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Old 09-22-2003, 05:47 PM   #1
96ZRT600 XXX
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Hey fellas ! 96 ZRT 600 whats the spec. distance between drive & secondary? My 96 ZRT 600 comes out at approx. 4200rpm but dogs until 6500rpm then she runs great to 7800rpm and pegs right there. The belt seems loose. Not sure what to do? Any info. will be appreciated.

thanks, Strass.
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Old 09-22-2003, 07:41 PM   #2
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You've come to the right place for information on this sled. I know there are more than a few on this site that have much experience in clutching the ZRT6. You might even be able to do a search in the archives to find some old discussions on this subject.

To the point - I'm not a clutching expert (I run a custom set up from a local speed shop) but 4200 RPM is a little low. I have mine engaging around 4800 and it still has a slight bog to it (I don't race it so it's acceptable). Stock RPM should be 8300-8500. It sounds to me that the clutching calibration is off. Is it stock (the '96 was way off) or has a clutch kit been installed in the past?

Provide a little background info on the sled and someone here will be able to fix you up.
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Old 09-23-2003, 09:27 AM   #3
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Get yourself a goodwin kit for a 97 and get a roller plate for the secondary. You will also want to get a set of MicroBelmont weights for your drive clutch, the Goodwins give a bad bogg. Also get a new belt and you will be golden. ARCTICZRT600 has spoken! lol
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Old 09-24-2003, 12:00 AM   #4
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96 ZRT 600
Helix=55
PRimary weights 54g
Spring=yellow green
main jets 340 at sea level
pilot jet 45

This setup is a good all round works good off trail and will still bury the needle in a hurry.
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Old 09-24-2003, 09:29 AM   #5
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Quote:
Originally posted by IBLEEDGREEN@Sep 23 2003, 09:00 PM
main jets 340 at sea level
I ran 330's.
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Old 09-24-2003, 11:19 AM   #6
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the very first thing to do is take a look at evrything on the sled,skid frame, bearings, jack shaft bearings,driveshaft bearings,chain case, adjust or replace chain, if sled has 4500 or more replace chain and gears, your tryin to create the least amount of rollin resistance as you can, next, the clutches, if you havent already, look hard at the primary, any cracks on any of the sheaves?,looseness, if so replace the clutch, use the A\C 9 tower, i found that the stock weights, with an orange\green HPE primary spring, gets the rpm's at engaugment to around 5000grand, 57\50 helix A\C roller cover,mine is off from a 97sno-pro 440 it cost about 50bucks, bolts right on your secondary,use stock secondary spring,340 mains, make sure your carbs. are squeaky cleaned and synced, i'm using delta v-force reeds, have your shocks rebuilt, minimum of 144 carbide push thrus, 8 inch front carbides, line up the ski's, make sure your pipes are completly sealed, no leaks, if you see any anti-freeze leaking,under the pipe area, rebuild the water pump with all the updated parts,also, look at every engine mount, cracks, broked welds,etc....theres an updated one at the secondary\jack shaft area, this is usually where i look every season before i ride, my sled is set up just like this and it flys, i lead the pack when ever we ride, you wont find a better flat cornering sled then the 96 zrt600, just my opinon....... SWRules
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Old 09-25-2003, 03:19 AM   #7
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Quote:
Originally posted by IBLEEDGREEN@Sep 23 2003, 09:00 PM
96 ZRT 600
Helix=55
PRimary weights 54g
Spring=yellow green
main jets 340 at sea level
pilot jet 45

This setup is a good all round works good off trail and will still bury the needle in a hurry.
I'd have to add...
57-50 helix
cat yellow green pri
54 gram tcat weights
cat yellow sec spring

and most importantly 24-39 gears! Those gears work with the stock chain.

Also try running it at 8200 and at 8500. To get 8200 you can try a yellow white pri spring. Also try out the cat red sec spring.
A 55 deg straight helix will bring up the rpm at the end of the shift.
You won't notice much difference between stock 23-40 and the 24-39 gearing, just a heck of a lot more midrange and top end with the 24-39's. With the 24-39 your clutches stay below 1 to 1 longer and are therefore more efficient.

Yup, as someone else said earlier, give the sled the once over..idler wheel brgs dry up and seize very easily. My track spins by hand easily and the sled can be dragged around on a dry surface by me very easily too.
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Old 09-25-2003, 04:59 PM   #8
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DID ANYONE READ WHAT HE WROTE!!
Did you check all of your motor mounts, especially the one by the secondary clutch!!!
That sounds exactly like a broken motor mount.
It's a dog till high rpm's.
The zrt's were notorious for snapping that back motor mount.
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Old 09-25-2003, 05:08 PM   #9
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[quote]96 ZRT 600
Helix=55
PRimary weights 54g
Spring=yellow green
main jets 340 at sea level
pilot jet 45

isnt that the stock set up?.......... this works well....the green/yellow again but with A52 weights and a 53* cam with the yellow secondary spring. run the stock gears for drags and 24-39 for the rest.
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Old 09-26-2003, 05:46 PM   #10
96ZRT600 XXX
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Hey Thanks for the info. just picked up the sled late Feb. and just started going thru it with a fine tooth comb. Shes gotta White Primary and Yellow Secondary in her. I will check all as yall mention. I think it is a broke motor mount.
Thanks again, keep ya posted.

Strass...
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