All 2st Cold weather engine protection running a lectron?

Just wondering if anyone has tips to protecting your motor from a cold seize? I'm set up to ride the ice but only have maybe three hours on the motor. I run a lectron so jetting should be OK I assume but I'm guessing there is a temp that is even to cold for the fuel rod to deal with??? Anyone know what that temp might be?
Has anyone put something in front of the radiator to block cold air and allow the engine to run warmer?
I don't run a thermostat....thanks for any advice!

You could partially block off some of the rad, however a bigger problem is carb icing if riding for long periods of time in the extreme cold especially in fresh powder snow. See the following thread: http://www.cafehusky.com/threads/frozen-carb.15486/

Having my carb freeze wide open might be the only way I can keep up with some of these ice racing guys lol. A buddy did say they run card board in front of the radiators so that may help engine temps stay up then.
I know in my previous life as s snowmobiler we only got worried about carbs freezing when the temps were just below freezing something to do with moisture and condensation then freezing. Maybe that temp range was more ideal for creating frost can't remember. In any case I'm gonna give it a whirl this weekend!

Which bike are you going to run?

I pick up your 165 magic machine on Saturday but can't break it in with 20° temps and feel OK about it so I'll be taking the 300..and waiting patiently to pull some wheelies on the WB!

Running 1000 screws....

it has to do with the dew point and the flow on the negative side of the slide

In snowy Minnesota we use a old inner tube or similar flexible mat'l to basicly wrap around the carb in order to keep the heat in and the snow off!

Here is what you need:
Rotax 600 with heated carbs. Carbs are TM rack style carbs though. Coolant runs through the carb body to keep bad things from happening.....

So ran the lectron today at 12° F, was a little nervous so I pulled the plug after a little riding and it was golden brown!!! Woo hoo! Ran flawlessly all day! I did install 3/4 length radiator covers and let everything get warm before riding the lake. Everything went great!

Had to leave myself a reminder on my radiator covers lol....

Another thing to mention is that when the weather was warmer the bike never spooged oil when I rode the other day in 12 degree temps it had tons of drool out the muffler. I can only imagine the pipe couldnt get hot enough to burn up the excess oil but just goes to show I dont think the Carb has everything to do with the spooge.