Hi Mdross1,
You might want to reconsider altering the earlier WC-1 motor. The valve seats are pressed in and most [99%] will come loose if the motor is over heated, in fact most will come loose anyway. The average distance of a modified WC-1 motor is approx 400 miles [I managed to destroy at least 50 cylinders via modifications].
I have heard rumors that a few have managed over 1000 miles on a completely stock motor, but have never really seen this.
I have spent thousands of dollars trying to make the seats stay in the WC-1 motor and it just can't be done for a reasonable price. The problem is centered around poor aluminum and the expansion rates between the hard seats and the pourous aluminum.
Your biggest concern will be locating the parts needed to upgrade your motor. As each day passes the parts to upgrade the WC-1 motor are harder to locate. And sadly some of the parts offered by some companies to upgrade the motor are very expensive and poor quality.
Whizzer USA offered a kit, called the NE upgrade cylinder kit, but I think they are completely out of stock. When they have the kits the price was $466.15 and included several parts that were problematic. The kit contains a larger 22 MM carburetor which is too big for a WC-1 motor with the stock camshaft. The kit also includes an exhaust manifold but it doesn't fit the stock exhaust pipe because the later pipe is larger. The kit also includes a piston & rings, but isn't needed because the original piston & rings can't be worn out with such low mileage.
I offered a special kit for the last several years and included special spacers & adapters to make the parts work correctly together. The kit I supplied included a hand made aluminum spacer for the exhaust manifold, a special set of studs to allow the use of the original carburetor. My kit also includes a modified cylinder that is ported, decked, valve seats re-cut, valves lapped, liquid tested, painted with special black heat paint. The head is milled, the combustion chamber re-worked, and the head bolts cut to fit. My kit also included all the gaskets & bolts needed and a copper head gasket.
I may have enough parts to make one or two more kits, but my supply is basically gone.
If I can make any additional kits the price is $375.00 plus shipping, and the kit will make your Whizzer very powerful and bullet proof, as many have thousands of miles on the kits so far. I have 2 personal bikes with over 6000 miles each and I run them very hard [both hold national speed records over 60 MPH].
Hope this information is helpful, and be sure to upgrade ASAP.
Have fun,
That is a $50. Savings!!!
