I have a cast iron 4 bolt Linkert manifold that is just short of 3 1/4" wide that is drilled and tapped for a slotted plug. It has the raised casting number 428 401. Is this original? Or somebody's home modification?
VPH-D
VPH-D
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VPH-D!
It was much too popular of a booger, on Indians as well as H-Ds. Perhaps it was for squirting starting fuel, which indicates problems may extend beyond the manifold.
They nearly always leak under a bubble-test, and I encourage you to leave no stone unturned.
....CottenAMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find! -
Most of those plugs replaced an aftermarket pop off valve that went bad.Be sure to visit;
http://www.vintageamericanmotorcycles.com/main.php
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Also be sure to visit http://www.caimag.com/forum/Comment
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