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UTV Off-Road Classifieds - Buy & Sell

UTV Board Classifieds - List your UTVs or any other utility vehicles, parts, accessories, etc. Looking for something? Post it in this forum.

243 topics in this forum

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  1. DONE

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  2. joyner

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  • Latest Posts

    • Thanks for the update. Very cool buggy and great engineering. Mine still has the Subaru-Robbins 9 hp but is doing the job. I wish I could rig a fuel tank and a better exhaust system.
    • Just to note, we noticed an oil leak on the 670 on the flywheel side, the frame would get wet with oil.  Upon inspection it was just the oil vapor breather tube came loose and was weeping oil.  I thought maybe it blew a seal out since we run it around 4000-4500 rpm most of the time.  That's the only issue I have had with the new engine.
    • It's doing great, far better than I expected even. I haven't really done anything to it for the past three months, except drive it. I was worried we would break the Predator engine, but it takes everything we can throw at it. The engine I replaced was a Robin/Subaru EH63. I am running the same CVTech powerbloc clutch, just with a slightly lighter spring , I believe it is the 400/700 spring. Had to go with a lighter spring as the extra torque of the 670 engine over revved (was annoying) a bit at wide open throttle, the lighter spring holds it around 4000-4500, vs 5000-5500 with the original spring. I put new plugs in it around 40 hours ago, and just change the oil. It runs really well now that the jetting is dialed in.  I had to install a wide band O2 sensor to fine tune the Mikuni, but it's about as perfect as I can get it, running around 14.5:1 at cruise, and around 13.2:1 at full power.  I have not put any other money into it, aside from a set of LED lights. The Kevlar drive belt has held up extremely well, even after attempting to smoke it by climbing some very steep terrain fully loaded on a 100+ degree day. If it has a weak link, I haven't found it yet lol
    • Looking for a tube exhaust header for the joyner 1100 engine. Thanks!
    • Here ya go! Not sure which one you need...  http://mpsracing.net/joyner-trooper-drivetrain-parts/982-joyner-trooper-1100-new-style-rear-drive-shaft-tr110003030200a-.html http://mpsracing.net/joyner-800-mvsv-drivetrain-parts/1296-4t08a-1701601-joyner-sv1100-mv800-output-shaft.html


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