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Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Thu Mar 29, 2018 7:45 pm
by 60something
I was looking at the ORV laws for Michigan state ORV trails and here is the noise standard (besides requiring a spark arrestor):
"Exhaust noise must not exceed 99 dB(A)—or 94 dB(A) on
vehicles manufactured after January 1, 1986—when tested
according to the provisions of the SAE J1287 test."
Never gave it a second thought on the KDXs, but I'm a bit concerned about the K5.
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Fri Mar 30, 2018 12:04 am
by Sandblaster
We have noise and arrestor laws here in Oregon.
I have never had a issue as the KX500 has a lower tone then smaller bikes.
Guys get pulled over left and right to be tested and I ride by in a high gear and low throttle.
I've only gotten one look as I went by but I think it is because my bike looks so good
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon Apr 30, 2018 12:33 pm
by BigTerry
Couldn't help but notice a lack of updates on this way cool build. For a month. Here and on Vital. MXA issue a cease & desist ? I get it I guess, if so Mike. Could we get a sneek peek please ?
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon Apr 30, 2018 2:29 pm
by Sandblaster
Lol... No, nothing like that.
I'm waiting for some parts so I can move forward.
I've been designing, redesigning, welding, machining, rewelding, remachining, ect the Guru valves.
Turns out they were a bit more difficult then I intended.
But I have made significant progress on them and I believe after I pick them up this week I can hand work the final machine work and test them out.
Before I install them in my KTX I will be testing them in my Sand bike to be sure they operate as intended and with some reliability.
Once proven I will take the top end off and swap it into the KTX.
As soon as the pipe gets here... hopefully this week, I can do a final mock up... take some pics.... then if everything fits good I can disassemble and send the frame off to the powder coater for some Kiwi green and clear coat
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon Apr 30, 2018 2:52 pm
by BigTerry
Thanks Mike
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon May 14, 2018 4:15 am
by Sandblaster
I finally got my Cerakote gear set up and decided to try some color.
So what better part to try it on then my back up 2 piece clutch cover...
- 20180512_164313.jpg (328.92 KiB) Viewed 11359 times
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon May 14, 2018 4:19 am
by Sandblaster
As soon as it cooled off enough... I had to see....
- 20180512_212039.jpg (345.79 KiB) Viewed 11358 times
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon Jun 04, 2018 3:34 am
by Sandblaster
Since I don't think we will have the Turbo Crank figured out for the 500 in time for this build to be completed, I'm building a new crank...
- 20180530_203403.jpg (387.9 KiB) Viewed 11278 times
Getting the pre polish done..
- 20180530_205031.jpg (368.2 KiB) Viewed 11278 times
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon Jun 04, 2018 3:36 am
by Sandblaster
I'm also double checking all the fittings and clearances...
This side is tight but has just enough clearance...
- 20180529_160359.jpg (363.02 KiB) Viewed 11277 times
- 20180529_160353.jpg (339.4 KiB) Viewed 11277 times
Re: KX GURU Racing kx500 Engine in a 2016 KTM 250 SX PUMPKIN SEEDS BUILD
Posted: Mon Jun 04, 2018 3:39 am
by Sandblaster
Final checking before disassembly and powder coating..
- 20180531_075009.jpg (487.21 KiB) Viewed 11276 times
The rod is almost ready..
- 20180531_173313.jpg (298.89 KiB) Viewed 11276 times