Bultaco

Hi, Does anyone have a picture of the 340 (6spd) gearbox please. Just rebuilding and I want to check the selector fork orientation. thanks

Quite happy with the way this is going so thought i`d put a couple of pics up to see what you guys think. I`ve got a new in-motion seat cover to fit and give the bike a good check over but its running well enough since the mikuni carb conversion has been fitted. Hasn`t been a cheap build but okay considering the state it was in when I got it. Another one saved from the scrap man.

Anyone tried any jetting settings?

decided to use the top end off another 340 that I've been restoring in order to save a little money putting my stolen bike back in service. I notice that the piston on this bike has no holes drilled in the sides as my other 340 has. Both jugs are identical. Will this make a big difference in performance? What is the purpose of the holes if the motor will run without them?

I have a 350 Bultaco from the seventies that is a definite restoration project, but I don't know just what it is. It has twin plugs which I thought would be for a quick change over mid section if the other plug fouled. But now I'm wondering if it is a moto crosser Pursang. Anyone have any thoughts on the matter, cos' I'm going to sell it and have no idea what to ask for it.

Hi, this is my first post here. I have most of an M116 350 Alpina which I got for $100 20 years ago and I have been slowly gathering up some of the missing parts. The main things I still need are a piston and con rod kit. While pistons are available new, they are quite expensive. Occasionally on ebay I see listings for NOS pistons from other models such as 360 Astro, Frontera, etc. Are any of these suitable? I believe I am currently at standard bore but as the cylinder is quite rusty it will likely need a rebore in any case. Alternatively are there any more common Japanese model pistons which can work? Probably I should just save up and get the proper thing, but any sugg…

My 159 is currently at 1mm oversize but could do with a rebore as there is some light scoring after the small end spacer broke up. Is there a bigger oversize than +1mm or will that mean a new liner or scrap the barrel?

Have fitted new points condenser and spark plug. Bike won't tickover, the air screw and throttle slide screw have no effect. The pilot jet is a 40 and main jet 123 as checked by Bultaco uk. I have had the float level and needle up and down no difference - bing carb. It starts first or second kick but just won't tickover yet you can keep it at a near acceptable tickover a speed on the throttle cable. It revs slowly. I took the silencer off (original big black thing) and was going to see dremel it and repack it but it blows through fairly easily and I just can't see it being that that is causing the issue. Any ideas? Where is the advance retard on these? I bought the manual…

Has anyone out there got a set of 35mm Betor forks and yolks that they want to sell? If so give me a call on 07967 332668 or email jonnyburrell@msn.com

Now that the 4 speed Bultaco is approved for the Pre 65 Scottish has anyone entered one.

This year is the 50th. aniversary of Bultaco CEMOTO 1958-2008. Trials bikes started to be built in 1964 with the first 3 prototypes of the Model 10 "Sammy Miller". Happy birthday, and thanks for so many trials enjoyed. Thanks BJ for this pics, it would be nice to see more Bultaco photos here.

Looks nice.

Hi all Can anyone help me with any photo's to help me see whats there or not as i'm trying to sort one out for a friend. He reconds it's got a miller tank cos he has just got a new cap for it (

Can some one please confirm if this bike is in the Sammy Miller Museum or privately owned in the West Country. Confused in Bristol Kind regards Martin

A friend of mine has just ridden his 250 Matador across Spain, this week from Santander to Mijas, near Malaga The old Bult 250, didn't miss a beat, all day every day Here's his journey http://www.ukgser.com/forums/showthread.php?t=333953

Gents, I've noticed on the bultaco brochures (on Todotrial website) that the model series 124 & 150 have 1315mm wheelbase listed as opposed to 1330mm for earlier Sherpas. Can anybody tell me: 1) is that true - ie did they really have shorter wheelbase? 2) if so what was changed from previous models (M91, M80 etc)? Was it shorter swingarm, steeper rake, less offset on the triple-clamps or what? There is a bit of an explanation on todotrial, but its in spanish & I can't read spanish & it doesn't make any sense attempting to translate with my spanish dictionary or with google translation. Can anyone translate: "gracias a un menor avance de horquilla" Any…

1976 Bultaco Sherpa T 350 basket case roller for parts. Missing head, cylinder, triple tree and handlebars. Bottom end turns over, good wheels, tank, seat pan, pipe, etc. The real deal here is the new never installed VAPE electronic ignition #7269799AC with instructions. Have a new Mukuni carburetor for the Sherpa 350 as well. $600 or offer. If you can use this stuff call 269-781-7788. Located in south central lower Michigan just off I-94.

Finally got the proper seat to match

my alpi na is driving me round the bend,it wasnt running when i got it,i had the motoplat checked by bradford ignitions and everything is ok,ten got it running,but running very flat and smoking,and wont idle,so i renewed the engine seals,still running flat and smoking,so rebored with new piston,still flat and smoking, what now ? ive cleaned the carb out everytime so far,ignition is at 2,6mm btdc,looking like a complete strip down now,when i spun the flywheels i noticed there was some oil at the bottom of the crankcase,which came round when i spun them,could this be the gearbox leaking ?anyone got any ideas cheers andy

Hi all, Could anyone tell me should there be some sort of seal/rubber betwwen the rear exhaust section and the middle silencer on a 78 Sherpa. If not what stops gasses leaking from that joint. My bike leaks from there but because I am out of country I havent had a chance to strip it yet. It would be handy to know so I can order parts ready for when i get home. Cheers Marty