Jump to content

2008-2014 Sno Pro Race Chassis


Recommended Posts

27 minutes ago, hayward said:

Thanks.  What does it mean by some saying "uncalibrated"?  I saw another website was the same way, offered it both ways.

Edit: How are these parts so cheap through this place?  Who I used to deal with 20 years ago, they want over $1000 for both clutches.

Lot's of these discount places around.  They usually just take longer to get parts and aren't real good at pinpointing when they'll ship.  

The uncalibrated was answered by C2C.  Sometimes you are better off buying the complete set up unless you like to tinker.

Link to post
Share on other sites
  • Replies 96
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

no hopefully I'll get them back next week and begin the assembly process, start up and break in - hope our snow sticks around...

Magic has been performed, look forward to getting it all back together.  If anyone needs a guy that is meticulous, particular and just does shit right, pm me for his contact info.  

grey area, as the 2008-2011 600 SX & XC are the same chassis as the 2010-2014 Sno Pro 500. good news is, @mnstang & @Fast 440 are here, so that's about 60% of us that used the one particu

Posted Images

27 minutes ago, hayward said:

Yeah well, my whole problem is i've got too much shit to maintain.  I actually had good intentions and ordered 2 new bearings back in the end of Dec., and they just came in last tuesday.  Should have taken the time and tore into it for peace of mind, instead now I have junk.

Just the way it goes. 

We had so many bearing problems on my 08 that when I got the 2010 to 2014, we replaced every bearing on that sled that wasn't in the engine.  Chaincase, jackshaft, entire skid.

Link to post
Share on other sites
40 minutes ago, racinfarmer said:

Just the way it goes. 

We had so many bearing problems on my 08 that when I got the 2010 to 2014, we replaced every bearing on that sled that wasn't in the engine.  Chaincase, jackshaft, entire skid.

You source all the bearings through cat or put better quality bearings in?

Link to post
Share on other sites
7 minutes ago, hayward said:

You source all the bearings through cat or put better quality bearings in?

I like USA bearings and belts.  Better quality and not too spendy

Link to post
Share on other sites
On 2/13/2021 at 5:10 PM, hayward said:

 

Edit: How are these parts so cheap through this place?  Who I used to deal with 20 years ago, they want over $1000 for both clutches.

what don't you understand about Dealer Cost?

don't expect lightning fast service... but the price is pretty much what they claim.

Link to post
Share on other sites
On 2/13/2021 at 5:56 PM, Crnr2Crnr said:

Thanks for the link.  Very nice girl on the phone who helped me out with what they could ship and what was on backorder and how long the wait would be.  Even went as far to find me dealers who had that particular part in stock and gave me thier number as well.  Great experience.

Now, still need a primary clutch though.  Backordered till May 1rst.

  • Like 1
Link to post
Share on other sites
On 2/10/2021 at 5:44 PM, Crnr2Crnr said:

we'll need more info bud...


what do the plugs look like?

how's the spark, right after it dies?

what RPM does it die at?

what setting is the timing at?

compression checked?

jetting correct for altitude and temp?

primary and secondary checked?

and more.... tell us what you've done.  did you test drive it?

2008's are their own animal and fwiw - not my forte' 

 

One plug looks ok the other is black and both are wet.

haven’t checked spark after it dies I will next test run. I broke the pull rope and just got that back together.

seems to die randomly at any rpm

timing is set at “0”

compression checked out at 145 both cylinders 

jetted correctly 

I don’t know what your referring to on primary and secondary 

Link to post
Share on other sites
On 2/10/2021 at 4:36 PM, ArcticDuvall said:

One plug looks ok the other is black and both are wet.

haven’t checked spark after it dies I will next test run. I broke the pull rope and just got that back together.

seems to die randomly at any rpm

timing is set at “0”

compression checked out at 145 both cylinders 

jetted correctly 

I don’t know what your referring to on primary and secondary


So...

one side sounds overly rich if you are getting carbon, and both are likely on the rich side - jetting on these from what I know is rather temperamental and something even experienced with these struggle with.  the good news is there is a company that can help with the jetting issues on this particular model for normal use https://www.holtzmaneng.com/carburetion-products and there is a great write up on a site many of us used to frequent on the install https://www.hardcoresledder.com/threads/how-to-install-a-holtzman-atacc-in-a-sno-pro-600-with-pics.572063/

random rpm doesn't make this any easier, but spark still needs to be verified upon dying.  we all know full well engines need fuel, spark, timing and air to run properly, the struggle will be sorting out which of yours isn't ideal.

another group to seek reasonably good advise (from time to time) for these is https://www.facebook.com/groups/572764329589268 but take each piece of advise with a grain of salt because there's some dumb fucks on there as well - because, well, it's facebook.

hope this helps, and maybe @fortune46x, @Zambroski or others might chime in here and give you better guidance than me.  

:)

Edited by Crnr2Crnr
Link to post
Share on other sites
On 2/13/2021 at 6:21 PM, hayward said:

Jackshaft's toast.   Might as well change lower bearings as well while i'm into the chaincase i guess.

there's a guy on FB offering hardened jackshafts for these - even though the under-spec'd piece of shit bearing on the secondary side is the biggest (OVERSIGHT) issue.

On 2/19/2021 at 12:41 PM, hayward said:

Thanks for the link.  Very nice girl on the phone who helped me out with what they could ship and what was on backorder and how long the wait would be.  Even went as far to find me dealers who had that particular part in stock and gave me thier number as well.  Great experience.

Now, still need a primary clutch though.  Backordered till May 1rst.

no problem... they seemed good to deal with and their pricing is phenomenal compared to everyone else including my favorite vendors.



in other news, the 720 is back together and fired on the first pull tonight, no leaks, no issues and it sounds healthy and happy.  heat cycle #1 completed, will do another and test start test riding and break in.

VERY Happy, and breathing a HUGE sigh of relief.

  • Like 1
Link to post
Share on other sites
10 hours ago, Crnr2Crnr said:


So...

one side sounds overly rich if you are getting carbon, and both are likely on the rich side - jetting on these from what I know is rather temperamental and something even experienced with these struggle with.  the good news is there is a company that can help with the jetting issues on this particular model for normal use https://www.holtzmaneng.com/carburetion-products and there is a great write up on a site many of us used to frequent on the install https://www.hardcoresledder.com/threads/how-to-install-a-holtzman-atacc-in-a-sno-pro-600-with-pics.572063/

random rpm doesn't make this any easier, but spark still needs to be verified upon dying.  we all know full well engines need fuel, spark, timing and air to run properly, the struggle will be sorting out which of yours isn't ideal.

another group to seek reasonably good advise (from time to time) for these is https://www.facebook.com/groups/572764329589268 but take each piece of advise with a grain of salt because there's some dumb fucks on there as well - because, well, it's facebook.

hope this helps, and maybe @fortune46x, @Zambroski or others might chime in here and give you better guidance than me.  

:)

Well, gotta get those plugs burning closer for one but, unless the one is soiled more than he is saying, that shouldn't make the sled die....just run rough.  I'm still guessing it's an electrical issue, if not a ground, coil(s), stator, VR.  I'd start focusing my attention to testing these items.

  • Like 1
Link to post
Share on other sites
12 hours ago, Crnr2Crnr said:

there's a guy on FB offering hardened jackshafts for these - even though the under-spec'd piece of shit bearing on the secondary side is the biggest (OVERSIGHT) issue.

no problem... they seemed good to deal with and their pricing is phenomenal compared to everyone else including my favorite vendors.



in other news, the 720 is back together and fired on the first pull tonight, no leaks, no issues and it sounds healthy and happy.  heat cycle #1 completed, will do another and test start test riding and break in.

VERY Happy, and breathing a HUGE sigh of relief.

The bearings are bad but put a dial indicator on your clutch or better yet on the jackshaft and you'll see yours are probably bent.  I went through a few looking for a good one and never did finally just bent mine back and had my dad true it up on lathe.  Mayberry that's why the bearings never last..

Gotta look at everything if you're add or just looking for maximum efficiency.

Link to post
Share on other sites
1 hour ago, mnstang said:

The bearings are bad but put a dial indicator on your clutch or better yet on the jackshaft and you'll see yours are probably bent.  I went through a few looking for a good one and never did finally just bent mine back and had my dad true it up on lathe.  Mayberry that's why the bearings never last..

Gotta look at everything if you're add or just looking for maximum efficiency.

Well if my jackshaft was bent, then the bearing was a good one because it lasted 3400 miles.  You mean you went through a few new jackshafts and they were all bent, or used one's?

Link to post
Share on other sites

I didn't bend mine, I checked it and found it was bent.  I got some other used ones and they were all bent too.  Mind you not enough where anyone could notice it without checking with precision instruments.  I never bought a new one but I've seen the guy selling the ones he's making and it seems like a good deal compared to a cat one and I've dealt with that guy before and he seems solid.

Link to post
Share on other sites
12 hours ago, mnstang said:

The bearings are bad but put a dial indicator on your clutch or better yet on the jackshaft and you'll see yours are probably bent.  I went through a few looking for a good one and never did finally just bent mine back and had my dad true it up on lathe.  Mayberry that's why the bearings never last..

Gotta look at everything if you're add or just looking for maximum efficiency.

 

5 hours ago, mnstang said:

I didn't bend mine, I checked it and found it was bent.  I got some other used ones and they were all bent too.  Mind you not enough where anyone could notice it without checking with precision instruments.  I never bought a new one but I've seen the guy selling the ones he's making and it seems like a good deal compared to a cat one and I've dealt with that guy before and he seems solid.

good points, and admittedly I've not checked my shafts when out during bearing replacement.  in hindsight I probably should have done that when replacing the j-shaft bearing on the 720 - but like most just assumed the shaft is fine because it's a big thick piece of steel and it 'should be' straight and true.  the 500 is due for a new bearing in fall, so I'll probably have to pull the shaft and see where it runs out.  one would hope and think things as such in a race derived chassis would be spot on... but they are made by people who work for a company, with a budget, and bean counters.... 

sigh 

Link to post
Share on other sites

Can anyone help me identify these cams?  My SP500/F7 refused to disengage normally on my ride yesterday and I found worn cam bushings and a flat spot roller.  I was hoping to just rebush them but one is chewed up a little from where it wedged in and they are looking pretty worn at the hole.The primary spring is silver and the cover says 160/300 on it.  It also says 71.2 or 71.5.  The cams have 74 written on one side and 71.2 or .5 on the other with an 'R'.  This clutch came on the F7 motor and I thought it ran well.  If I need to replace the cams any suggestions as these are hand ground.  Hope it's ok to just start a new subject in this post.

 

IMG_1711.thumb.jpg.7bc7734d5e8294295e187b484cbe1b0d.jpg

 

IMG_1713.thumb.jpg.8ca2dce48f31e57cc5377105152e6bb7.jpg

 

IMG_1710.thumb.jpg.280be62ac3f7333637461946c1c30d89.jpg

 

 

Link to post
Share on other sites

well, this was a gigantic pain in the balls because for some dumb reason I wanted to retain as much of the original decals as possible and at the same time extract heat from the engine compartment but here was my process for adding the Proven Designs vent kits to the Sno Pro 720.  high quality stuff, and a perfect fit.  my wife is a great sport for letting me do it right on the living room floor.  so, with the 15" wide track, Cat M-scratchers, the Koso gauge and the vent kit if I overheat this thing, it's all my own damn' fault. 

I'll get a couple pics on the machine, at some point.

 

thumbnail_IMG_4798.jpg

thumbnail_IMG_4799.jpg

thumbnail_IMG_4800.jpg

thumbnail_IMG_4801.jpg

thumbnail_IMG_4802.jpg

Link to post
Share on other sites
1 hour ago, mnstang said:

It'd be cool if you got the original side decals and cut them in a way so they lay over those louvers

I thought about that as well, and it would be cool.  Problem is the vent material is pretty slick and I doubt the decals would adhere real well, and cutting them properly would require a PHD in physics. 

in hindsight I should have gotten the lower vent in white, which is an option.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.




×
×
  • Create New...