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post #1 of 10 (permalink) Old 01-07-2013, 05:30 PM Thread Starter
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atc 350x

hello every body im new to this site, i just purchased a 1985 atc 350x . i was just wondering if there are other engines that are compatable. i took the engine apart the head is trashed and i excpet the crank as well. just wondering if the 350 fourtax engines are the same or have interchangable parts? i appriciate an help on this matter
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post #2 of 10 (permalink) Old 01-07-2013, 08:58 PM
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Welcome to the forums.
I believe the 87 fourtrax 350 are the same engines since they banned trikes in 86 so the 87s never made it to production. the engines were used on the 350 utility four wheelers

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post #3 of 10 (permalink) Old 01-07-2013, 11:32 PM
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This engine is unique to the trike and trike only. Any 350 quad is going to be an automatic clutch. The closest thing you will probalby find would be mid-eighties XL350 or XR350. These would be closer to the 350X in terms of power output and interchangability, but I'm sure there's many 350 Honda engines that could be made to work if you're determined enough. It would be a shame to destroy a 350X in order to do that though.

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post #4 of 10 (permalink) Old 01-08-2013, 07:53 AM
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The top end from the 350 fourtrax of the same years will work. There's not to much other interchangeability on those motors. Some have made 400ex and 450r motors work in that chassis but you got to be commited. If you decide to go full on motor change i got an extra 350 frame you can get cheap to experiment with.

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post #5 of 10 (permalink) Old 01-08-2013, 10:06 AM
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post #6 of 10 (permalink) Old 01-08-2013, 08:16 PM Thread Starter
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ok thank you for the help i will try and look for a top end off an 86, 87 four wheeler will probly be eisier to find
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post #7 of 10 (permalink) Old 01-09-2013, 02:20 AM
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Welcome to da forums... The top ends off of the 86-89 TRX350 Fourtrax atvs will work as they're the same head,cylinder,etc...Plenty of parts on feeBay,but the heads can get pretty expensive on there at times,and check the cam journal pics really well as they are usually the reason a head is bad...

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post #8 of 10 (permalink) Old 01-09-2013, 02:23 AM
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post #9 of 10 (permalink) Old 01-16-2013, 11:36 AM
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Quote:
Originally Posted by robs250x View Post
400ex 250x 300ex



Those won't work.

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post #10 of 10 (permalink) Old 01-16-2013, 03:57 PM
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Check ebay, there a few cranks there. Top end of the 350 Foreman/350X are totally interchangeable. I'm sure there are some other cylinders and heads that could be made to work. XR500/FT500 head will fit with some work. I don't know about the XR350, could be direct swap, it would be worth running some P/N's.

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