how to re jet a carb

[shager]

hi iv heard that rejettin a carb can make my bike go faster, or by changin the position of the floats can any 1 tell me how to do this??

[stinkwheel]

Didn't you land up with the throttle valve in the wrong way round/needle off or something last time?

I would leave your carb well alone for the moment, they are a precision piece of engineering and you shouldn't fiddle with them unecessarily. I understand how they work and I don't touch them unless I think something is wrong. I advise you do the same.

Rejetting ther carb in itself will not make your bike faster unless it is in conjunction with other modifications. Get the jetting wrong and you could seize your engine.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[NSR-Rulez]

Rejetting wont make a bike go faster it will make the bike run lean or rich, rejetting only usually needs to be done when you use aftermarket exhaust systems, or derestrict a 2 stroke.


NSR-Rulez
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Past: 1985 Suzuki GS 125 + 2002 Honda NSR 125 R-2 + Ford Fusion
Present: Honda CBR 600 RR-5 + Suzuki SV650S-K4 + Mitsubishi FTO GPX

[fuzz]

It can make your bike go faster, coupled with a performance exhaust system and air filter, and some dyno time to get it right.

Not only can you rejet, but as you say, you can alter the float height, aswell as the needle height and altering air/fuel ratio. As you can see, it's not a simple matter of swapping a couple of jets over and hey presto, but rather a complex procedure best left for someon who knows what they're doing.

Basically it goes:

Main jet - Full throttle/high RPM operations
Needle position - Midrange richness
Float height - Low end power
Mixture screw - Idle and low RPM smoothness

Trouble is, changing one thing affects the others, so it's not as black and white as this.
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https://www.bikepics.com/members/fuzzbcf/
Bikes: '99 NSR125R, '00 SV650S, K1 GSX-R600, '97 CB500, K3 SV1000S, '16 VFR800

[Klause]

I bored out my orginal exhausts to make them louder and free flowing. I changed the needle position's recently (richer) and it pulls so much better in the midrange rev's now .
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Current bikes: 1960 Triumph 5ta x2, TTR600RE, KTM200EXC, Cagiva Elephant 900ie.

[puremagic72]

you mean needle second from top?
Baz.
____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[puremagic72]

you mean needle second from top?
Baz.
____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.

[Klause]

[puremagic72]

the needle position!!

____________________
Make; cbr929cc blade Year; 2001
Gsxr 750 2000, alstare Corona, Current bike 1999 R6
(1) Kids in the back seat cause accidents; accidents in the back seat cause kids.