Originally Posted by Rob94gt
I recently istalled gt40 p heads and a explorer intake and rebuilt the top end amd the front of thr motor.
it runs strong and everything is fine other than my front seal started leakin amd it's got a brand new one in it
I put grease around the rubber part that goes around the crank. And also I put a small amount of rtv on the keyway of the harmonic balancer. I only had a small amount of rtv left or I would have put more on it.
But have y'all ever had a new front seal leak on u. ? I guess I could install another one bit don't want thst one to leak also.
Is the bolt for the harmonic balancer supossed to have rtv on it to ?
If the front seal is leaking after the installation of a new seal then:
1. Wrong size front seal was used.
2. Improper installation of seal, bent or torqued out of shape.
3. Harmonic balancer snout surface the seal rides on is damaged.
If it is #3 you can buy thin repair sleeves to repair that or just replace the balancer which is probably the best idea as the rubber in old balancers breaks down and lets the outer ring slip eventually.
You should not need to put any RTV on the keyway or balancer bolt. There should be an oil slinger that goes on the crankshaft snout before the balancer to keep the oil away from there. The only thing I ever use is a bit of Blue Loctite on the bolt threads right before I torque it down to specs.