Alternative Motorcycle Repair

Shipping Address via Priority Mail 
PO Box 820 
Sahuarita  AZ  85629-0820


Anti-Wet Sump Upgrade for

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Since acquiring the tooling and fixtures of "Nortec"  we now offer the

 Anti-wet sump valve upgrade for Norton twins, 500 thru 850!

This involves the installation of a check ball in the timing cover at the point at which the oil pump feed bush contacts the cover.

This essentially prevents oil from passing through the gears of the pump and draining the oil tank into the engine sump while the bike is parked, a common problem on all Norton twins.

Additionally, two o-ring seals are installed inside the pump to prevent oil from passing between the feed and return sides which also can contribute to wetsumping. 

The charge for this service is $80 plus shipping.

This includes machine work, check ball and spring and a special oil pump feed bush seal, as well as the internal pump seals.

What we will need is your timing cover, and oil pump, in reasonably clean condition.  The pump will be disassembled, inspected for excessive wear or damage, machined for the o-ring seals and reassembled.  The cover will be machined for the check-ball installation.  On Mk III models, please include the existing check valve spring, unless you want to by a new one. 

Turn around time is two weeks. This does NOT include shipping time.

Method of payment can be credit/debit card, PayPal or money order, PayPal prefered.  The total will be determined after work is completed and return shipping calculated.  We appreciate it if would indicate your method of payment along with your basic list of contact info and shipping address.

*We also recommend that the timing cover crankshaft and  camshaft seals be replaced at the same time, along with a new pump gasket.  We also offer all related gaskets and seals for sale.  Please include your list of added parts with your shipment, or by email.