Whizzer Black Knight Special Edition

btf331 · #1 (**permalink**) 12-03-2008, 03:23 PM

Hey guys just saying hello new to the site. I own a Whizzer Black Knight Edition, got it up to 35 but takes a while. Just Wondering how to make it a lil faster if any one has any ideas. I allready took out the baffel helped a lil. Ill post some pics of this bike its very rare and very fun.

Fossil · #2 (**permalink**) 12-03-2008, 06:06 PM

What year is this bike? You must be very careful about how you modify any Whizzer motor between 1999 and late 2004. The WC1 engine has a bad habit of loosing the valve seats when modified. The WC1 does not like the extra heat generated by modifications. The NE5 on the other hand does well when modified. (2005 on up) Now that we have that straight.
When you say baffle do you mean the exhaust baffle or the restrictor plate behind the carb? If your talking about the restrictor, put it back in. You can open it up to match the intake but it is needed to help keep the heat down in the carb. This is very important. Another thing you can do is advance the cam one tooth. Tilt the bike over to about 45 degrees and take the side plate off. It may be easier just to drain the oil but tilting the bike keeps you from having to do that. Rotate the crank until the dots line up on the crank and the cam. Move the cam one tooth counter clockwise and reassemble. Sometimes the cam comes out with the cover when it is removed. It is very simple to put back together just make sure the lifters stay in place. Good luck and let us know how you make out.
Jim

btf331 · #3 (**permalink**) 12-04-2008, 04:21 PM

And how do i do this... But yes i removed just the exhaust baffel.

Fossil · #4 (**permalink**) 12-04-2008, 04:32 PM

I need to know what year so I give you the correct info.

btf331 · #5 (**permalink**) 12-04-2008, 04:51 PM

scared to say its a 2000

btf331 · #6 (**permalink**) 12-04-2008, 04:51 PM

by any chance fossil do you have AIM

Fossil · #7 (**permalink**) 12-04-2008, 04:57 PM

Yahoo not Aim

btf331 · #8 (**permalink**) 12-04-2008, 04:57 PM

by any chance fossil do you have AIM

btf331 · #9 (**permalink**) 12-04-2008, 05:02 PM

yahoo can u use msn?

Fossil · #10 (**permalink**) 12-04-2008, 05:10 PM

You must be careful modifing a WC1 engine. The exhaust valve seat will seperate from the cylinder after about 300 to 400 miles if you open up the intake. Maybe sooner or later but it will happen. The added power generates too much heat. I will tell you how to do it but it will be at your own risk. I would look for an upgrade kit for the engine. The big difference is the cylinder and the way the valve seats are cast into the alunminum block. It also has more and larger cooling fins. The original piston and rings will work but the cylinder and head must be changed to eliminate the problem. Quenton Guenther is a guru with Whizzer engines and he posts here on the forum. He may be able to get a cylinder and head for you.
Good luck
Jim

PS My Whizzer is an upgraded 2000 WC1 and it runs very well after being upgraded. I am a big guy and it pulls me around very well.