Maintenance & Technical > KX500 Steel Frame Conversion (SFC)
KX500PF
cutting torch:
--- Quote from: skippyhenry on April 25, 2010, 03:41:25 PM ---hay mate am also doing a 1992 sf conversion with a1989 kx 500 motor.Ive stuck the motor in its a very tight fit just got to change carb boot.Theres not much room between the frame and shock so am hoping there wont be any restrictions :-D
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I'm sure that's one of those snags that I'll run into down the road, along with many others I'm sure..... :|
torch
cutting torch:
--- Quote from: ToomanyKaws on April 26, 2010, 04:37:26 AM ---I admire the enginuity and projects guys do on this site and share their info. Its cool.
Question on the Rekluse though. Having talked to a lot of desert racers from the 1990's who ran 500's. Many have said the Rekluse is a little hard on the tranny. Due to the TQ the engine puts out. Often wondered about running one. Ride with a lot of guys who use them in other brands of bikes. I myself like a standard clutch. But if I rode in the woods a lot my thinking would probably change.
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I would like to hear those guys give a real world explanation of how an auto clutch could hurt the tranny. I would bet that they couldn't!
The auto slips the clutch as the engine comes up to the full engagement rpm of the clutch, after full engagement rpm, it is fully engaged (no slippage). The difference is that the auto does the slipping much more consistently and predictably than your left hand. The Rekluse site explains it in much more detail.
I'm wondering if the guys that told you this were under the impression that the auto clutch works like a torque converter in an automatic transmission. It does not.
You CAN ruin your clutch with one, though. You won't if you ride in the right gear for the speed you are going, which I would guess that 99.9% of us already know how to do! :-D
torch
cutting torch:
--- Quote from: don46 on April 26, 2010, 05:01:12 AM ---
--- Quote from: cutting torch on April 23, 2010, 02:33:12 PM ---
. The engine donor bike was an '87 KX500, but I have since gotten enough stuff to make the engine an '89 to '04.
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How do you get enough stuff to make the engine an 89 to 04? did you get newer cases? if not it would be very difficult to make 87 cases fit the 89 cylinder.
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I got cases, jug, and head.
The '94 jug I have slides right onto the '87 cases, however, there is no provision on the older case for the PV idler gear on the newer jug. No huge deal to weld up and machine that area, but my '87 cases needed more work than just that as far as welding repairs, so I just decided it was easier to get newer cases.
After I got the jug, I learned that there was more difference between the old and new head than just the bolt-on water outlet..... The bolt pattern! DOH!!
Oh, well. I now have a new head that is currently being molested. :evil:
torch
cutting torch:
Now you see it:
Now you don't:
How I got there:
The above work was the roughing in part, and I got to the after part with a die grinder. I'm going to sand blast the area soon to try to make it look like the as-cast surface of the rest of the head. My goal is to make it look like the factory cast it that way (without the rear headstay).
torch
ZETTNORCAL:
I am a little confused to why you have to use a front headstay? Is it so you can get the engine in and out of the frame with the head still on? is it just because that is how the frame was set up for the 250 two strokes? Is it because the bottom rear of the fuel tank will not allow the use of the rear mount headstay? I would think that it would be much easier to just fab a mounting location for the rear mount. On my KXF 250-500 conversion I just moved the rear headstay mount on the frame.
Looks good though
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