Cheapest way to build Polaris watercraft triple?

Apr 1, 2022
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1
Norway
I'm looking to build a polaris watercraft based triple motor as a summer project, and do it kinda budget friendly. So if anyone has experience with this feel free to share your thoughts.

I'll buy a used crank case of ebay. Cranks will be built out of two twin cranks (haven't decided on building a 1050 og 1200 yet. Whatever i find parts for first). Cylinders and pistons will just be stock snowmobile ones. MAG housing/waterpump housing off a 700 liberty. TM40 carbs. I'll weld triple pipes out of two sets of twin pipes. Cylinder head i don't know what the best option is. I've read that you can use the heads from the stock watercraft engine on the snowmobile cylinders, some say you can use the stock snowmobile domes with a custom water jacket (don't know how as the stock 700/800 heads have the domes cast in to them). Other say you have to get a billet head. Anyone know what is true? Also anyone know what reeds and carb boots will fit the WC case? I know the stock liberty reeds are too small at least 🤔

Anything i have forgotten?
 

Fosgate

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Mar 28, 2005
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For a rebuild you might want to look up cranky ape or IAAI.com to see if a wrecked one is going across the auction block. Might be a cheap way to get a whole or nearly whole parts unit on the cheap.


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Apr 1, 2022
7
0
1
Norway
For a rebuild you might want to look up cranky ape or IAAI.com to see if a wrecked one is going across the auction block. Might be a cheap way to get a whole or nearly whole parts unit on the cheap.


Sent from my iPhone using Tapatalk

Thanks for the tip. The plan was to find motors out of wrecked sleds to use for parts. But for me at least it might me cheaper and easier to find them locally in Norway. I also has lots of parts on hand, i just have to look through as see whan i have and don't. So it should be doable within a reasonable budget.
 

gp800

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Sep 25, 2017
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There is a Facebook group called big triple motors. currently there is a few complete/parts engines and turn key packages for sale on there.
 

joshkoltes

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ranchester, wy - nashua, mn
Your answers are here
 
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