2006 Polaris iqr 440 motor swap - Snowmobile Forum: Your #1 Snowmobile Forum

joel_skeldon · 11-03-2012, 03:38 PM

I have a 440 iqr and I may put a 600 liberty motor in it. Will the 440 carbs from work on the 600 motor if I use the proper jets?

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mikemalibu · 11-04-2012, 01:03 AM

Isn't that 600 a tripple? If so ur missing a carb. Second i don't know if the spigot mounts are the same. The mount may have to be changed for a different sized carb. And if u go to a smaller carb on that bigger motor the full potential won't be there. Kinda like running 3/4 throttle at wide open.

**RJ Gleason** · 11-04-2012, 04:04 AM

There are no Liberty triple engines.

joel_skeldon · 11-04-2012, 04:31 AM

Yeah I know its a twin motor. Anyone know if I can make the 440 carbs work on this 600 motor?

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**RJ Gleason** · 11-04-2012, 04:44 AM

The bore of the carbs will be too small.

joel_skeldon · 11-04-2012, 06:15 AM

Anymore feedback from anyone? What about the clutch too?

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**RJ Gleason** · 11-04-2012, 08:55 AM

You will need the carbs and pipes for the 600, the clutch can be refitted for the 600[spring and weights].

JD8345RT · 11-05-2012, 09:47 PM

Running 440 carbs on a 600 would severely limit it's potential, even if you could set it up to run with a safe air/fuel mix.

mat · 11-06-2012, 12:47 AM

Isn't reboring the existing engine cheaper? Just a thought