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Old 06-17-2013, 07:35 PM   #1
Orangecicle OP
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Orangecicle 2.0 -- the 950 "R"

Allegedly, all this makes a motorcycle. Once it's together, I'll have a 950 with a new top end that includes 990 "R" cams.



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Old 06-17-2013, 07:56 PM   #2
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I like your new front fender . . . Keep up the great Job and enjoy more power!
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Old 06-17-2013, 08:06 PM   #3
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Originally Posted by mcmann View Post
I like your new front fender . . . Keep up the great Job and enjoy more power!
For anyone who's interested, it's this fender:

http://www.ebay.com/itm/121079648244...84.m1439.l2649

It's a Polisport Supermotard model 8553500002.
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Old 06-18-2013, 08:34 PM   #4
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Motor's in!


Dang was that ever hard!
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Old 06-18-2013, 09:27 PM   #5
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Good work...

Another 80K plus to go!!!
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Old 06-19-2013, 04:38 AM   #6
BRUNO BOTELHO
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Quote:
Once it's together, I'll have a 950 with a new top end that includes 990 "R" cams.
Does the cams of the 990 R work well on the 950?
Extra power?

Just very, very curious
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Old 06-19-2013, 05:43 AM   #7
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Originally Posted by BRUNO BOTELHO View Post
Does the cams of the 990 R work well on the 950?
Extra power?

Just very, very curious
CJRacer has done this on an old 950, and he says it has worked well. Basically, the original 950 cams were not properly heat treated, and the cams eventually will start deteriorating on their tips.

I looked up pricing of replacement 950 cams on the KTM parts fiche. The front exhaust cam was priced at more than $450, and the other 950 cams were in the range of $350 for one, $250 for another, and $150 for the last one I looked up. WTF! I don't know what was going on with the odd pricing.

Then we looked up various versions of the 990 cams. It seems that we kept getting the same part numbers, suggesting that all of the 990s have the same cams today. All of these cams can be purchased online for $108 each. So, less money for taller cams.
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Old 06-19-2013, 07:10 AM   #8
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It would have been interesting to have taken a dyno run before the 990 cams were put in, and then after to see where the torque & HP curve moved to. I guess butt dyno will tell soon enough- Did you also go with 990 pistons? Good luck!!
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Old 06-19-2013, 07:58 AM   #9
BRUNO BOTELHO
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Quote:
CJRacer has done this on an old 950, and he says it has worked well. Basically, the original 950 cams were not properly heat treated, and the cams eventually will start deteriorating on their tips.

I looked up pricing of replacement 950 cams on the KTM parts fiche. The front exhaust cam was priced at more than $450, and the other 950 cams were in the range of $350 for one, $250 for another, and $150 for the last one I looked up. WTF! I don't know what was going on with the odd pricing.

Then we looked up various versions of the 990 cams. It seems that we kept getting the same part numbers, suggesting that all of the 990s have the same cams today. All of these cams can be purchased online for $108 each. So, less money for taller cams.
Thank you very much for the info

At this moment, the engine of my 950 is going to be disassembled to replace piston segments and other parts. I will take a close look to my cams to check if they need to be replaced.
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Old 06-19-2013, 10:58 AM   #10
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Quote:
Originally Posted by BRUNO BOTELHO View Post
Thank you very much for the info

At this moment, the engine of my 950 is going to be disassembled to replace piston segments and other parts. I will take a close look to my cams to check if they need to be replaced.
This is not my picture, but my front exhaust cam looked like this when I took the heads apart:



The cam was damaging the top of the bucket, so there was no question about it -- I had to replace the cams. If you see pitting like this on a cam lobe on your bike, you should seriously consider replacing the cams.
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Old 06-19-2013, 05:19 PM   #11
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Thank you for the picture, i will check
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Old 06-19-2013, 11:02 PM   #12
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I was wondering if the 950's crank can take the extra load, as the new-style-dash 990's have the SuperDuke's crank. Also, does the 950's ignition timing suite these cams?
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Old 06-21-2013, 04:25 AM   #13
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I was wondering if the 950's crank can take the extra load, as the new-style-dash 990's have the SuperDuke's crank. Also, does the 950's ignition timing suite these cams?
The additional load on the 950's crank should be very minimal. The cylinders have the same pressure as before. The only additional load is through the cam chains having a slightly different tension as they rotate the slightly taller cam lobes to push the valves down. Very minimal change.

Taller cams also do not change the timing of when the lobes push the valves down. The 990 cams are marked just like the 950 cams with dots that line up with the head surface. You line them up just like you line up the 950 cams. I find the 990 markings much better than the 950 markings, though.

I cranked the bike for the first time last night. It sounds great with good throttle response. And, I'm still running mostly stock jetting on the bike at 900' elevation:

Mains: 160 front/165 rear
Idle jets: 42
Float height: 2.5ish
Needles: Factory Pro needles on the middle clip
IMS: Flex Jet 2s at 2 turns out.

So far, the bike idles perfectly, just as it did before. I could go larger on the mains, but I intend to ride the bike in the mountains of Colorado in a few months, and the smaller mains help at that elevation.
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Old 06-21-2013, 07:57 AM   #14
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Hey Oc,
Don't think I missed it but, how many miles are on your motor? Are you the original owner? assuming you always ran the good oil in her.
I'll be running the COBDR as well into steamboat for the rally, I'll eventually make it to the campground where CJ is staying, can't wait!
hope to see you out there

AJ
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Old 06-21-2013, 08:13 AM   #15
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Originally Posted by AJ990R View Post
Hey Oc,
Don't think I missed it but, how many miles are on your motor? Are you the original owner? assuming you always ran the good oil in her.
I'll be running the COBDR as well into steamboat for the rally, I'll eventually make it to the campground where CJ is staying, can't wait!
hope to see you out there

AJ
I bought the bike from the original owner with 24,000 miles on it. It now has 36,500 miles on it. The original owner was a KTM dealer rep., and he said that he had always run Motorex in it. I've run Motorex except for once when I couldn't get it, and I put in 10W40 Motul that once. The motor was super clean inside when we pulled it apart, and it has never shown any kind of deterioration, such as metal shavings or the like. The original owner said the water pump had been done at 24,000 miles, and I don't think that was true. The shaft was totally crapped when I changed it this winter, and it had the old-style red seal that was really, really stuck in the case. It had to be driven out:


My engine developed the engine-oil-in-water problem after the winter service, so it was either the retightening of the head nuts or a leak between the oil/water jackets on the clutch inner cover. I'm thinking it was the clutch inner cover problem because a resurfacing of that part during the rebuild showed that the cover was warped close to where the jackets run next to each other. Sure hope it's fixed this time. I'm tired of working on it.
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