is there any kind of a fast break in procedure?
i just resleeved my trx3.3 and im guessing i need to re break it in?

is there a method that wont take half a gallon?

I've yet to try it but I hear good things about The Heat Cycle Method. I haven't tried it only because I haven't had a new engine to test it on. I've used the HPI break in procedure which involves a couple tanks at idle. Now that I've learned some things about nitro engines I'm pretty sure the HPI method is garbage but I still haven't had a new engine to test out the heat cycle method. It just makes more sense. I think an engine would have to warm up to operating temps for it to break in properly, instead of slowly cycling fuel through it with out warming up. If it warms up to operating temperature quickly, it'll minimize the time that the piston spends moving through a sleeve that's cold. This means there'll be less wear on the sleeve so the engine retains full compression longer. I'll be buying a brand new engine for my Savage soon son I'll have more info then but in my opinion, this seems like the best way.

This is the opinion of a complete noob to "new" engines, feel free to correct anything I've said if you know better. This is just what I've gathered after having 2 new savages before I knew anything about nitros and now having read a lot online about breaking in new engines. I'm of the opinion that an engine can only be broken in properly if it's brought up to the temps that you intend to run it at. This is a drunken post but it does convey what I think, it just took me longer to type. Cheers....

Yes you can speed up the run in of a nitro engine. The biggest and most important thing is engine temp. make sure you get it up to temp quickly and for at least the first few tanks no WOT passes. And of course make sure the piston is at BDC when it cools down.

Don't you mean the piston should be at BDC?

OOOOPS typo

Yes, he does mean BDC (bottom dead center).

My break in process is fairly simple. It's a heat cycle methid, just shortened.

Start it up on a box of some kind so the wheels are off the ground. Let it idle, leaning the needles so it get's to 200*. Don't lean it out to much though. When it hit's 200, shut it down, piston bdc.
Second start up, same thing but I drive it at no more than 1/4 throttle burps. Constantly checking temp, shut it down at 200*f and let it cool.
Same thing again but with 1/2 throttle blips.
Same thing again with 3/4 throttle blips.
Same thing again with full throttle blips.

Now you're ready to tune it for the track. All in all it's less than 2 tanks for me to do this. My engines have great power, long life, and are easy to tune. You will notice that the engine will really wake up somewhere between the end of your first and the end of your second engine. It'll almost be like someone threw a turbo on that Revo or something.

lol anyway to break it in in the cold?

don't break it in until it warms up

If you have to break it in during cold weather, wrap tin foil around the head of the engine to help it get up to operating temp quicker.