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jetting confusion.. MRD +stock carb

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ok here it goes:

sea level

drz400 s 2000

stock carb

3x3 + uni filter

MRD/SSW

after reading for an hour i cannot grasp the difference between s and sm jetting setup, dont they have the same carb ?

this is what i think i understand:

160 main +25 pilot, 4th clip 2.5 turns... right?

but i also found that since i have a S i should put a 142.5 jet kit?

please clarify this,

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As I understand it there are three kits Dyno Jet stage 1 and 2 and the James Dean kit.

The DJ stage 1 came out for the S and was not intended to be used with the 3x3. You can use it with the 3x3 but you have to buy a bigger main jet than comes in the kit.

The DJ stage 2 kit was made for the SM and the 3X3 so it has a different needle and comes with the jets you need. This can also be used on the S model with the 3x3.

The James Dean is a more complete kits, comes with two needles and is considered to be the best kit by users on this forum.

Get the James Dean kit and follow the instructions.

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Thank you, iv just went over the master 3x3 post and all of its 42 pages,

one last question does the James dean kit come with the #25 pilot?

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