Stock, Bore, or Turbo KK 900 efi?

[507Sledz]

Currently have a seized up motor on my 2005 Arctic Cat King cat 900. For a year now, and have no idea now which route to go with it. So my questions are:

1. Should I just leave the motor a stock 900, and do pipes, air snorkel, belt drive, maybe high comp heads, ect. Just build around the 900 jugs, pistons, heads, crank?

2. Put a turbo on it? (But heard doing it on an EFI is harder the carbed sleds)

3. Bore it. If I bore I still will want pipes, CAI, Belt drive ect.

I want to be able to keep up with the new sleds to an extent, but also don't want to be breaking down every trip I take out west.

Very Respectfully: 507Sledz

 

[Idcatman3]

The only thing holding that motor back from keeping up with anything new is the chassis it's in.
They are definitely showing their age, but improvements can be made.

I'm a big fan of the 975 big bore using M1000 pistons. Add a single pipe and call the motor done. Head isn't necessary, IMO, reeds are ok, but not a huge deal.

We've got a bunch of sleds with this motor now, and it's great. The chassis is the issue. We solved this two ways.

One is a highly modified 1M chassis. Van Amburg tunnel, Diamond drive, M8 skid and fuel tank/seat. That required a new steering post, that is near vertical (uses a polaris post with a U-joint.) This sled is great, but was a ton of work.
http://www.snowest.com/forum/showthread.php?t=345844

Second one was less work, but feels a little blasphemous. Put the motor in a Polaris Dragon chassis. Worked out quite well also. Feels like most of the difference between this and #1 is the track and suspension setup.
http://www.snowest.com/forum/showthread.php?t=387978

 

[sledneckbrd]

If you are looking to upgrade to turbo or big bore kit I have about anything you need. I have 3 king cat's with different setups on them and I am looking at selling all my snowmobiles. Let me know and we can talk about what I have and what you want. I will be posting pictures and details this summer when I get things cleared out of my garage.