I purchased a new RC390 in may of this year, at 650 miles i went to do my initial service and found the cam shafts to have unusual wear. So i take it to the dealer and 5 weeks later they finally replace the cam shafts. Well now it will not go over 86 MPH so i am taking it to a different KTM...
What a day!
After warming the bike up and bliping the throttle, there was a horrible metallic knocking noise. After taking the engine out, I found that the bolt holding the timing sprocket on the cam had come loose. It has bent the cylinder head and cracked it, along with the valve cover.
Has...
As I'm usually riding my bike mostly from 7,000 to 10,000 rpm in all gears, and my peak TQ is 3.6 kg-m at 7,060 rpm, I'm thinking of moving the power band highier. Anyway, I have planned to regrind my cam but before I do so would like to try this out to see what I can get. My plan is to retard...
ALL NEW Brembo "Corsa Corta" 19RCS Brake Master Cylinder
The NEW Brembo 19RCS CORSA CORTA allows the rider to tailor the “bite point” exactly where they want it, with an easily accessible selector on the top of the master cylinder itself.
As with the RCS19, the New Corsa Corta Brake Master...
I performed the 600 mile valve adjustment on my 390. Upon starting, the bike randomly cuts out - it makes a popping sound right before it cuts out. I didn't mark my cams before I took them out and now I'm wondering if they aren't aligned correctly? I used the alignment marks on the cams, but the...
MotionPro Rev2 Revolver Throttle Kit for RC390
Offers more control of the throttle & reduced hand fatigue when riding.
Top End is quicker to enjoy than stock due to the progressive ramp of the variable cam reel.
For more information, just click on the link below
>> MotionPro Rev2 Revolver...
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Doing a valve clearance check at the 5K mile mark, found both exhaust valves @ .11 re-shimmed to .15 using a HotCams shim kit.
When putting the cams back in at TDC, there are 2 horizontal marks and a T on the cam gears, the horizontal marks should be level and even with the block and the T...
2nd time on a track in 20 years. RC390 with 800 miles Akrapovic Exhaust, Diablo Rosso II tires 29 psi front and rear when hot, upgraded front disc, KTM RC Cup forks, and super super crummy squishy unadjustable stock rear shock. Shot with Sony Action Cam HDR-AZ1. Top Speed estimated between 111...
I can't find the specs on the 390 Cam profile. Anybody happen to have anything which states what it is? Intake and Exhaust open/close degrees, degrees of overlap, and degrees of lobe separation. I'll pull the cams and direct measure if I have to, but would rather not if that info is actually...