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Ford 9N, 2N & 8N Discussion Forum
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rear engine seal

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BOB061

12-25-2004 13:04:58




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I have a 51 8N with the side distributor. I am starting to get a fair amount of oil dripping from the rear main seal. Is this something that can be changed by pulling the pan or do I need to pull the engine? Also should I go in with the assumption of worn bearings is the cause? still carries good oil pressure, 50+ cold and 20 hot just off idle. Just purchased over the summer and it does have some blow by and compression is at about 90. Put an electronic kit in it and it now starts great even at -2 this morning. If I go for bearings I guess I should just go all the way but would just like to slow the oil loss for now.

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Dell (WA)

12-25-2004 18:07:05




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 Re: rear engine seal in reply to BOB061, 12-25-2004 13:04:58  
Bob..... ....surprizingly enuff, the N-Engine rear rope seal is realitive bullett-proof and long-lived. It doesn't have any oil under pressure to stop, so it weeps rather than leaks.

And iff'n yer Ford's hi-tech tranny weep hole are dribblin' oil, its more likely your tranny oil is OVER-FULL and leaking out your tranny front bearing seal. $3 cheap.

Check your tranny oil level by pulling the bottom bolt outta the 6" dip-stick plate and letter drain overnite. ...now... check yer dip-stick 'cuz thats the correct level. File a mark in the tranny dip-stick for correct level.

Heres the deal, some tranny dip-sticks (supposted to be 8 inches) have slipped their stopper caps and newbies can un-intentionally OVER-FILL their tranny/hydraulic/diffy reservoir. (5-gal cap, one fill'em-up by tranny shifter) Over-fill causes tranny front seal to leak and REAR-BRAKES to leak. Not good..... ....Dell

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BOB061

12-26-2004 12:35:49




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 Re: rear engine seal in reply to Dell (WA), 12-25-2004 18:07:05  
Thanks for the help. Now knowing it's a rope seal I know how to handle it. It is definatly engine oil the tranny fluid is clean as a whistle and never goes down. The leak is black like the engine oil but was a little lighter after changing oil. Hope you all had a great Christmas!



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Bob

12-25-2004 13:31:23




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 Re: rear engine seal in reply to BOB061, 12-25-2004 13:04:58  
It's just a rope seal, and the fact it's leaking PROBABLY doesn't indicate bearing problems.

You can drop the pan, pack some extra seal material in the upper 1/2, and change the lower 1/2, and likely stop the leak.



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