Hello,

Thank you for checking this post.

The sled is basically a stock 1998 ZRT600.

I am looking for the best combo out there for tuning my carbs and clutches.

Preferrably a list of parts that I can get from Arctic Cat.

What primary clutch weights, spring color, and secondary clutch helix angles, and spring color will work the best?

What pilot, needle and jetting to use?

Thank You. :)

Don't know your temps or elev but for 0-2000ft try this:
Maroon primary spring 185-320
Red sec spring,second hole
55 gram weights, 57/50 helix
320 mains-check wash!!!!!
You want to make it pull around 8200 with hot pipes.
All this is assuming stock pipes and intake tract. Hope this helps.

Originally posted by ZRT600 Mountain Cat Rider@Nov 13 2002, 03:37 PM
Hello,

Thank you for checking this post.

The sled is basically a stock 1998 ZRT600.

I am looking for the best combo out there for tuning my carbs and clutches.

Preferrably a list of parts that I can get from Arctic Cat.

What primary clutch weights, spring color, and secondary clutch helix angles, and spring color will work the best?

What pilot, needle and jetting to use?

Thank You. :)
You should state what your tuning for: racing (5,6,1000), radar runs, trail, etc...

I ran polaris 10AL weights and an erlandson red primary spring in my 1996 zrt. I run polaris bushed weights in all my cats.

hay zr9er, you metioned stock intake tract, i got v-force reeds, and my zert is a 96 that has a little more hp then the 98?????, i'm lookin at maybe keepin my 54gr. stock weights, and tryin the rest????

I just picked up a 98 ext tripple from my brother in totally stock form. I 'm running a cat 0/W primary spring pt#0646-248, comet AC 57.1 gram weights, 53 deg. helix pt. #0648-002, red/white sec spring pt#0648-114 in middle hole I also removed 1 washer from under the drive clutch spider, #35 pilot jets air screws 1 - 1 1/2 turns out the rest of the carbs are stock for 0 to -20 deg at 1000ft ele.
engages at 4800 throtle up fast -5600 reving up slowly, shift is 8300-8400 rpm

this always worked for me ; cat green yellow primary spring, a52 weights and a 53* cam with a yellow spring.