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  #11  
Old 06-21-2009, 01:05 AM
Hawkrod Hawkrod is offline
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I hate to say this but I think your buddy gave you horrible advice. Neoprene seals run fine on the knurls and when the neoprene seals came out Ford still knurled the cranks. They did not stop knurling until they started making one piece seals. Running the seal backwards will cause a leak but if the oil level is low and the knurls do there job you will only see a film of seepage until the bearings get some wear and then it will start dripping. If you run an extra quart it will usually leak from day one. Hawkrod
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  #12  
Old 06-21-2009, 05:15 AM
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scumdog scumdog is offline
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Quote:
Originally Posted by Hawkrod View Post
I hate to say this but I think your buddy gave you horrible advice. Neoprene seals run fine on the knurls and when the neoprene seals came out Ford still knurled the cranks. They did not stop knurling until they started making one piece seals. Running the seal backwards will cause a leak but if the oil level is low and the knurls do there job you will only see a film of seepage until the bearings get some wear and then it will start dripping. If you run an extra quart it will usually leak from day one. Hawkrod
I've a custom built 2 gallon sump with the 'deep' bit at the rear and even at the drags it doesn't leak, there's as much oil film around the front seal as there is the rear.

and that seal has been there for oh, I dunno, 50,000+ miles.

I guess I have minimal blow-by or crank-case pressure of any sort.

I must be lucky!!
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  #13  
Old 06-21-2009, 12:25 PM
Hawkrod Hawkrod is offline
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Yup, sounds as though you were lucky. The reality is blow by is a very big part of it and if you built the engine right and treated it right you will have experienced less bearing wear and less blowby and so tolerances remained tight and pressure did not add fuel to the fire. A well built engine will always outperform a "standard" engine in both power and how well it does what it was designed to do so they leak less oil and last much longer. Good for you for doing it right, Hawkrod
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