I just received my new LOSI 427 to put into my LST2. This is a replacement for the dynalite 427 that never ran correctly for me. I would like to get some use out of this motor. So I want to do it up right if you will.

1. I am going to pull it apart and check for burs or manufacturing defects.

2. I am going to seal all gaskets with a high temp silicone
-I have considered getting the marketed sealant for nitro motors but have decided to use what I have on hand and seems to work just fine.
-I apply a very thin uniform layer to prevent any excess squeezing out into the crankcase.

3. Swap motor
-I have not swapped motors on one of these before but I have removed my current one to inspect it. I am assuming that it will be the same except new motor goes in it's place
-I will be using the original clutch and I will watch the gear mesh when I finally install it.

4. I will follow all this with a Heat Cycle Break in and hopefully begin to enjoy my LST2.

Am I missing anything?
Do you have any suggestions?

you may want to scuff the inside of the clutch bell to give it a little more bite.

any specifics or just 60grit paper and run a few lines length wise around the inside of the bell.
Does this drastically affect shoe life?

it doesn't affect shoe life, it just gives the shoes something to bit into, as apposed to slipping. so it might actually increase life.

thanks for the input. I will give it a shot.

Make Sure to use the Collet that Came with the Flywheel & Not the One on the New Engine..........(The LST's Collet is Shorter than Most others) And the Engines are the Same....The Teal head has a Bigger Carb and High Compression Head Button...But other than that they are 100% the Same Engine & both made by SH Engines/Golden lion......

i need to find the parts diagram for this motor to identify the collet, as I can't place it off the top of my head.

I had heard it was a bit more powerful to push a single speed tranny. I look forward to running it.

Thanks for the input