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Oil is coming out of my exhaust?

I have a 1971 Shovelhead that the top end just came out of the machine shop. For some reason, the motor is using too much oil. So much, that it comes out my exhaust.Where do i find a diagram for my S&S oil pump? Please help with suggestions on the oil problem.

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If the s&s oil pump was installed during this build you need to pull it back off get a drill jig and drill a hole through the case which is tough with the motor installed but ask your parts guy he should be able to get you a kit from s&s or jims pretty sure that will solve your prob

Posted on Dec 30, 2009

  • makeitfast57 Jan 05, 2010

    if your heads fill with oil because no one drilled the bypass in the case the oil CAN and WILL find its way into the beathers thus oil in the carb &then exaust


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1) new rings put in upside down, the dot on the oil ring should be up when installed on the piston.

2) Valve guides and or valve stems are shot

Not really any other way for oil to get into the exhaust.

Posted on Aug 17, 2009

  • danellison Aug 20, 2009

    To get out the exhaust the oil HAS to come either around the rings or through the valve guides. An upside down oil ring can certainly cause this type of problem. There is a dot on the top ring. It should be UP on the piston. If not it will never seal and oil will scream past it. You should certainly see a lot of smoke when you back off the throttle as well.



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