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Hi, anyone know if there are any other type of piston that can be used as tarabusi o/sized are getting hard to find. My 247 is on std but with a lot of wear so it may have to be bored to its 2nd o/s which, i think , is 73.5mm and i cant find a piston to fit that doesn't cost a small fortune or one that does!!!
Dave
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If it has the wavy finned head, 6 speed box and frame tubes under the engine it may well be a 348. Check the frame number on the headstock as the 1313 are case numbers eg 13 is l/h and 13 is r/h and should have the same number as they would have been machined together
Dave
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If it was fine before the cable change then the throttle cable/carb has been disturbed
Dave
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Cheers for that but ain't they very expensive for parts!!!
Dave
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Is it a 6v or 12 volt system? as the 6volt just has a single wave rec fitted
Dave
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Its sheer-joy when they come off and the gear cluster looks pretty good so it should be ready to trials pretty soon with plenty of spares left over!!
Dave
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I actually use 11/53 with a 428 chain and i like the extra low gearing as it enables me to use higher gears which will spread the load away from the lower gears
Dave
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Not quite, the bore measured up 72.5 and the piston just under but my new std rings have a 3mm gap!!!! something is wrong somewhere.
Dave
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No, use a big heavy hammer as its the jolt that gets the gear off . I have just removed the same gear off of my 247, i just used two long tyre leavers , one being pushed by my knee and the other by hand and i walloped the crank end with a thor copper and hide hammer once and it came off
Dave
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I would leave it weighted as the weight helps bottom end running
Dave
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Its not a greeves its the xispa proto-type
Dave
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Dave Renham didn't have them in stock but Sammy Miller has and its winging its way to me as we speak (type) but he did have the rings i needed and the bush for the kickstart shaft
Dave
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Pull the carb off and check the pilot jet isn't blocked
Dave
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Thats my next port of call but all the rods i have seen have been for cappra's etc
Dave
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Sorry forgot to say that its a 1976 cota 247
Dave
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Hi, my latest project is getting costly as i have just pressed apart the big end to find the rod is ovaled and knackered. Anyone know where i can get a kit from or at the least a serviceable
rod?
cheers
Dave
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I have just split the cases and changed it as the bike came with a new shaft
Dave
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I will be splitting the cases as the big end has a bit of up and down play so it looks like a complete re-build job. Funny enough the shaft was OK and its the kicker that was worn but by putting in a new bolt and doing up correctly it holds fine
Dave
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I posted this in the montesa forum but i should have posted it here,
Hi, can you change the kickstart shaft without splitting the engine? silly question as i split a 349 a few months ago and i just cannot remember!!
I have been offered a 1977 one with the splines stripped.
cheers
Dave
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Hi, can you change the kickstart shaft without splitting the engine? silly question as i split a 349 a few months ago and i just cannot remember!!
I have been offered a 1977 one with the splines stripped.
cheers
Dave
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Have a look at the links on a honda chain to see what is stamped, it may be h/m as all genuine honda manufactured parts have it or it could be DID or nothing at all but worth a look as it may save a lot of money
Dave
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The bultaco engine would be a better lump. Those 250 triumph/bsa lumps ain't very good
Dave
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go for the 500, too much power is better then not enough
Dave
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But where do honda source their chains from?. I remember when i worked in a m/c shop and a guy came in asking for some honda 2 stroke oil which we had run out off so i told him to buy some ELF 2t as it was the same oil but half the price because elf was sponsoring honda racing and his answer was ' i wouldn't put that crap in my bike' , there is no pleasing some people
Dave
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