:44 AM
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It helps to pack the back side of the seal with grease so the garter spring doesn't get knocked out of place during installation.
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