UK Karting - Notice Board (Combined Forum) : Re: Carb pin size

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Re: Carb pin size
Posted by 'alanrr' on 24 Aug 2015 @ 00:35

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alanrrJoined: August 2001
Total Posts: 491
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The profiles are different.

The k27 is thinner on its lower part and will run richer up to 3/4 throttle.

The k98 is much fatter on its lower part and will run leaner, especially in the first part of the throttle opening after 1/4 throttle.

The main jet doesn't really play much part in the 1/4 to 3/4 throttle opening, the needle controls the fuel delivery, so you could remove the main jet and the carb would perform normally up until the 3/4 to full throttle point when the open tube would pass too much fuel.

By raising or lowering the needle position with the circlip, you will alter the fuel/air mixture at particular throttle openings.

Message Thread:

Carb pin size by 'Budge1987' (23 Aug 2015 @ 18:45)

Re: Carb pin size by 'alanrr' << You are here!

Re: Carb pin size by 'itpro' (24 Aug 2015 @ 1:37)

Re: Carb pin size by 'alanrr' (24 Aug 2015 @ 9:20)

Re: Carb pin size by 'Budge1987' (24 Aug 2015 @ 20:53)

Re: Carb pin size by 'alanrr' (25 Aug 2015 @ 23:24)

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