[AT] stuck good on a WD 45 engine question!

[John Wilkens]

Valve seats look good.  Likely a crack inside, but where I wonder?    John



At 02:44 PM 12/11/2006, you wrote:

>I guess must be a crack in the head or one bad seat on an intake.  Doubt it
>though or you would have seen it... Paul
>
>-----Original Message-----
>From: at-bounces at lists.antique-tractor.com
>[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of John Wilkens
>Sent: Monday, December 11, 2006 3:55 PM
>To: at at lists.antique-tractor.com
>Subject: [AT] stuck good on a WD 45 engine question!
>
>
>My neighbor an I are super expert tractor mechanics :)  but we are
>stumped and need ATIS help!    Got a WD 45 with even compression at
>119 lbs and good oil rings....no blowby problem and a fresh valve job
>(superior quality of course), and a good tight head gasket.    The
>problem with this tractor is that it blows enough oil out the exhaust pipe
>to make your face greasy if your're facing a headwind.  It all seems to be
>coming from cylinders 3 and 4...which are fouling plugs.  We put valve stem
>seals on the exhaust valves, but still it blows oil and smoke out the
>exhaust pipe.  It seems to me that the only place for engine oil to get into
>the exhaust system would be
>within the head somewhere.  Question is....Where or How?   We are
>just now going out to plug the oil feed pipe to the head and run it awhile
>without oil feed to the rocker arm to see if the smoking problem changes
>any.....but even if it does....where would be the problem.....a crack
>somewhere in the head?  It is blowing too much
>oil for a hairline crack we maybe can't see.     ANY IDEAS WELCOME
>PLEASE!     John W.
>
>                     In the wide-open spaces of NE Oregon
>
>
>
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                    In the wide-open spaces of NE Oregon