mark and tina needs help

elbantina · #1 (**permalink**) 05-07-2009, 09:27 PM

need help identifying this motor carby and frame all i know is that it is a motoworks 27 49cc . I have striped it alll and know rebuilding as bought secondhand,want to add perfprmance parts to it mabey a boost bottle.we would really appreciate the help(cant post picis 4 some reason will put in gallery or profile)

mark and tina ***

elbantina · #2 (**permalink**) 05-07-2009, 09:46 PM

worked out how to upload

morty · #3 (**permalink**) 05-07-2009, 09:48 PM

Hey... thats just a cag motor with a dirt bike clutch housing and gear box......
there's heaps of performance mods you can do to this to get it hummin'!
I'd recommend carbon fibre reeds, good exhaust, a head kit, and a better carby than that std one... before a boost bottle... I wouldn't waste your money... it's hard enough gettin your cag to be airtight 100%, without another place to cause problems... it's really not worth it for the performance increase!

good luck!! ... morty

elbantina · #4 (**permalink**) 05-07-2009, 10:57 PM

thanks for that one now we have somewhere to start.So will all cag parts fit?? How can u tell what size carby it is and can u just replace for a bigger carby without doing any other work(carby job)Also when i blow down the fuel intake hole in the carby it is really hard to blow through , is this normall(already cleaned in petrol) thanks peoples

morty · #5 (**permalink**) 05-07-2009, 11:37 PM

hey, yeah pretty much all cag parts are interchangeable... the carby size is the bore size of the carby, a std one is approx. 12.87mm... you can hone the std carby out a mm and a bit and just jet it a little bigger or if you get a bigger carb. you'l need a different manifold aswell.
your fuel tap must be in the vertical position on the carb. to allow fuel thru.. but regardless it'l be restricting anyway... just take the screw out of the bottom of the carby bowl to see if a sufficient fuel flow comes thru!

elbantina · #6 (**permalink**) 05-07-2009, 11:50 PM

can i test the fuel flow with the carby off or will it come out of other holes???also is the correct spark plug for this motor NGK bm6a ?? Could i put like a 19mm carby on and just change the manifold and everything would be sweet?? is this pici the manifold???(so many questions to ask)

thnx again

elbantina · #7 (**permalink**) 06-07-2009, 12:24 AM

just cross refrenced my jap spark plug and it cam up NGK bpm7a it has the same same thread,reach and hex to the bm6a wich of these would b better for performance??

MortysMiniMotos · #8 (**permalink**) 06-07-2009, 11:56 AM

Testing fuel flow without the carby is really only testing your fuel line and filter.

You could put a 19mm carb on it, but being a std motor...you'll have way too much air. stick to the stock carb or a dellorto 14/14 sha/rep for the easiest tuning options..

yes that is the manifold. you'll require a different manifold for the 19mm carby or a different one again for the 14/14 carbs.

bm6a plugs work better in colder conditions than bm7a (i think..or it possibly might be the other way lol) and the bpm7a plug is the platinum version of the bm7a...better still.

-gray

elbantina · #9 (**permalink**) 06-07-2009, 03:19 PM

shes not sparking know the fly wheel slightly touches the contacts in 2 places will this effect spark(flywheel dmight not b alaigned)can u change this

MortysMiniMotos · #10 (**permalink**) 06-07-2009, 03:46 PM

your flywheel is touching the coil?

take your coil off and cut a business card up and use that to space the coil away from the flywheel.

edit; for a more detailed explanation...try doing a search on this forum for spacing your coil.

mark and tina needs help

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