[AT] Slight Oil Leak

charlie hill chill8 at suddenlink.net
Wed Aug 29 14:14:07 PDT 2007


I don't think it's an expensive fix LeRoy.  Some times when oil is leaking 
things are not exactly as they appear to be. Pull off the valve cover and 
re-torque the head bolts then see what happens.

Charlie
----- Original Message ----- 
From: "LeRoy Price III" <leroy_price3 at hotmail.com>
To: <at at lists.antique-tractor.com>
Sent: Wednesday, August 29, 2007 4:45 PM
Subject: Re: [AT] Slight Oil Leak


>
> It wasn't until I torqued down the manifold bolts for the leak to start in
> the area of the head to block seal.  It was alright until then.  The other
> thing is that this was OK last year when I got it back from the rebuild.
>
> Why does this give me a bad feeling and I wanted to get rid of the darn
> thing.  I gotta get out of this hobby.
>
>
>>All of the oil that is in the heads of an Allis B engine are pumped up
>>there
>>externally and into a port on the distributor side of the engine.  From
>>there the oil flows though a channel in the head casting and up through 
>>one
>>of the rocker arm studs that is hollow.  It then runs down the inside of
>>the
>>rocker arm tube, over the valve train and then it drains back through 
>>holes
>>in the head back to the inside of the block.  There are no oil passages in
>>the head on the manifold side.
>>
>>You need to pull the valve cover, check for leaks on the valve cover
>>gasket,
>>check to see that the oil is flowing back through the head into the block
>>without ponding up in the top of the head and re-torque the head.  If you
>>don't find the problem in one of those places then you have a head gasket
>>problem, a warped head or some problem with the top of the block.  There 
>>is
>>no way that I can think of for oil to come out through the manifold stud
>>holes.  If enough oil is getting by the oil rings to get into the manifold
>>and flow out around the manifold gasket then you should be getting oil
>>blowing out of the exhaust pipe.
>>
>>Charlie
>
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