Leaky rear main seal 96 Explorer 5.0 swap

[jsulse]

Before I installed the engine I put a new teflon rear main seal and pan gasket. It's leaking but don't know how bad. Darn! Even made sure the crank was smooth with no scratches or wear ring from previous seal.
The truck has been fired up a few times with a total of 20 mins run time while hunting down final issues.
Had a clutch go bad from leaking rear in the past.
How much leaking can I get by with? Just maybe weeping...
Is this new seal/sleeve in my future? http://www.napaonline.com/Catalog/CatalogItemDetail.aspx?R=FPGBS40619_0147513252

 

[Viperwolf1]

Are you sure it isn't a pan leak? In my experience the 1 piece seals work pretty well.

 

[70_Steve]

Did you do anything else to the engine before installing? Like... change intake manifolds? There are a couple places on the rear of the engine that can leak oil and look like a rear main seal leak.

 

[jsulse]

Will double check origin of leak.
At first glance looked to be coming from rear main. Everything is really clean so should be easy to pin point leak.
Did not replace any others gaskets other than upper intake.

 

[ransil]

I had issues with 1 piece pan gasket on the bronco oil pan, swapped oil pan to a 5.0l all is good ( this is after changing the rear main and pan gasket twice)