Jets help

MUDBLASTER · L Plate Warrior Joined: 14 Dec 2002 Karma :

Just got an arrow exhaust for my 97 Nsr125 (UK) I need to know what size the main jets is standard and does any one know what size jet arrow recommend putting in? I was going to go up 5 or 10 and see how it goes Smile

Ropehead · Could Be A Chat Bot Joined: 02 May 2002 Karma :

if its just a new exhaust id work up a jet @ a time. it probably wont need tacking up more than two or three sizes. just take it easy and get some of the great info on the net about jetting and
carbs.

https://www.directparts.com/static/articles/carburetor.html

https://www.eric-gorr.com/tech/carb1.html

https://www.sportbikes.com/html/carb_jetting.html

and of course from tin Laughing

https://www.tin3d.com/images/sparkplugs.jpg

mattiec · L Plate Warrior Joined: 16 Jun 2007 Karma :

hi , wos wondering if anyone noes what main jet size is needed for a derbi senda 2005 after the exhaust restricter taken out. and does anyone no the standerd size ??
thanks matt

hmmmnz · Super Spammer Joined: 22 Aug 2006 Karma :

mattiec you thread hijacker!!
help us to help you.
pull the carb off and tell us what main jet size you have...
its written on the main jet itself

mudblaster, i would start a 2 jet sizes up. (jets are usually in 2.5 increments) but 1 jet size up would probably be enough. if you have the original filter
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mattiec · L Plate Warrior Joined: 16 Jun 2007 Karma :

sorry

but how do u remove the clip on the carb ?? thanks