Two Stroke Motocross

Two Stroke Motocross Forum => General Two Stroke Talk => Topic started by: jar944 on May 20, 2012, 03:23:41 AM

Title: 500Sx-r (honda ktm hybrid)
Post by: jar944 on May 20, 2012, 03:23:41 AM
from This:


to this:


The only custom parts are the frame mounts, head stay and the exhaust and even that isn't much work.

initial mockup



mock up spacers


relocated mounts:


rad fitment




motor cleanup & rebuild

before


during:





engine complete


head changed to single outlet


outlet plug


head stays


exhaust modifications

The can has a complete new core  & tubing (1.25")



Rear mount added, and stinger shortened for frame clearance.


Title: 500Sx-r (honda ktm hybrid)
Post by: JE97 on May 20, 2012, 04:09:22 AM
Bad ass man!
Title: 500Sx-r (honda ktm hybrid)
Post by: Super Trucker on May 20, 2012, 05:41:30 AM
Awesome job JAR944, it,s been years since I,ve seen a cr500 motor in another makes frame. The stinger and pipe looked like it was quite a bit of work. I made a 03 KX 125 pipe fit, on a 04 and 06 cr125, alot of bending, cutting,and pounding to make it fit. Anyway good job on the exhaust, I know it,s alot of work.
Title: 500Sx-r (honda ktm hybrid)
Post by: TotalNZ on May 20, 2012, 06:11:33 AM
Wicked build, it makes so much sense to use a KTM roller don't know why you don't see it more often.
Title: 500Sx-r (honda ktm hybrid)
Post by: scotty dog on May 20, 2012, 07:48:04 AM
Kick arse job, love it ;)
Title: 500Sx-r (honda ktm hybrid)
Post by: nom de guerre on May 20, 2012, 10:18:57 AM
Nice steely!!!
Title: 500Sx-r (honda ktm hybrid)
Post by: jar944 on May 20, 2012, 12:01:35 PM
Quote from: TotalNZ on May 20, 2012, 01:11:33 PM
Wicked build, it makes so much sense to use a KTM roller don't know why you don't see it more often.

It fits with so few mods It's almost like the chassis was made for the motor.

I built this over the span of a few months, but if you started with a running engine and had all the parts, you could knock it out in a day or two at the most.
Title: 500Sx-r (honda ktm hybrid)
Post by: twosmoke595 on May 21, 2012, 06:23:40 PM
so what year/model was the roller?
Title: 500Sx-r (honda ktm hybrid)
Post by: jar944 on May 21, 2012, 06:31:24 PM
Quote from: twosmoke595 on May 22, 2012, 01:23:40 AM
so what year/model was the roller?

To do it right you need a mix of parts

All the main parts swap between KTM models in the same generation.

07/08+ 2t rads
07/08+ 2t carb boot
07+ 450/505 sxf/xcf frame
07/08+ swingarm (all but the XC4)
07/08+ shock
04?+ 2t coil (or any 04+ coil with a 2t cap)

The easiest way to do it is go get a 08+ 2t roller and add the 4t frame.

What specifically did i use? honestly I'd have to look at the parts to see what years I grabbed of the shelf. I have a large pile of KTM parts and just picked through the pile to find what i wanted.

Title: 500Sx-r (honda ktm hybrid)
Post by: jar944 on September 04, 2012, 09:45:26 PM
Looks like a KTM/CR5 conversion made it into this month's issue of dirt rider.
Title: 500Sx-r (honda ktm hybrid)
Post by: Stusmoke on September 04, 2012, 11:22:46 PM
Color me impressed, that looks like one BFed engine but you pulled it all together, awesome work. Even Dogger would envy you :P
Title: 500Sx-r (honda ktm hybrid)
Post by: SachsGS on September 05, 2012, 05:46:00 AM
I'd be curious to see how this conversion compares to the 500 AF conversions.