Maintenance & Technical > KX500 Original
640cc KX
kawman:
This is the contact info. :idea:
John Boschma
B&B Racing
tecate and 2 stroke specialist
14847 Misty Meadow ln.
So.Beloit IL. 61080 U.S.A.
1-815-389-4945
1-608-201-2980
1-608-346-4945
bandbracing@charter.net
crazyryan:
I've got a 595cc combo. Still assembling tho. Ya it's stroked.
doordie:
crazyryan,
what pipe do you use to that big bore?
Fatty?
I think you need big volume pipes! :wink:
And I know you run Lectron 44 mm,what about that carb?
I thinking to buy one from a snowmobile and try if it?s
better than my ovalbored pwk 39,5mm. :twisted:
What settings for that carb is a good start?(needle...?) :wink:
Have you dynotested your bike?
//doordie
crazyryan:
In 2003 I put a 540cc kit on the bike which included mild porting, shaved head and a new intake set-up. I used a rad valve, lectron, and K&N. I later added a intake spacer. I ran a Pro-Circuit Plat. I also cut 6'' off the Pro-Circuit silencer to cut down on restriction. That worked get! I started with a 5-1 needle. I blew the top end in an hour, I was in a hurry and didn't have time to tune before my first hillclimb. Then I rebuilt the top and switched to a 6-1 needle. With a few days to tune I got it right. Then I was able to race 10 more races problem free. The carb was expensive, but way worth it. At the end of that season I did end up running it out of gas. That wasn't pretty. I came across a crank shop ad in a mag. that claimed to beable to stroke cranks. I hadn't ever heard of stroked 2's. I called and the guy said he could balance and stroke mine. That was the beginning of a huge equation to figure out how to finish the motor once we had it done. My builder accepted the project under one circumstance. I buy a Digritron E.G.T., so we tune this monster one built. The motor is done, but hasn't been fired yet do to exhaust. I've talked to three pipe builders and they all want the bike to build it. They'll all in California, a couple thousand miles away. We're going to run oxygenated fuel. We're hoping for 100h.p. If your considering a Lectron for your sled, you may consider a Digritron if your going to be in different climates and temps. That's where the Lectron pays off. Being able to turn that wonder top screw to change fuel rate instead of changing those d**n jets. I'll never change another jet again..
doordie:
crazyryan,
Thx for the info.
The carb(lectron) is from a snowmobile ,I will try it for my iceracer kx500++(86/87mm).
I run PC-desert plat too ,with heavy tuned cylinder/head and that ovalbored PWK39,5mm.
What pipebuilders do you have in mind?Jemco maybe?
If you wanna see a nice pipe,look at MUN in members list and check his website. :wink:
I run 103 oktan oxygenated fuel too. :twisted:
If your`e aiming 100hp at crank it needs commitment!Maybe nitro. :roll:
Mine it?s about 70hp at backwheel now!(80hp++ at crank) 8)
//doordie
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