ktm 300 exc

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ktm 300 exc

Post by adie666 on Tue Sep 13, 2016 5:50 pm

gents...
been struggling with my bike set up running wise.
anybody on here riding a 300 and know what jets and needle they are running.
also what colour spring in power valve...
cheers
ade

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Re: ktm 300 exc

Post by Taffy350 on Tue Sep 13, 2016 6:12 pm

This has been mentioned before, most of us I know are running 165 main jet, 35 or 38 pilot, clip 2 from the top on the needle & 1.50 - 1.75 turns out on the air screw, If you was to ask a top secret I'm not telling you person to have a reply of " I had to figure it out so I'm not telling ", but then all you do is ask a certain other 300exc person & all is revealed  Very Happy , power valve spring depends, if you have the Green spring in it's great for low down lazy torque & hill climbs but just takes a bit more to wind it up, yellow spring I'm on now & it was great for the Barmouth trip of open moors & forest tracks and a good all-rounder really, I tried the red spring on a trail ride & had to change it an hour or 2 into the ride as all it wanted to do was race off & I'm not up to the red spring, Besides most have tried the red & it's to silly for trails, they've all gone back to yellow or even green. spring will be trial & error & how you ride I think, hope this helps.. wheelie
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Re: ktm 300 exc

Post by juljam33 on Tue Sep 13, 2016 6:50 pm

As taffy said if it's a 13 - 16, 17 got different carbaretoooor wheelie
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Re: ktm 300 exc

Post by x.b.b. on Tue Sep 13, 2016 6:54 pm

What problems are you getting with it adie666

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Re: ktm 300 exc

Post by adie666 on Tue Sep 13, 2016 9:25 pm

cheers gents...
just trying to find a happy medium with the valve spring green seems a little boring red wants to kill me.. just found a yellow spring so fitted that..
as for jetting just found my main jett had snapped in the carb that was 168 so i fitted a 170 but run out of light to test so will go through it tomorrow...
cheers again

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Re: ktm 300 exc

Post by Taffy350 on Wed Sep 14, 2016 10:56 am

We've all done what your trying to find out by trying loads of stuff, If you run with our set up: 165/35 clip 2 you probably wont get it any better, 170 jet is rubbish on fuel, I know.... I run out 2 or 3 times on a ride & had to borrow some from the 4 strokes Rolling Eyes
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Re: ktm 300 exc

Post by adie666 on Wed Sep 14, 2016 3:38 pm

cheers taffy...
could only find 170 last night will have another look at it on the weekend...

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