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    Correct jetting for stock GX390

    .92mm main jet is what the recommended for my stock GX390 clone motor. Pilot jet and emulsion tube to remain standard as stated by NR racing.
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    Correct jetting for stock GX390

    Hi guys, Another question... I have a stock standard Honda clone GX390. I am wanting to rejet my stock carb with the addition of a pod style airfilter and exhaust header pipe off NR racing website. I am unsure what sized jetting I should use to achieve a reliable motor that will not require...
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    Hydraulic hand lever with sight glass brake bleeding issues

    Thanks for your help. I ended up removing the full assembly... MC and caliper mounted the caliper higher than reservoir attached clear tube to bleed nipple and other end of tube Into brake fluid and just pumped Like a mad man. Tried tapping on brake hose between caliper and reservoir and after...
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    Hydraulic hand lever with sight glass brake bleeding issues

    When you mention that the air will also stay in that sightglass until you pump it out....how exactly would do I this? My MC is vertical and has to be as that's the way it's mounted. When I did a normal brake bleed it did nothing more than half fill the glass and no more liquid would fill it to...
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    Hydraulic hand lever with sight glass brake bleeding issues

    Thanks mate. Yea I've hunted all over Google and YouTube for anyone globally who may have had the same issue as me and pretty much zero luck apart from a YouTube video I found with a guy talking about the tiny inbuilt master cylinders on minibikes and how to eliminate air locks in them. He also...
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    Hydraulic hand lever with sight glass brake bleeding issues

    Hi guys, Has anyone out there ever bled one of these systems before? It's a hydraulic hand lever to a single rear caliper assembly. I have just replaced the hand lever and hose assembly to my existing brake caliper with a new one. The issue I'm having is I'm unable to get any hydraulic...
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    40 series torque converter and axle gear size

    Any idea of best brand of torque converter? Want one thatl last... I see we have the tav2 brand here in nz but I'd have no idea if it's good or bad 🤔
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    40 series torque converter and axle gear size

    It's insane lol took it for its very 1st spin on a long gravel driveway yesterday 🤣 ... must say I was pleasantly surprised. My wife said the smile she saw as I flew past was from ear to ear. Considering it's speed governed at the moment and stock everything.....I can only imagine the power at...
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    40 series torque converter and axle gear size

    Thanks mate. From what I've seen online I can't seem to find any 10 tooth clutches with a 1 inch bore Size with chain pitch of 420? I'm unsure whether the gear on the clutches are interchangeable or not....
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    40 series torque converter and axle gear size

    Awesome thanks for your help appreciate it! So in the mean time if I'm wanting more torque with my centrifugal clutch I'm guessing I would be better off getting a bigger rear axle gear? Keeping in mind the clutch has 14 teeth.... because right now bottom end power is crap
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    40 series torque converter and axle gear size

    Hi mate the engine size is GX390 and is the bigger sized 1inch bore or 25mm crank. The chain itself is 420 pitch and also has been from stock form. I was always led to believe a smaller axle gear would create more torque, or a bigger axle gear would create more top end speed?
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    40 series torque converter and axle gear size

    Hi guys, I've recently upgraded to a brand new GX390 clone which is currently running in stock form. I'm running a rear axle gear size of 48 teeth on 8 inch tires and currently have a 14 tooth centrifugal clutch. I'm loving the mid to top end power, however bottom end sux! I've been told I...
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    Stock gx390 motor

    What would be the tooth numbers on both gears to achieve this?
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    Stock gx390 motor

    Hi guys, Upgrading from my old clone gx200 to a gx390 clone motor. Question is where do I begin with engine mods? I know governor removal appears to be a very common mod in order to gain higher RPMs... any help would be appreciated. I'm also running 48 teeth on the axle gear and 14 via...
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    Modified Gx200

    Hey guys, I have a highly modified gx200.....everything engine related is replaced minus the crank and ignition coil. For ages now it's been running like a dream! No issues at all. The other day my son was riding the go kart around our section at home whizzing around having a great time, then...
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    Gx200 leaking head gaskets

    Hey guys, I now have a highly modified gx200 clone motor which has all race internals. I am also running a milled gx160 head for higher compression. The problem I am having is leaking head gaskets after a period of driving the kart hard. I started off using a genuine honda gasket which lasted...
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    More power wanted.... As I'm used to what it makes now

    Hey guys, what would be the best cam for maximum bottom end, mid and top end speed? I have a fully modified gx200 clone motor now with the following. Billet rod .20 longer than stock, billet flywheel, governor removed, .615 oversized stock carb with 140 emulsion tube and .37 jet, gx160 head...
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    Clutch for gx200 honda clone

    What would you guys recommend as a good quality performance dry clutch for the gx200 honda clone motor? My stock one is still good but have a strong feeling it'll be toast once I finish building my motor up with new parts. Can anyone tell me what the stock clutches are like after installing...
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    BSP-2 HP Box Stock Clone Honda Go Kart Racing Cam valve lash

    hi all, Just wanting to know if anyone would have the valve lash for the BSP-2 HP Box Stock Clone Honda Go Kart Racing Cam? There was nothing in the box which i got a couple of days ago in regards to the setting for it & i dont have the sellers email address anymore .... I am also going to be...
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