Maintenance & Technical > KX500 Original
kx500 outlaw kart motor
sandblaster:
Ok.. the 3 tracks within a 70 mile radius of me are all 4th gear only (Or some use 2nd only in their CR500's :-D ) .
I don't know anyone who is shifting at any of these tracks.
Anyhow I wouldn't abandon your center flapper if your cylinder is a 89 and newer.
Having the longer usable power curve gives you a advantage over the CR500's.
Find some heavy duty clutch springs to help keep your power on the ground and not slipping the clutch :lol:
On the vid I posted earlier, if you can get the measurements asked for on it I can calculate your compression ratio and see what cc head you should be using based on the fuel you want to run..
funkj:
Yea, just confirmed they do just a 4th gear also.His plan was to buy a spare cylinder/head and make the improvements and then change it over. Until he pulls the trigger im just preparing. look
sandblaster:
Cool... 8-)
1901306708:
--- Quote from: funkj on June 02, 2018, 01:57:44 AM ---1901306708
Re read your comment and see where you where going and the importance of port shape and efficacy regarding blowdown and duration not being the only important factor.
It does raise the question if a guy left the center valve at what point can you modify it and know where you have achieved the most efficient usefulness on both ends. Good old fashion R&D.lol
--- End quote ---
correct, i am saying in my findings, the shape of that top edge is more important than being able to adjust only half of the top edge. talking major surgery here so it may not be what you want.
i agree with the more clearance comment. they are too tight if you are going to be working it hard.
something to also consider is that cold crankcases make significantly more power. if your coolant is above 90F you're going to be down some. its probably worth looking at what you can do to address that. ducting, larger rad, increase coolant flow rate thru the motor etc
funkj:
I think for now I'll make correction and keep the kips in tact and see where that lands us. If the kips allows a strong mid range that allows the driver to move in and through the pack /traffic over the Cr's, that's like gold.
Right now I'm waiting for the driver to make some decisions on how/when to approach this build. I'm excited to make this happen and see if there is any noticeable advantage to the Kx.
Of coarse, ifas a tuner if you find a advantage to put your driver in the front, you get to wear the Superman shirt. :lol: :lol:
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