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98 mxz 500 build


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#1 rotaxalltheway

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Posted 21 June 2020 - 11:12 PM

Hi haven’t been on in a couple years but I got to thinking I wanna do some work on my old 98 mxz 500, I was thinking gearing for more top speed? Any advice on what size gears I would need to get? Thanks for any help

#2 rotaxalltheway

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Posted 26 June 2020 - 07:38 AM

Anybody have any information? Thanks again

#3 Ditchbangr zx

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Posted 26 June 2020 - 08:43 AM

Try using Dynamo Joes gearing calculator

https://www.ibackshift.com/calculator

#4 rotaxalltheway

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Posted 26 June 2020 - 08:42 PM

I’ll just contact my local doo dealer if nobody knows thanks for the link Ditchbanger zx

#5 396F/A

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Posted 26 June 2020 - 10:55 PM

Stock gearing for a 98 MXZ 500 is 23/43. Most of the performance trail sleds are geared for about max speed from factory. Summit and Big touring sleds are usually geared down a bit.

Usually "gearing up" a MXZ Formula etc does not gain you any top speed. In perfect "speed conditions" you might gain a little. The HP of the engine dictates how much speed you can get and as stated the factory guys have already done that. You could go to a 24/43 set up and see what happens, I believe you can use the same chain with that, if you go to 25/43 you will need a longer chain.


67 Olympic 250,  69 Polaris Playmate 165,  71 TnT 340

72 Olympic 340 twin,  73 TnT 340 lunger racer,  74 TnT 400 F/A

95 GT 670, 96 Summit 670,  97 Formula SL,  97 MXZ 500 FC

98 Formula Z 583 E-start reverse SC10-II 1.25" precisions,

99 Grand Touring 583, 02 Summit Heritage, 02 MXZ Salt Lake

Previous sleds of interest: 69 Olympic 320 SS, 70 TnT 292, 70 TnT 340, 71 Blizzard 246

72 TnT 775, 73 TnT 400 F/A, 3 - 74 TnT 400 F/A, 75 TnT 440 F/A

76 Sonic 250, 3 RV 340s, 78 Sonic 340

many, many garden variety late 60s & 70 Ski-Doo

 


#6 rotaxalltheway

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Posted 27 June 2020 - 01:48 PM

Thanks for the reply 396F/A I might put my 583 I have on my bench rebuilt a couple years ago never ran due to builder errors it needs a rotary valve gear what do you think about going this route instead? Motors from a 93 formula

#7 rotaxalltheway

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Posted 27 June 2020 - 01:49 PM

Will a 98 583 stator bolt in so I can just plug and play?

#8 turbopete

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Posted 27 June 2020 - 05:37 PM

I would hardly think the difference in hp would be worthwhile, maybe a 670 would be a better choice. The 500s were good little motors. I have heard before that stock versus stock there is not a big difference. That being said, all 583s are not equal. Your 583 is out of a 93 Formula -  Is it a 583 rave or a 580/582? If thats the case, not really an upgrade to the 500, likely slower. 


Edited by turbopete, 27 June 2020 - 09:52 PM.


#9 396F/A

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Posted 27 June 2020 - 10:39 PM

Will a 98 583 stator bolt in so I can just plug and play?

A little confused LOL. Will a 98 - 583 stator bolt into what ???

 

As Pete says....If yu have a type 582 non rave engine, it is not likely gonna be any faster that the 500. If you have a 94 or newer 583 RAVE from a Formula Z with 40 mm carbs you would with out a doubt gain some speed. Ski-Doo geared the S chassis Formula Z sleds at 25/44.


67 Olympic 250,  69 Polaris Playmate 165,  71 TnT 340

72 Olympic 340 twin,  73 TnT 340 lunger racer,  74 TnT 400 F/A

95 GT 670, 96 Summit 670,  97 Formula SL,  97 MXZ 500 FC

98 Formula Z 583 E-start reverse SC10-II 1.25" precisions,

99 Grand Touring 583, 02 Summit Heritage, 02 MXZ Salt Lake

Previous sleds of interest: 69 Olympic 320 SS, 70 TnT 292, 70 TnT 340, 71 Blizzard 246

72 TnT 775, 73 TnT 400 F/A, 3 - 74 TnT 400 F/A, 75 TnT 440 F/A

76 Sonic 250, 3 RV 340s, 78 Sonic 340

many, many garden variety late 60s & 70 Ski-Doo

 


#10 rotaxalltheway

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Posted 27 June 2020 - 11:37 PM

Sorry for confusing guys should have said that the motors a 93 583 rave it needs water,rotary valve gear as stated above, if I fixed the gear would I be able to bolt in a 98 583 stator or they different size? Thanks again

Edited by rotaxalltheway, 27 June 2020 - 11:37 PM.


#11 rotaxalltheway

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Posted 27 June 2020 - 11:41 PM

The 500s are good motors Don’t think i don’t like em I’ve been driving this one for a solid 5 years with no issues other then user error lol just looking for a little more speed

#12 396F/A

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Posted 28 June 2020 - 08:58 AM

Sorry I am not too up to speed on electrics of the early 90s sleds, I really can not help you with the stator question.


67 Olympic 250,  69 Polaris Playmate 165,  71 TnT 340

72 Olympic 340 twin,  73 TnT 340 lunger racer,  74 TnT 400 F/A

95 GT 670, 96 Summit 670,  97 Formula SL,  97 MXZ 500 FC

98 Formula Z 583 E-start reverse SC10-II 1.25" precisions,

99 Grand Touring 583, 02 Summit Heritage, 02 MXZ Salt Lake

Previous sleds of interest: 69 Olympic 320 SS, 70 TnT 292, 70 TnT 340, 71 Blizzard 246

72 TnT 775, 73 TnT 400 F/A, 3 - 74 TnT 400 F/A, 75 TnT 440 F/A

76 Sonic 250, 3 RV 340s, 78 Sonic 340

many, many garden variety late 60s & 70 Ski-Doo

 


#13 turbopete

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Posted 28 June 2020 - 12:01 PM

Even with the 583 Rave, i don’t think you will see a huge difference. If you research it you will see a lot of claims that the early 500s would hang right with the 583. 
https://www.dootalk....-583-vs-500-hp/

 

I am not saying it won’t be faster with the 583, but seems like a lot of work for pretty small gains. I am wondering if you did some clutch work and small gearing change as suggested that you may be happy. 
 

The only 93 that had a 583 Rave was the Plus X, strong runner, if thats what you have.


Edited by turbopete, 28 June 2020 - 12:02 PM.


#14 rotaxalltheway

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Posted 29 June 2020 - 07:35 PM

Im gunna say that’s the one! It’s has raves and my doo mechanic buddy once told me that’s what it was when I bought it in a 440 race chassis, he said it looked like a 93 583 rave witch to my knowledge they’re faster than any other 583?

#15 turbopete

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Posted 29 June 2020 - 09:06 PM

Best 583 up to then, and fast in it’s day. I am not sure that it would be better than a later 583 as in a Z or MXZ with a good rotary valve and 40’s. It would look pretty much like any other 583 RAVE motor, it would take someone pretty familiar with them to tell them apart. 






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