Leaking pushrods

[Ty Whitaker]

I have a 79 shovel with an 88 big bore kit and an S&S oil pump. It is leaking out of the base of the rear pushrod covers at high speeds. I am thinking about new gaskets, ruber or cork? and maybe even new springs in the covers.

is there anything else i should consider?

everything else is fine....

Thanks

[nauipro]

Originally Posted by Ty Whitaker

I have a 79 shovel with an 88 big bore kit and an S&S oil pump. It is leaking out of the base of the rear pushrod covers at high speeds. I am thinking about new gaskets, ruber or cork? and maybe even new springs in the covers.

is there anything else i should consider?

everything else is fine....

Thanks

Try the blue silicone seals, and make sure that your crankcase venting is adequate. There are a few other tricks if that doesnt work out.........Bill

[L.Linkert]

Take a hold of those pusrod covers, rotate them back and forth a couple of times. That may be enough to seat the seals.

[Scooter]

They shouldn't leak at high speeds if they don't at low speeds. Sounds like a crank case pressure problem. Check for restricted or out-of-time breather.

[Ty Whitaker]

How do i know if my breather is functioning properly? it is a large diameter tube that i can blow pressure into - i can hear it exiting at the lifter blocks, but who knows what the position the breather gear is in.

[Scooter]

Well, if you can hear your breath exiting the lifter blocks (that's not much pressure!), crank case pressure is probably not the problem. Find out exactly where it's exiting, have someone spray soapy water there while you blow, and fix the leak.

[MilesToGo]

Originally Posted by Scooter

They shouldn't leak at high speeds if they don't at low speeds. Sounds like a crank case pressure problem. Check for restricted or out-of-time breather.

I don't know about this statement. I had one that was leaking at high speed and not low speed also. Turned out to be just some dirt that got under one of the o-rings. Cleaned the seal and the leak stopped.