Bultaco Latest Topics

Bultaco Alpina 138 paint code/color

Wed, 18 Feb 2026 14:39:16 +0000

I am nearing completion on the restoration of an Alpina model 138 and am looking for the paint code, or the name of the orange/yellow paint on the side covers, and the swoosh on the tank. Any assistance or insight is appreciated.

Bultaco M49 Sherpa T Restoration

Sun, 08 Feb 2026 16:31:19 +0000

Hi everyone,

I posted in the welcome area but thought I would start getting this thread caught up to where I am currently at on my restoration of my Bultaco Sherpa T 250. I have done many other restoration projects but this is my first motorcycle project

The bike was originally purchased by my late Uncle Bud on August 21, 1970 (I have the original bill) and he used it mostly as a hunting bike as he had other bikes he used in trials riding. Fast forward to while I was in high-school it turned out my science teacher was the son of the Bultaco dealer for our area and knew my Uncle well

From what my Dad told me Uncle Bud was 2nd or 3rd best in all of Ontario in numerous championships at the time. Time passed and the bike sat since I believe the 1980s. At the end of 2018/early 2019 Uncle Bud gave me the bike before he got sick, and I always told him one day I would fix it up. At that time I was 21 years old and in college and didn't have the funds or time to embark on fixing it. Due to his illness Uncle Bud's memory faded and I had his tired bike in the corner as I took car of his property/small farm and said I would fix it up. He ended up passing away in October of 2024, I left work that day and went to reflect out in the shop, and knowing that his celebration of life would be hosted within the next few days I rolled the Bultaco out and spent hours detailing it to surprise both my parents and our family

I am still trying to learn the process of this forum so I hope I added the "barn find" pictures correctly

And this is ready for the celebration of life

Bultaco sherpa 199b

Sat, 31 Jan 2026 16:37:42 +0000

Hi all

I've had my 1981 199b for about 3 years now it was a bit neglected when I bought it since then I've replaced a lot of parts,paint work ect,new tyres I'd like to move it on as the wife doesn't want me to do any silly off road stuff just wondering what values are at this time,road registered with lighting kit ect

Amal concentric carb jets

Sat, 17 Jan 2026 18:33:11 +0000

I’m in the process of rebuilding the Spanish Amal 930 concentric on my 1971 Lobito 175 Mk4. The needle jet is stamped 106A, and that’s what is listed in the owner’s manual as the correct jet. Amal concentrics had long and short needle jets and some jets were for 4 stroke applications, with others being for two strokes. I have seen lots of Amal needle jets for sale that are designated 106, but not 106A. Does anyone know what the difference is? Thanks for any help!

Brake plates

Sat, 20 Dec 2025 17:37:22 +0000

Hello I have a model 92 Sherpa T 350 that I purchased as a basket case. I am trying to figure out if I have the correct rear brake plate. I have 2 rear brake plates but don’t really know how to tell if one of them is correct or not . I believe mine is an early 70’s model. Any help or pics you can post would be appreciated. I will see if I can some also.

199A Selector Pawl Orientation

Thu, 02 Oct 2025 07:30:53 +0000

The spring loaded pawls in the selector mechanism have a cut-out. Should this face inward to the spring or outwards to the drum?

Tracey Shewan

Thu, 11 Sep 2025 16:00:40 +0000

My dad is looking for a Bultaco Sherpa Trials 125 cc, engine number VM18501877-A 1977 barrel and piston and the piston is 55 mil

can you advise how I help him find please

Crank Binding

Thu, 04 Sep 2025 14:48:43 +0000

199A Rebuild progressed smoothly....until, the slightest tightening of the engine bolts and the ignition side crank flywheel is binding on the LH Crankcase. Main bearings are where they should be and the crank belongs to this motor. Any thoughts/suggestions please?

Also the crank pin isn't flush with the crank halves, on the LH side which is fouling, it is recessed, on the other half it is very slightly proud. Should it not be flush on both sides?

Sherpa 350 Crank Clearance

Tue, 02 Sep 2025 11:19:50 +0000

Just looking at a 199A Crank. No up and down movement in the big end but a lot of clearance side to side. Does this look normal?

Crank removal

Fri, 08 Aug 2025 08:38:37 +0000

Need to do engine inspection .. advice for splitting crank case . What needs to be removed ? Clutch ,crank weight . Mag off, oil seal carrier . Kick and gear off already hot air gun help?

Barn find Sherpa, what is it?

Mon, 18 Aug 2025 15:41:57 +0000

A funny thing happened over the weekend, I was on a green lane and as we slowed down at the end of the track an elderly chap came out of a house, flagged me down and asked if I'd like to buy a bike (like you do). Of course it's always impossible to resist and he took me into his shed and showed me a tatty old Sherpa which he said had been stored for the past couple of decades by his brother who had passeed away. The bereaved's family were going to put the bike in a skip but thankfully he stopped them doing that and rescued it.

I'm not too well up on Sherpas and it's a bit of a mystery to me, the chap thinks it might be a Sammy Miller High Boy but I'm not so sure. The last High Boy I owned was a TL 185 version back in the 80s and my memory ain't what it used to be.

Anybody any ideas what this is? The frame number, stamped on the head stock, is B 9203012 and the motor is M-9203037. The fact that the frame number is so close to the engine number makes me wonder whether somebody has simply chromed a Bultaco frame.

The tank unit is alloy and it has what looks like an original Sammy Miller sticker stuck to the underside.

There is also a large '3' stamped on the top tube.

Anyway, I've bought it!.

How do you tell the model

Sat, 13 Feb 2021 14:41:45 +0000

Is there a way to identify what model/ cc a Bilty is from the frame number or engine number...?

Help appreciated

Regards Gary

very poorly sherpa 175

Sat, 05 Jul 2025 22:18:26 +0000

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!

May 26th 1978 Ex Ssdt Very Special Works Sherpa T

Tue, 09 Feb 2010 21:01:00 +0000

Hello Chaps,

One for you Old School Bultaco Boys...(Legs included)

Motosinge83

M116 Alpina 350

Thu, 29 May 2025 11:02:12 +0000

Looking for an airbox for a M116....1974 Alpina 350....I'm in the USA

Matador Mk2/Model 16 Cylinder and Sherpa T Model 10

Thu, 13 Feb 2025 12:25:04 +0000

Does any Bultaco expert know if the Matador Mk2 Model 16 (4 speed) CYLINDER is the same as the Sherpa T model 10? My Model 16 cylinder has come to the end of its life. I acquired the bike with a 74mm piston and now it needs another rebore. Unfortunately, the commonly used Wiseco piston (that you need to cut 10mm off the inlet side of the skirt) don't come any larger than 74mm. I contacted Wiseco and could make a batch of 12, but that's more than the bike is worth, and I don't have the upfront cash to hold them and try to sell the extras. Also, I struck out on finding a cylinder liner. So..... I have found a Sherpa Model 10 cylinder or jug as some people call it in good shape. Of course, I'd fit it with a new piston. I've only seen pictures of it, but it looks like it is the same as my Matador's cylinder.

Can anyone confirm if they are the same cylinder?

Thank you

199 1978

Mon, 27 Jan 2025 18:22:21 +0000

Hi guys back again after a long while .

Would anyone have a 199 rear mudguard

In ised condition as a new item just would not suit the bike

Cheers in advance

Revved up for no reason

Wed, 22 Jan 2025 09:38:42 +0000

Arrived home from short ride out and she revved up for no appararent reason i immediately thought throttle stuck open but no, then quickly fiddled with cable at the carb but no, tried kill switch but no(even at idle would take a second or two to knock off need new switch perhaps) put into gear but just spun back wheel up ‘cos was on gravel so let front brake off and aimed for tree 2 yards in front phew that did it, now struggles to start sometimes gives a pop or a fart but no start and sometimes will run for a few seconds then if you give any throttle dies. I took carb off checked an cleaned it all ok taped up split hoses to airbox and inlet swapped plugs but still doing same, have i done any major damage? it probably all lasted for about 8 seconds

Tank repair

Wed, 15 Jan 2025 11:10:09 +0000

Hi, Iv’e been recommended Caswells tank repair kit from the guys at inmotion can anyone tell me where i can get it from please? in the uk, iv’e found surface monkey but the smallest size treats 33 litres at £60 iv’e only got a 6 litre tank

Matador 4 speed 200/250 transmission gears

Mon, 06 Jan 2025 16:56:24 +0000

Anyone know if the 4 speed Matador 200 has lower transmission gears (geared slower) than the Matador 250 (MK2/Model 16)? I can't find any specifications (trans gear ratios) on either. If yes, are the transmissions interchangeable? Thanks.