Carb motor to efi summary

Brief background: original 1998 Arctic Cat Zr 600 efi motor blew mag side bearings and took lower end with it. Bought a supposedly 98 efi motor from a dealer that only had 1k miles on it. Turns out it was a carb motor. Here is what I had to do to make it work as an efi.

1. Remove impulse line and fitting from crankcase. Replace with plug bolt and washer from dealer.

2. Remove carb boots and replace with throttle body boots.

3. Replace cylinder head with one from efi because an efi motor has a coolant hose that runs from the throttle body to the head, carbs do not.

4. Replace carb stator with efi stator.

That's it, in a nutshell. In my case it helped I still had most of my efi parts needed.

Fuel mix

I should mention that since there was oil pump work performed I mixed up a couple of gallons of 50:1 mix to run on. I'd the oil tank level goes down then I should be good to go after that

First snow, first ride!

We were fortunate here in mid-michigan to get about 8 inches of snow on Saturday.  I was even more fortunate to take the ZR out for a ride!  It ran great, from low speed to almost full throttle. No engine issues at all. There is a noticeable squeak from the track so I need to check that out, but if that's all that's wrong I'll take it!

Finally, it's running!

Before I get to it running, I will summarize how I cleaned the injectors.  

1.  I set them in a prescription pill bottle filled with injector cleaner.  I put tape around the top so the screens were just below the fluid.

2. Took a 12 volt motorcycle battery, clipped alligator clips to the injector, and briefly cycled each  injector 5 or 6 times

3.  Blew them off. 

The screens were now clean so I assumed the rest was.  

Put the injectors back in the sled, dumped in fresh fuel, primed the pump, then crossed my fingers!

It started after about 10 pulls, then quit.  I pulled it another 4 times, then it started and kept running! YES!.  I shut it off after a minute, waited about 5 minutes, then tried again.  It started on the first pull, and I did the same thing 6 times in a row, starting first pull each time!

So, now, besides waiting for snow, I need to double check all my connections, put the hood back on, double-check all the fluid levels, and give it a test run when I can!