hi all im jason from cambridgeshire looking for help with carb set up and jetting on my 4xv any info would be great.
i have a 1999 r1 with k&n filter and stubby moto gp exhaust. popping on tick over and decel.
what jets do you lot use .are you all useing standed pilots and mains and just changing needles ?
have old dyno with 136bhp and 73 torque.af lower 20 upper af 38 if that means anything too anyone.
thanks all.
hello all
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jayr1197438
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2002r1jon
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Re: hello all
Welcome in Jay,i got myself a 4XV,but tbh i have feck all idea what jets it is running 
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LOCKE
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Re: hello all
Ain't got a clue what you're talking about but welcome in anyway. 
14B. Enough Said.
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PJC
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Re: hello all
Welcome in Mr 38 year old R1 owing bloke 
Enjoy, Can't help with carb stuff, sorry
Enjoy, Can't help with carb stuff, sorry
Tuck in behind me, i'll show you the best place to crash
Stopped drinking, smoking, taking drugs and running sex parties, luckily ive still bikes to corrupt me
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Madturk999
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Bub
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hello all
Hi Jay and welcome to the forum, I think you'll find that you need to change the pilots and the needles, I had a dynojet kit for my 4XV and the pilots had to be changed at the same time as the needles
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jayr1197438
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Re: hello all
Hi and thanks for replys still need some help about jetting if any one can help me out.
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jayr1197438
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Re: hello all
Hi thanks was it a 1998 as think they had 15 pilots and think mine has 17s.any more info would be good mate.Bub wrote:Hi Jay and welcome to the forum, I think you'll find that you need to change the pilots and the needles, I had a dynojet kit for my 4XV and the pilots had to be changed at the same time as the needles
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2002r1jon
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Re: hello all
Im sure Alan will be able to assist you,He will be along soon enough,R1AOC is his forum name
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Bub
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Re: hello all
No idea I'm afraid, I bought the kit but never had it fitted I'm afraidjayr1197438 wrote:Hi thanks was it a 1998 as think they had 15 pilots and think mine has 17s.any more info would be good mate.Bub wrote:Hi Jay and welcome to the forum, I think you'll find that you need to change the pilots and the needles, I had a dynojet kit for my 4XV and the pilots had to be changed at the same time as the needles
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As Jon said Al is the 4XV guru so he'll probably know
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jompy
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Re: hello all
Welcome in Jay
to be honest i'm not going to be much help because personally i'd take it to a reputable rolling road & get it set up properly
to be honest i'm not going to be much help because personally i'd take it to a reputable rolling road & get it set up properly
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jompy
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Re: hello all
as to your popping on decel mine pops on decel but not tickover ,just found this on allthingsmoto.com
"Most times a lean condition WILL be indicated by popping, but not always. TW"
"Any 4 stroke engine--even those that are flawlessly tuned will pop on decel. It is harmless, but can be annoying--granted. However, I would never alter the jetting of an otherwise performing motorcycle to get rid of it. Go by the seat of your pants and the color of your spark plug rather than the popping as an indication of the jetting of your scoot!"
Ok so the bike was a crosser but i think the theorys the same , heres the link
http://www.allthingsmoto.com/forums/f-1 ... lained-10/" onclick="window.open(this.href);return false;
"Most times a lean condition WILL be indicated by popping, but not always. TW"
"Any 4 stroke engine--even those that are flawlessly tuned will pop on decel. It is harmless, but can be annoying--granted. However, I would never alter the jetting of an otherwise performing motorcycle to get rid of it. Go by the seat of your pants and the color of your spark plug rather than the popping as an indication of the jetting of your scoot!"
Ok so the bike was a crosser but i think the theorys the same , heres the link
http://www.allthingsmoto.com/forums/f-1 ... lained-10/" onclick="window.open(this.href);return false;
