PWK needle jets

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headcoats
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Post by headcoats »

i think i have cracked the splutter in the carbs and it runs like a different bike on low revs now :shock:

All i did was change the airscrews for new ones
I looked at the taper on the old ones and they looked a bit chewed :?
so put in some new ones and hey presto.
I also put markers on the throttle so i could see where the splutter was and it was happening in between 1/4 and 1/3 throttle so small openings.

I can't believe though how much difference new airscrews made
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TOUT
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Post by TOUT »

Are kr1 needles the same as kr1s ?

would kr1 needles work in kr1s carbs ?

Are both variants 135 mains ?

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Post by mj43 »

bryan350lc
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Post by bryan350lc »

holy thread resurection Batman! :lol:
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headcoats
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Post by headcoats »

Yep a few years on and i seem to be greyer,balder and safter :lol:

Well those JJH needles IMO just aren't the right spec and went to the N68A needles which felt better straight away :-k
Left them on clip #4

It needs somone to get the 3 KR standard needles and get the measurments and then compare them to the JJH etc needles.

I guess when you KR boys need to replace worn needles you too will have to find the equivalent needles 8-[
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nikfubar
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Post by nikfubar »

Not sure what the difference is HC but that link says the KR1S needles are N68X & KR1 needles are the N68A, had a set of each so put the Xs in on clip 4 here's hoping [-o<
As far as the comparison between these & JJH needles the diameter is the same for both but the taper for the N68 needles is fatter making them a leaner needle
headcoats
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Post by headcoats »

When i had the JJH needles fitted ,from cold the bike kinda hit a wall at 4K until warm then was o.k.
With N68 needles fitted the bike never hesitated from cold so to me wouldn't that make them richer ?
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Post by nikfubar »

Not sure but I would have thought that if the taper was fatter along it's entire length that would allow less fuel to pass by at any given opening making the mixture leaner :-k
headcoats
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Post by headcoats »

Yes you are right but didn't get that with my knacker :wink:
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