Bultaco

Thanks for all of the suggestions, help and personal messages offering assistance. I have got the cases back together. I heated the right side in the kitchen oven when the wife was out and it slipped right on without even using a rubber hammer. I have now started to assemble the ignition/flywheel, the gearshift etc.... I just need to get a few new things a seal, a lock nut for the kickstart spring holding nut ( is that avaliable?), the four long studs to hold the cylinder and head, a new set of rings (which i have to figure out what size they are), a holding washer for the sprocket, so really not all that bad considering it came to me as a basket of parts that changed …

I plan on upgrading the stock 28 mm Bing T84 (the slide is badly worn and I'm told virtually impossible to replace) to a Mikuni 28 mm TM flat slide, VM 28, or VM 26 round slide. Does anyone have experience with any of these carbs on a 199A? Will the 26 mm work well or is it too small? I've been told that the smaller bore might boost low rpm performance. What jetting/needle combination works at 1500 - 2500 feet? Thanks! tightwoods

Hi, Does anyone know if I can delete pics I've uploaded to this site? I've reached my limit and can't upload any more. Cheers.

Had a bit of a bump ..... is this a biggy gears seem to still work what do you think ? any kind of feed back would be helpful please I new it would only be a matter of time BR

Desperate to get the Sherpa finished in time for the Bultaco Club UK do at the end of July. I still need an inlet manifold ( never had one as bike came in bits ) part Number 158.10-029 and the original swingarm isn't straight so i could do with that as well ( not 100% sure but think it's 159.03-002 ) if you know of anyone who has spares lying about please ask around. Any help would be much appreciated.

I'm interested in using friction material plates but NOT the more expensive Barnett ones for bultaco. read on here about using certain Japanese bike plates and it looks like the kit that is sold by Bultaco UK(?) uses that type plate evidenced by much bigger inside dia. Anyway, all these plates are listed as 110 O.D. but I'm measuring the Bultaco hub I.D. right at 110. are the plates slightly under or do they have to be filed down to fit? I know the tabs are wider but I'm talking about the diameter of the plate fitting the dia of the hub. unfortunately I just buttoned up the clutch side on my son's 87 Honda cr80 after inspecting the clutch. at the time I wasn't …

hi guys a wee question i have been getting a bit of rebound last couple of trials ,moving quickly over rutted ground say,but nothing when lifting in a section --- the springs are recent and the longer type (happy with them) oil 15wt newish 180cc seals fine everything tightened down. this bike is trialed every week my question is ----how much oil do i lose (fine mist)through the valves? more than i thought maybe,have topped up with 25cc more any thoughts on this ,will know better after sun. cheers mur ps sherpa

I have a 175 Bultaco Sherpa with a very poorly engine that apprears to have eaten its 'self in pieces. If I can find the parts I would like to rebuild the original engine at some point but does anyone have a 250 or 325 engine for sale that would fit straight in to get me riding again? Any help would be much appreciated!

I noticed that the Yrjo Vesterinen 340 'works' Bultaco, as advertised on eBay recently, sold for a whopping 8750 squidlettes (at least I think that's what it went for - I was too shocked to really concentrate on the bidding). Is it just me or does anyone else think this was a tad over the top? Maybe I'm just getting old (er, what's with the 'maybe'?).

Comerford Vesty Bultaco This bike advertised on Trials central is not what it says it is......... Dave Renham Bultaco Uk Tel: 01784 440033

As on the APICO/VESTY UK stand at this years UK Dirt bike show at Stonleigh- Vesty's 1976 works Bultaco Sherpa- Go check it out if you are going tomorrow See also the SUNOCO riding suit !-

Does anybody know where I could watch this video: http://www.zonatrial...sp?codigo=1575. It does not seem to be online anymore. Thanks.

So , as original Mahle piston pin clips are getting a little thin on the ground at my house,have any of you guys found any user friendly easy to obtain modern replacements? For the 250 and 350?id like to stock up.Thanks! 🙂👍

I was wondering has anyone used viton oil seals in a engine rebuild ? I use them every day in pumps and mixers in chemical works and they work well and out last the bearings. But the only downside is they groove stainless shafts more than nitrile ones do. Just a question to see if anyone has had a go before I do.

Wahoooo,my Sherpa just arrived.1st one I’ve seen in the flesh lol....GREAT

Hi all I know its a longshot but does anybody have the side panel/airbox cover assembly for model 49 they no longer require and wish to sell, battered doesnt matter as i can repair or make up in fibreglass if reqd. In motion sell them but out of stock at the moment. There is one on ebay with a fuel tank but at £185. Thanks derek

WES were advertising alloy club foot replacements in the classic Scottish program. Anyone seen one yet? Any idea of price?

Hi guy's, don't worry it is not another what bike thread but more of a what Bultaco to get! I am restoring a Montesa Cota 247 just now but was wondering what the most popular Bultaco to get hold of to restore. Any models to avoid? thanks in advance. John.

I have a love for all two wheels this one stood out for me . what engine from bultaco is it based on anyone knows please or a one off ?

Hi everyone I've just joined up. I've just bought a bultaco lobito 175???? Early seventies but the engine numbers start with m-8 and the frame numbers start b-8. The bike was imported from the states not by me on other sites are saying it's a model 80? Which makes it a 1971 sherpa? Is this correct i will post some pics tomorrow it certainly looks like a mk5 lobito but the matching numbers have certainly thrown a spanner in the works. Any information much appreciated regards Lee Stephens