right folks, got myself a 100cc rotax racing kart and its very fast but been watching videos on the net of SHIFTER KARTS. ive got a spare cr250 motocross engine i can put in it and wondered if anyone else had built 1 b4 or has any plans on how to fit the engine correctly. pics of the kart will be a added soon. cheers

 

My mate and i built this a few years back, but sold it before it was finished unfortunately. Excuse any continuity problems with the following as its been copied and pasted from an old thread.

engine is a gsxr 750 carb'd model from a 1984 gsxr 750, not quite as powerful as the modern day 750's but should be plenty quick enough to push a little go kart along *

the kart is a gearbox racing kart, with front and rear hydraulic disc brakes *

this is how it looked when it was collected










everything stripped off bar the rear axle as its seized in place *
chassis on axle stands ready to be cut and extended


we decided to extend it 500mm as that was the smallest distance we could get to allow the engine and exhaust to fit on the chassis twith the seat in position!

cut 3 lengths of tubing the same as the rest of the chassis, and slid them over the 3 bushes we made to make extending and keeping the kart inline as easy as possible. need another 3 bushes to continue anyway, no pics of those as yet, will sort sum out





seat rested in position



engine and seat rested in position




engine from behind with carb's on



engine and seat mounted to frame, front wheels and brakes on, steering wheel and rear driveshaft





heres a nice shot of the front hydraulic disc brakes



my mates been busy making progress with the kart *

cut the bike exhaust flanges off the manifold and fitted them to engine in preparation for making the manifold (excuse him being a fookin plum and struggling with counting to 4 * * )



mounted the race can



also fitted the air filters and carbs




fuel pump, fuel supply isolator and gear selector



i think the isolation valve in the fuel line needs to go before the fuel pump straight after the tank, will have to make him change it *


But the best bike engined kart ive seen is this Ducati 748 engined one







and a link to a vid of it racing a Corvette

http://videos.streetfire.net/Player.aspx?fileid=ed4a74cc-207b-4842-b85c-37177e8d3bd2

 

my brother had one of these karts.put this into you tube 'Isle of Man Formula E 250 Super Karting GP 1990' he sold it to a bloke who wanted to put a big bike engine in,but after he had a go in it at rye house kart track ,and couldn't get out of 2nd gear,so he decided to leave it as it was.no need to go bigger

 

mental vid mate