KR-1S.co.uk Forum

yep you read it right i rode a restricted KR1S around anglesey today ...


Bloody thing wouldnt rev past 8k rpm

this happened to me at the last couple of sessions at oulton last month, but since then i have changed the stator(new one), floats valves, and cdi.

Today i changed :
the coil, but got only a weak spark so changed it back again...still a weak spark

thought it may be the jetting, running 135's changed to 140 but only made it worse at lower revs...so changed back

checked the pv motor on startup goes thru the motions but rev the bike to the 8k max!!! and it doesnt operate, (with or without cables connected)

so i swapped it for another (i carry lots of spares )
still the same....

changed cdi back...still the same,,
ty-wrapped the powervalves open (disconnected from the motor)
...still didnt rev past 8k

something is breaking down and not allowing the bike to rev past 8k and open the pv



HELP................i have checked every connection and changed nearly every electrical component

oh forgot to say still kicked ass in the twisties,
the k-tech front end and blade brakes were awesome

just lost out on the slightest straight...even to an rgv

Strangeengine was awesome today...

he kept the KR flag flying high =D> =D> =D>

Just a thought Corky it's not over oiling is it? its just that at silverstone on monday a guy with a tz250 had the same problem & it turned out there was to much oil in the fuel?

33 to 1......

running 135 jets and a ledar ram air kit.
(2" trumpets and a ramair filter, no airbox)

Another thought did i read on here somewhere about somebody fitting an electronic ignition & it wouldent rev, so he fitted a different set of plugs that he brought of ebay? think they were these http://cgi.ebay.co.uk/KAWASAKI-KR-1-KR- ... dZViewItem think it had something to do with the resistors you can tell me to shut up if i'm talking crap

Don't Kwak normally restrict on the carb side....

Normally used to 4 strokes... so wouldn't know how to restrict a 2 stroke...

Just an idea... restricted air flow??? or perhaps restricted inlets into the reeds?

Nate

i gave a set of restrictors to a guy in irland...just plates that sit in the engine tract in front of the carb with a ten mm hole in it at the bottom..b"st3rd was un-ridable nothing under 7 grand and less above .....put em in for the missus but it would have killed her....
it still sounds like a coil if you need one to try i have one i can guaranty works but i will need it back...and a cdi and pickup too if needed....

how u going korky wot engine wo z u using matey the stans or urs if using yours try opening the reed stoppers and make sure u got no fuel blok as i had the same problem on this bastard gamma i got turned out to be week fuel supply and reed stops were closed 3.5 mm some fule thought he woz clever bend them out not in t**t or it could be a (broken reed) worth alook see ya next week boyo =D>

running same engine i did at oulton before the problem occured,

had engine out set up pvalves,checked reeds all ok...

changed plugs at anglesey from ngk racing to normal, still the same.

i have got another coil will try that....

would like to get it all sorted as i want to get all my zeeltronic/vapour dash/35mm carbs and new engine set up in my spare frame ready for the dyno.

then i know this is a good engine as a spare...

Dunno if this is true or false , but have read of some quality issues with NGK plugs after they have started being made outside Japan .
Anyone heard anything like this ?
Denso eq is a IW29 from what I can work out , but hard to find down here .
Strange problem Corky

dodgy tachos can cause problems such as misfiring/reluctance to rev im sure of it? i seem to remember mj having a problem with his tacho at cadwell after the crash at (mallory?) were the tacho took a bump and im sure he disconnected it either beacause its linked to the ignition and could blow the cdi or because his bike was misfiring or both? im not sure by any means but worth a thought. if you havent swapped as coild yet then id try that first.

SORTED

3 coils, 3 sets plugs(ngk racing/normal/iridium), 2 pick ups, 3 pv motors, 2 cdi's, 1 set carbs, numerous jets....changed

checked connections, disconnected pv's ,wired pv's open, cleaned earths, wd40, ran open carbs,

and now shes great !! last bloody coil change did it ,

gonna buy a brand new one......

i hate bloody hate wigglys.....

but she is spitting a fair bit of light coloured smoke out of lhs pipe when cold and and part burnt fuel/oil out when warm

left hand only....

both exhaust gettin warm ,both hav a good spark and revs build lovely

any ideas

will try and give her a good blast and see if it goes