anderkart
Moderator
Hey, I just picked up this older Sprint chassis last month. Thing is, I cant figure out what brand it is. I was told it was a mid-90's Margay, but it does not have any numbers stamped in the frame (near the spindles) like Margay's are supposed to.
It does have some digits stamped into the frames R/R axle bearing mount that read: CIK 004 n.10 82.
I googled "CIK" and it seems to be a European go kart racing association and not a specific kart brand...
This kart has lots of metric hardware and my local sprint kart shop guy thinks its an older Biesse (Italian made) chassis.
Any of you guys have any idea what brand/model/year this thing might be?`
I've had this older (1977) 406cc. 10-h/p flathead Honda (model G-400) sitting around the shop here for years just waiting for a kart:
So... I bought some very strong 1/2" aluminum plate from a metal-scrap yard ($10) and cut out a motor-mount adaptor to bolt this beast of an engine directly to the much smaller bolt-pattern of the 5hp Briggs motor mount that came on my kart.
After doing a LOT of research on the net, I decided to buy and use this Noram Star #35 / 1" bore centrifugal clutch model: http://www.out2win.com/catalog/noram.html#star
(I selected my clutch with the 18 tooth driver option, and used the same 65 tooth rear sprocket that came with my kart. I bought a new #35, RLV brand 'Gold on Gold" model chain)
I drilled a hole in my carbs factory plastic, heat-insulator, and installed a 1/4' barbed-fitting, to slide a hose on, that supply the pulse-signal, that is used to drive/operate the large-round Mikuni pulse-fuel pump you can see mounted on the frame in the second pic below:
So far, my engine mods have only been to disconnect the governor and build a home made straight pipe. I'm planning on slowly enlarging the original carbs main-jet until the spark plugs insulator/electrode is reading a perfect tan color.
I just got it running and took it out to a large parking lot for its first serious ride... I figured this old motor wasn't going to turn much over 5000 rpm but its definitely a torque monster. Its got a strong launch and I'm guessing its topping out around 50mph or so.
I've been checking around and haven't found any "off the shelf" speed parts made for this model. I'm looking to build a better pipe soon and wanna locate (or build) a nice intake manifold to install a 28 or 30mm Mikuni carb/air cleaner. I was thinking about checking out a local motorcycle junk yard for likely donors.
I've got a couple buddies finishing up their older sprint kart projects right now and we'll probably be doing some parking lot racing soon.
My town has this 1/5 mile dirt oval kart race track: http://www.azkarting.com/default.htm and I've been thinking about bringing it out to a few practice sessions to start, these guys are pretty fast and I figure I've got a lot to learn before racing there. We've also got a couple sprintkart tracks here but they dont seem to have any classes that allow 4-stroke engines.
I'd appreciate any info, advice or comments you guys might have on my project here.
Thanks.
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(Edit:
I ended up having major problems with my carb flooding simply because the extra-large sized fuel pump I'd used developed way too much fuel pressure/volume, and this overwhelmed the little needle and seat valve in my stock Honda carb causing flooding problems.
My original fuel pump hookup worked just fine at first, my carb only developed these flooding issues after I'd started seriously racing my kart at a race track.
So... I ended up totally modding my fuel system to have a "return line" with an adjustable fuel valve installed. This lowered the fuel pressure/volume reaching the carb and I never had another flooding problem after that.
At the same time, I'd also installed a marine-type, fuel primer-bulb, in-line with my fuel supply input line to the pump, simply so I could always prime my carb for easier starting.
Here's some pics of how my fuel system is plumed and all set up on this same kart nowadays:
That small secondary plastic tank you see (mounted over the top of my regular fuel tank) is simply hooked up to the breather hose in my gas cap. The purpose of this "fuel tank breather catch-can" is simply to catch/hold any fuel that would spill and might leak all over me in case I ever flipped my kart and was pinned underneath and unable to get out... just for added safety.
You can also see the 3-stage race header (W/aluminum support bracket) I built, along with an RLV-racing muffler, and my race-type air cleaner with a crankcase-breather filter all installed in these pics below:
It does have some digits stamped into the frames R/R axle bearing mount that read: CIK 004 n.10 82.
I googled "CIK" and it seems to be a European go kart racing association and not a specific kart brand...
This kart has lots of metric hardware and my local sprint kart shop guy thinks its an older Biesse (Italian made) chassis.
Any of you guys have any idea what brand/model/year this thing might be?`
I've had this older (1977) 406cc. 10-h/p flathead Honda (model G-400) sitting around the shop here for years just waiting for a kart:
So... I bought some very strong 1/2" aluminum plate from a metal-scrap yard ($10) and cut out a motor-mount adaptor to bolt this beast of an engine directly to the much smaller bolt-pattern of the 5hp Briggs motor mount that came on my kart.
After doing a LOT of research on the net, I decided to buy and use this Noram Star #35 / 1" bore centrifugal clutch model: http://www.out2win.com/catalog/noram.html#star
(I selected my clutch with the 18 tooth driver option, and used the same 65 tooth rear sprocket that came with my kart. I bought a new #35, RLV brand 'Gold on Gold" model chain)
I drilled a hole in my carbs factory plastic, heat-insulator, and installed a 1/4' barbed-fitting, to slide a hose on, that supply the pulse-signal, that is used to drive/operate the large-round Mikuni pulse-fuel pump you can see mounted on the frame in the second pic below:
So far, my engine mods have only been to disconnect the governor and build a home made straight pipe. I'm planning on slowly enlarging the original carbs main-jet until the spark plugs insulator/electrode is reading a perfect tan color.
I just got it running and took it out to a large parking lot for its first serious ride... I figured this old motor wasn't going to turn much over 5000 rpm but its definitely a torque monster. Its got a strong launch and I'm guessing its topping out around 50mph or so.
I've been checking around and haven't found any "off the shelf" speed parts made for this model. I'm looking to build a better pipe soon and wanna locate (or build) a nice intake manifold to install a 28 or 30mm Mikuni carb/air cleaner. I was thinking about checking out a local motorcycle junk yard for likely donors.
I've got a couple buddies finishing up their older sprint kart projects right now and we'll probably be doing some parking lot racing soon.
My town has this 1/5 mile dirt oval kart race track: http://www.azkarting.com/default.htm and I've been thinking about bringing it out to a few practice sessions to start, these guys are pretty fast and I figure I've got a lot to learn before racing there. We've also got a couple sprintkart tracks here but they dont seem to have any classes that allow 4-stroke engines.
I'd appreciate any info, advice or comments you guys might have on my project here.
Thanks.
_______________
_______________
_______________
(Edit:
I ended up having major problems with my carb flooding simply because the extra-large sized fuel pump I'd used developed way too much fuel pressure/volume, and this overwhelmed the little needle and seat valve in my stock Honda carb causing flooding problems.
My original fuel pump hookup worked just fine at first, my carb only developed these flooding issues after I'd started seriously racing my kart at a race track.
So... I ended up totally modding my fuel system to have a "return line" with an adjustable fuel valve installed. This lowered the fuel pressure/volume reaching the carb and I never had another flooding problem after that.
At the same time, I'd also installed a marine-type, fuel primer-bulb, in-line with my fuel supply input line to the pump, simply so I could always prime my carb for easier starting.
Here's some pics of how my fuel system is plumed and all set up on this same kart nowadays:
That small secondary plastic tank you see (mounted over the top of my regular fuel tank) is simply hooked up to the breather hose in my gas cap. The purpose of this "fuel tank breather catch-can" is simply to catch/hold any fuel that would spill and might leak all over me in case I ever flipped my kart and was pinned underneath and unable to get out... just for added safety.
You can also see the 3-stage race header (W/aluminum support bracket) I built, along with an RLV-racing muffler, and my race-type air cleaner with a crankcase-breather filter all installed in these pics below:
Last edited by a moderator:
ing over that kart! Nice!
I love it ! 
