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Old 09-04-2012, 09:40 AM   #61
Navin
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I've got a 07 SXF450 frame in NJ if anyone is looking, assorted pieces to assemble too sub, axels, tanks, etc..
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Old 09-05-2012, 04:00 AM   #62
jar944 OP
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The Oct issue of dirt rider magazine profiles a KTM cr500 hybrid.
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Old 09-11-2012, 02:23 PM   #63
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Can a guy buy some spacers for the swing arm/cr500 motor ?

I am looking to convert my ktm 2008 250 xcw into a cr500 powerplant as well...what airboot works?
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Old 09-11-2012, 08:05 PM   #64
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Quote:
Originally Posted by lessongeo View Post
Can a guy buy some spacers for the swing arm/cr500 motor ?

I am looking to convert my ktm 2008 250 xcw into a cr500 powerplant as well...what airboot works?
Typically you need to find someone with a lathe or find a fab shop.

Your stock 2t air boot is the correct one.
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Old 09-11-2012, 08:35 PM   #65
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cool thanks. Wish me luck...I will start posting pics and start a thread once the powerplant hits my garage.

I started the teardown tonight.

Hell, there's no replacement for displacement.
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Old 09-12-2012, 09:13 AM   #66
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Ride report or a video is in order!
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Old 09-24-2012, 10:02 AM   #67
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Went climbing this weekend. It was the first time riding this bike since June.

I was having detonation issues last time out and cut the head to try eliminate the issue (on pump) It may have helped a bit but by the 3rd hill I was pinging again. I switched to 50/50 94/100LL and it stopped.

The decomp was sticking partially open (from the cable setup) It looks like I need to rethink the routing and attachment.

Jetting was off, rich pilot, lean needle (diameter) made a really rough transition at low throttle openings. The DGN does not work on my bike.

The kicker is killing my foot. 90% of the time I slam the top of my foot into the peg. i machined up a spare spline/pivot to accept the ktm kicker, but w/o the decomp there is no way you are kicking it over. a gen5 crf450 kicker was suggested as a possible option, I'll have to look into it more.
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Old 09-24-2012, 10:03 AM   #68
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Quote:
Originally Posted by Navin View Post
I've got a 07 SXF450 frame in NJ if anyone is looking, assorted pieces to assemble too sub, axels, tanks, etc..
Old3?
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Old 09-25-2012, 01:10 AM   #69
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How do you think this compares to the 440 conversion they do on the 250sx?

Reino screwed with this post 09-25-2012 at 01:23 AM
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Old 09-25-2012, 04:40 AM   #70
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How do you think this compares to the 440 conversion they do on the 250sx?
The 440 likely makes more power, but Big-Dog had somewhere around 5K in the engine alone to get there. Then if you break something, trash the cases/cylinder/crank you are paying $$$$ for custom parts again.

http://ktmtalk.com/index.php?showtopic=393440
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Old 09-25-2012, 06:40 AM   #71
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Quote:
Originally Posted by jar944 View Post
The 440 likely makes more power, but Big-Dog had somewhere around 5K in the engine alone to get there. Then if you break something, trash the cases/cylinder/crank you are paying $$$$ for custom parts again.

http://ktmtalk.com/index.php?showtopic=393440

Jip i looked at that thread a long while ago, The biggest i would go is 300 with my ktm and i cant do the cr500 conversion parts and motor are not really available here. i think there are a total of 5 or 7 cr500 in my country. Its a bummer.
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Old 09-25-2012, 06:48 AM   #72
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Originally Posted by Reino View Post
Jip i looked at that thread a long while ago, The biggest i would go is 300 with my ktm and i cant do the cr500 conversion parts and motor are not really available here. i think there are a total of 5 or 7 cr500 in my country. Its a bummer.
His conversion was based on 250 cases and a 380 crank and top end.

a straight 380 swap is easier and cheaper
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Old 09-25-2012, 07:06 AM   #73
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Quote:
Originally Posted by jar944 View Post
His conversion was based on 250 cases and a 380 crank and top end.

a straight 380 swap is easier and cheaper
Jip i agree, if he wanted something Big bore he should have got the 380 engine and bored it out to get that extra 20cc. Than he would have an 400 2t, not a 440 but close.

I wish i could get my grimy hands on a 380 engine, but i have never seen one in person and i don't thing there is one in my country.

I had the chance one an 1999 cr500 for 3500 usd, but decided agents it and got an 250sx instead. I didn't want my parents to worry about me on the cr.
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Old 09-25-2012, 06:06 PM   #74
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Saturdays ride on the hybrid:

http://www.youtube.com/watch?v=f4YlzA6ksww
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Old 09-25-2012, 07:32 PM   #75
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Thanks for posting the vid, was great to watch. Looks like it works pretty good.
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