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Old 03-19-2007, 02:26 PM   #1
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Guys,

I have read many posts about adding stiffer rear springs to my ZR. My stock springs are too soft for my liking. (Just had all 4 shocks rebuilt). Have choices for new springs narrowed to two:
1604-224/225 ~ 1704-290291 and 1604-442/443 ~ 0704-938/939. Question is, will I have to revalve the rear shock to account for the stronger rebound of these springs? If so, what about the skid front shock, will I have to revalve or make a spring change there as well to balance the skid out?

I am 6ft. 215 lbs. Probably close to 230 lbs. dressed out.

Also, I don't know what size the stock rear springs are in this sled. (2002 ZR 800 carb)


Thanks,


DaveM
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Old 03-19-2007, 08:41 PM   #2
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IMO you won't have to re-valve. There are guys on this site that know the part #s by heart. I put .460 dia. springs on my 800, though I lost the #. I personally don't think that at 230 lbs, you'll ever get it too stiff. Set it on the softest cam setting and work it up as needed, once the new springs are on it.
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Old 03-20-2007, 10:14 AM   #3
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captainruss99,

Thanks for your info!
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Old 03-20-2007, 10:50 AM   #4
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<div class='quotetop'>QUOTE (Spallgard @ Mar 19 2007, 01:26 PM) <{POST_SNAPBACK}></div>
 Quote:
Guys,

I have read many posts about adding stiffer rear springs to my ZR. My stock springs are too soft for my liking. (Just had all 4 shocks rebuilt). Have choices for new springs narrowed to two:
1604-224/225 ~ 1704-290291 and 1604-442/443 ~ 0704-938/939. Question is, will I have to revalve the rear shock to account for the stronger rebound of these springs? If so, what about the skid front shock, will I have to revalve or make a spring change there as well to balance the skid out?

I am 6ft. 215 lbs. Probably close to 230 lbs. dressed out.

Also, I don't know what size the stock rear springs are in this sled. (2002 ZR 800 carb)


Thanks,


DaveM[/b]
Stay away from the 224/225 combo. I use them set at the softest cam settings and I'm 285+. My 250# buddy couldn't stand it when he sampled the sled.
PM zrsledhead for his advise. He's in your wgt. range this season and has played with several combo's to get it right.
It may be as simple as a spring with a different (smaller)angle. The 90 degree springs offer too little pre-load. An 83 or 75 degree spring without thicker wire size may work wonders for you.

Good Luck!
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Old 03-20-2007, 02:55 PM   #5
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A set of 0704-944/945's would work perfectly for your wt. My sled sits up where it should and rides like a Caddy, no re-valving required.
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Old 03-20-2007, 06:11 PM   #6
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I went with the 83 degree springs on the ZR 136" project along with BM's 30% more preload blocks. After one hard riding season I have adjusted the springs to the next level. Running my clicker at about 6 or 7. Weigh in at about 200 with gear.
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Old 03-21-2007, 04:09 PM   #7
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ZR Sled Head and others,

Thanks for the info on the springs. I'll go with Sled Head's recommendation on these.


Thanks again!



Dave
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Old 03-22-2007, 08:39 PM   #8
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388-389s is what I have I 260lbs

I think they are the same as zrsledheads just 388/389s are the old part #

75deg by .452 wire
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