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My diadora muds arrived today
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At 2 thou let it warm up before you ride it otherwise it may nip up and use a good 2 stroke oil
Dave
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That thick black treacle is un-burnt oil so its over-lubing the barrel. Either re-adjust the autolube or blank it off and mix in the tank and use a good oil or a fully synthetic one that will burn off better thou they all leave some unburnt oil behind
Dave
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The lobe rests on the casing at around 1 o'clock which is where the kickstart should be (and at a position that you often hit with your shin!!!) , if you put the kicker further forwards the lobe will puncture the mag housing case when you kick over fully.
Dave
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I re-bored my 247 to 00.003 thou, dont know the metric as i only bore in thou.
Dave
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Fit the bearings flush to inner casings then the crank, fit crank into the mag side first as the gearbox should rest that side then fit clutch side next.
Dave
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I use atf in my mont 247 clutch and ep90 in the g/box
Dave
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As you have got the new piston i would get it bored
Dave
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Hi,
my 247 runs on a bultaco piston without any probs and i did the re-bore. Go get it bored out and also check the small end and big end for any play
Dave
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Hi,
bearing size is 6205 for both sides, you must use C3 bearings for heat expansion,
Dave
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If they are 6005rs then they are the same.
Dave
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Just got my old mont 247 piston and the ring pegs are at the front around 10 and 2 o'clock as were the bult piston. Piston fitted had a rear window and 2 small front holes, made by GPM of Italy. It works fine
Dave
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I would put a mt43 on the front also, my 247 montesa handles fine with them and a good front will stop you sliding sideways on a sharp up-hill turn
Dave
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Thanks N/R and i would have been at the trial but i,m in Paris this weekend,
Does anyone know whether i can use a clockwise mag on my anti-clockwise mag bike as my one sparks either way so all i need to do is change the end plate with the manual advance on it or use the other mag armature or are the end threads l/h thread on clockwise and r/h on anti (mine is r/h thread). Armature number is 464205
Just trying to think of a cheaper alternative!!!!
Dave
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Thanks Brian and John for your reply,s and for Stuarts phone number. I have just got home and went outside and it started first kick and rev,s cleanly so its bloody annoying that it breaks down when hot but thats british!!!!!! at least i know it will be fine after a mag re-build
Dave
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With any luck not ron will see this post. The worst part is the bike runs superbly for 15-20 mins then nothing then it starts again,
Dave
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Hi, anyone know which lucas model a 1953/4 redditch 350 bullet would use as my mag has no identity on it but i,m sure its lucas without the dynamo attached. Basically it has a fat blue spark and runs fine with a nice low tickover but when its hot the spark dissapears and re-appears at will and this is rather annoying (also sounds expensive ) .
Its an anti-clockwise mag, also when the engine is running you cannot see an sparks on the points at all, is this normal?
cheers
Dave
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Hi, i fitted an oversized bultaco piston to my 247 mont and i never used a base-plate. The piston was the same gudgeon pin height, if i remember correctly you put a window in the rear of the piston unless its all ready done and i did my own re-bore to size
Dave
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Hi,
anyone know if a late 50,s 500 bullet alternator inner chaincase will fit an earlier (1953) dynano 350 bullet engine using the dynamo outer chaincase from my 350 bullet please as i am having probs getting the right one
cheers
Dave
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Hi, i'm preparing an early bullet 350 for trials and i have come across the letters HCM stamped on the top of the gearbox above the box number, anyone have a clue what they mean if anything?
cheers
Dave
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Hi , anyone have a rough idea of the best gearing for a 1955 350 bullet for pre 65 trials? Is it done on final drive sprockets or can you change the engine sprocket?
cheers
Dave
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That would be a victor 441cc and it would have been a road trails type bike a bit like a yamaha xt350 and would make a great trials bike
Dave
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Hi, nice bearing but not for your crank. You must use open bearings or prise out the seal but those Aren't C3 BEARINGS. C3 have a larger space between the balls allowing for heat expansion, that bearing will seize if it gets a bit too hot
Dave
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