Mercury Snowmobiles Discussion Board

I am gearing up a 340 t/t to drag on the ice 660'. Planning on putting the eight tooth drivers on to protect the tunnel, I still think I may have to gear down a tooth or so from the original 17 tooth top gear. They seam to be geared high. Going to a comet clutch with their recommended set up. Does a...

Very interesting reading as I recently restored a 440 t/twister that I want to set up for 660' drags.

Mine has 17/34 gearing in it. What was the stock gearing on these sleds?

What type of fuel are you guys running?

Did you find much difference by removing the coils in the exhaust?

What Spark plugs should I run in a 440 trail twister.

Can anyone tell me what the stock size of main jets would be for this machine. I am restoring my first twister and it has 220 main jets. I thought that seemed a bit small, but maybe not.

Also what torque should be used on the bolts of crankcase.