09-12-2016, 11:22 AM | #1 |
Not Yet Wild
Join Date: Nov 2011
Posts: 3
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Harley/Columbia with 4 stroke engine conversion
Just thought I would share this 4 stroke conversion i did to my Harley/columbia cart. I put a 16 hp briggs horizontally opposed engine and a polaris trail boss 350 Forward Neutral reverse Low, gearbox in it. Exhaust is hand made. I had to cut out a section of the frame so the engine would sit low enough for the bonnet to close and it raised the cart about 3-4 inches. I put coilover shocks from a moped on it. the only thing left to do is make the linkage for the gear selector. right now i have it geared to run 25mph and it will spin the tires in grass and gravel.
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09-12-2016, 08:46 PM | #2 |
Gone Wild
Join Date: Jun 2015
Location: East TN
Posts: 525
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Re: Harley/Columbia with 4 stroke engine conversion
Thats great. Maybe you could describe what you done to retrofit in more detail. Seems like this would be a good subject.
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09-13-2016, 05:10 AM | #3 |
Gone Wild
Join Date: Jan 2016
Location: Hickory, NC
Posts: 702
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Re: Harley/Columbia with 4 stroke engine conversion
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09-13-2016, 07:16 AM | #4 |
Not Yet Wild
Join Date: Nov 2011
Posts: 3
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Re: Harley/Columbia with 4 stroke engine conversion
Well I will include a few pictures I took as I was building it. It didn't occur to me to document the whole process but I took these as I was working on it. The Cart was lifted by cutting and rotating the the mounts that the swing arm attaches to, also I put in pillow block bearings with a straight axle for the rear end axle assembly. I can try to answer specific questions.
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09-13-2016, 10:31 AM | #5 |
Not Yet Wild
Join Date: Nov 2011
Posts: 3
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Re: Harley/Columbia with 4 stroke engine conversion
I marked in yellow the swing arm mounts I cut and welded in a different direction. The red just shows where the frame used to be.
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