ZR 440 sno-pro vs. Z 440 sno-pro - Page 4 - HCS Snowmobile Forums

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Old 11-29-2006, 10:36 AM   #31 (permalink)
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I was a mechanic for awhile for a buddy of mine who had both a 2000 and a 2003 Z SnoPro. The stock clutching is fairly good, we always used the 20-39 gearing for everything. I found that the BM54 weights from Black Magic worked very well for most conditions, the seemed to pull harder than the stock 55's?? The 2000 would not really keep up all that well with the 2001-2003 models, as they had the extra power. I would imagine that if you upgraded the timing on the 2000 to the 2001 - 2003 specs, that it would pull harder and have more power. As far as speed goes, with the 20-39 gears, and a long flat pull on a hard pack or icy surface with a slightly lowered sled, you should be able to see 90 mph.

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Old 11-29-2006, 12:46 PM   #32 (permalink)
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Fast 440,
Do you think if I advanced the timing on my 2000 to meet the 2001 specs, that it would not hurt the engine or risk detonation? I guess I would need to confirm if the heads were any different between the 2000 and 2001-03. I would update the timing if it does not present much of a risk. The sled is trail ridden, not raced. Next question is how would I advance the timing? Does it use a timing key on the flywheel?
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Old 11-30-2006, 01:49 PM   #33 (permalink)
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I would just call the race dept. in Thief River Falls and ask if you can have your timing box updated from 2000 to 2001-2003 specs? If not, then maybe an offset key would be best??? There may be a little bit tighter heads on the 2001-2003 models, but I cannot verify that.

EDIT: I have looked into the differences in the engines. The 2001-2003 all use the same cylinders and heads. The 2000 has neither of these parts. Therefore with the big push toward sno-cross I am going to guess that they made changes to the port timing for better bottom end response. I would say with your current 2000 engine, if you re-map for Cross Country racing program from the 2002-2003 years, that you will have even better top end pull, while possibly gaining some bottom end. On the sled I used to wrench on, a 2003 model, once we got the CDI re-mapped for Cross Country instead of SnoCross, it still pulled really hard on the bottom, and opened up the mid and top for more performance. We did have to go down to -2 on the timing box for some reason, but that is where it ran good. Generally using 290 jets in fair weather. I would ask the race department if the newer programs can be used on the older 2000 SnoPro, or if there is a good reason it cannot.

You might just stumble onto something great!

1-218-681-9799 ask for the race department.

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Old 12-01-2006, 02:47 PM   #34 (permalink)
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Thanks Fast! You are the resident 440 fan expert :beerchug:
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Old 12-01-2006, 05:12 PM   #35 (permalink)
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This is for the Matt L. i just noticed that in one of your first post there you mentioned that the 98-99 was the first year they introduced the 440 sno pro.....2000 was the first year they had a z 440 sno pro ...they dont make a 1998 z 440 sno pro.....or a 1999 z 440 sno pro...never did all they had was the zrs....thanks
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Old 12-01-2006, 07:40 PM   #36 (permalink)
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Quote:
This is for the Matt L. i just noticed that in one of your first post there you mentioned that the 98-99 was the first year they introduced the 440 sno pro.....2000 was the first year they had a z 440 sno pro ...they dont make a 1998 z 440 sno pro.....or a 1999 z 440 sno pro...never did all they had was the zrs....thanks[/b]
Actually, I'm almost positive they did make a 99 Z Sno-Pro. :beerchug:
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Old 12-01-2006, 09:40 PM   #37 (permalink)
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yep definately a 99 z-pro. and I am not sure I would follow all of his advice on the setups because the sled will definately not pull 20-39 gears when heat soaked. 19-40 is far better. Actually i talked to the engineer at arctic cat who designed the motor and he gave me some very usefull advice and insight of how the motor was designed and what it is capable of as far as fuel, timing, weights ect.
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Old 12-02-2006, 11:21 AM   #38 (permalink)
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alright for both of you guys that know everything....type the shit up and look for one...they dont. a 1999 z 440....thats it......a 1999 zr 440........but not a 1999 Z 440 sno pro look it up and post a picture if you think they do. 2000 was the first year they came out with a ....440 FAN sno pro

alright for both of you guys that know everything....type the shit up and look for one...they dont. a 1999 z 440....thats it......a 1999 zr 440........but not a 1999 Z 440 sno pro look it up and post a picture if you think they do. 2000 was the first year they came out with a ....440 FAN sno pro :beerchug:
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Old 12-02-2006, 11:39 AM   #39 (permalink)
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I also am certain that there was a 1999 Z 440 SnoPro. I remember looking at one before buying my 1998 ZR SnoPro. Can't produce a pic for ya, but I'm sure someone will soon!!!.
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Old 12-02-2006, 12:19 PM   #40 (permalink)
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your soooo fuckin funny.....alright describe what it looks like because in 1999 the ZR sno pro had the long hood and the 1999 Z 440 had a lil newer one but then in 2000 they came out with that whole new style and thats when the OOOHHHH Z 440 snopro came out......look it up anywhere i dont care how certain ANY of you guys are none of you are right about the 1999 Z 440 sno pro...i dont care who you are. do ur research, there wasnt shit then when you figure that out come back n go wow, your right. i thought i was CERTAIN. nope. sorry boys
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