Cascade Crew

83Z28BlackBetty · Posted: Sun Jan 15, 2012 12:15 pm Post subject: crank hub repair sleeve

Hey guys, i've been battling a oil leak on the front of the motor ever since the LT1 swap. I first thought it was the oil pan gasket, and replaced it last weekend. Second, i thought it was the water pump drive or the opti seals. I replaced those last night and i'm still dumping oil...

I pulled the crank hub to replace that seal and found 2 small grooves on the hub. I tried to smooth them out a little but with some emery cloth and replaced the seal but it is still pouring oil out when rpm's rise.

I am now faced with 2 choices, either replace the entire hub or just get a repair sleeve. Has anyone used these before? since i can get a repair sleeve for about 10 bucks i'm leaning towards getting one and trying it out but if its just a band-aid fix for a month before i start leaking again i'll save the time and money.

~JAKE

chevymad · Posted: Sun Jan 15, 2012 12:40 pm Post subject:

Repair sleeve is a permanent fix if the rest of the hub is in good shape.

91RSVert · Posted: Sun Jan 15, 2012 12:43 pm Post subject:

I would say it would depend on how big the grove is in the hub. If its just a little bit, the sleeve should fix it.

If its a big grove, time for a new hub.

I would try sliding a sleeve on that hub before you put it together and see if it fixes it.

chevymad · Posted: Sun Jan 15, 2012 12:48 pm Post subject:

Why would the size of the groove make any difference at all? The sleeve completely covers it.

91RSVert · Posted: Sun Jan 15, 2012 1:02 pm Post subject:

I guess I'm thinking about a different part?

I'm thinking hes calling his crank harmonic balancer a "hub"?

iansane · Posted: Sun Jan 15, 2012 1:25 pm Post subject:

chevymad · Posted: Sun Jan 15, 2012 1:25 pm Post subject:

Thats what i'm thinking too. The groove a seal will cut into the hub no matter how deep wont affect structural strength. So putting a stainless sleeve over it should be a permanent repair.

83Z28BlackBetty · Posted: Sun Jan 15, 2012 5:54 pm Post subject:

sounds like a plan, as long as it doesn't start leaking between the sleeve and the hub. I'm going to try one out tomorrow after work.

~JAKE

chevymad · Posted: Sun Jan 15, 2012 6:29 pm Post subject:

There should be a tube of loctite sleeve retainer to keep that from happening. Besides that.. they fit tight.