Maint & Upgrades This Summer

[Mech Engr]

OK here we go...

I have a 2005 RMK 900 that I bought last summer with 900 miles on it. I put another 900 miles on it this season right up until the last ride on memorial day here in Nor-Cal. Sled has run flawless all season with no real problems (gas gauge is a little flakey at end of season and sled seems to be running a little warmer than usual). I have around $1K to spend and here is what I was planning to do (in order until the $ runs out):

1. Buy the newer type engine mount from Colin at Compfusion.
2. Do a top end rebuild (even though compresion is still good) using 2006 piston kits from Polaris. Now Here is where I need a little help...how can I tell if it already has 2006 pistons by looking at them? Even better is there a way to tell by looking at them through the exhaust ports to avoid tear-down?
3. Have clutch balenced by Indy Dan.
4. Change to 19/42 gearing
5. Install 225# track spring

The kid I bought it from said the dealer had installed a new clutch. I'm wondering if maybe I got lucky and they really installed the large crank set up. How can I tell if it's the larger crank? I have a set of calipers...is there a place I can measure without clutch removal that will tell me if it's the larger crank? I also already have a float kit for fixing the flakey gauge.

As Always, Thanks for the input, John

 

[POLZIN]

I like you list but i would just put factory 06 motor monuts in unless you want to add a billet crossmember to the list. I would not install the stiffer mounts without it . the stock piece will break and you will pull the motor again.

 

[Mech Engr]

I like you list but i would just put factory 06 motor monuts in unless you want to add a billet crossmember to the list. I would not install the stiffer mounts without it . the stock piece will break and you will pull the motor again.

According to Colin the new mount is made to be used with the factory cross member with much success. If I am wrong here let me know becuase I don't want to spend the extra money for the new Compfusion mount if I have to buy another cross member too.

 

[POLZIN]

All I know is thatI have seen LOTS of broken cossmembers after the mounts where installed . Its just the next weak point !

 

[Z-Man]

new mount is designed different to reinforce the area that breaks. Haven't heard any feedback on them yet.

 

[Z-Man]

 

[sks rider]

That just pisses me off. Paid all that money last winter for the mounts and now hes got new ones?????? AND noone told me i needed a billet crossmember.
Just overall pissed.

 

[Franz]

I'll be coming out with a new billet crossmember that does away with the plates. Just bolt on the compfusion urathane pucks and the metal washers and go. Same price as the old one and stronger yet. Should have parts to ship by 1st week september.

 

[r.c.rob]

I like you list but i would just put factory 06 motor monuts in unless you want to add a billet crossmember to the list. I would not install the stiffer mounts without it . the stock piece will break and you will pull the motor again.

x2
Then i thought i could have my crossmember welded w/support.
Pulled the motor three times after the weld broke too.
Rob

 

[r.c.rob]

That just pisses me off. Paid all that money last winter for the mounts and now hes got new ones?????? AND noone told me i needed a billet crossmember.
Just overall pissed.

Me too.
Been running new 06 mounts with no problems for the 1/3 the cost
Can i have my money back. I wont even charge you three motor pulls and a crossmember that was on back order. yea we know why back order, he must have sold a lot of mounts.
Collin said he dident know why the mounts came apart and the crossmember cracked, he had never seen this before.
Later same day i read other peoples stories with same prob.
Mountianhore s reckomended them.
Thanks guys........not

 

[rmk2112]

My question is why even use these instead of stock?

The mounts are way too rigid and they transfer the vibration to parts of the sled not designed to handle it.

Replaced all 4 mounts with stock mounts 2 yrs ago and have gotten 1200 miles a season on 1115 belts... I put new on and transfer the previous years belt to spare every summer.

Just pulled motor to do some steering repair......inspect all 4 mounts.......still in perfect condition.
BTW, I do have a SLP torque and push arm installed too.

 

[Franz]

x2
Then i thought i could have my crossmember welded w/support.
Pulled the motor three times after the weld broke too.
Rob

I would never weld on an aluminum engine crossmember. Takes all the heat treating out of it and is worthless for strength. Unless it is a massive overbuilt peice to begin with, which is not the case here. With an engine this size I'd rather have it firmly held into position rather than being pulled out of clutch alignment during hard pulls, especially with only a 30mm pto.