Bultaco

does anyone have any experience of dave renhams electronic ignitions ? are they reliable ? are they worth the money ?

Hi, anyone recommend a company in the Newcastle/Durham area who can rebore my barrel? Cheers

My Alpina Model 188 was originaly fitted with a battery. I do not have a wiring diagram but I assume that it will need to have a rectifier fitted. This was missing when I bought the bike. Rather than trying to track down an original rectifier that will probabaly be old stock, expensive and not work anyway I was planning of fitting a simple bridge rectifier from RS or other supplier of choice. Has anybody had an experiance of a similar mod and can give advice? I think most owners will not have expriance of Bultaco's with batteries so am not expecting a reply but thought I would ask anyway. To be honest the bike will very rarely used in the dark so if the charging sys…

Can somebody give me some advice or whati could possibly do to get my bultaco alpina 250 to start up? Im getting spark and gas comes out of plunger on carb but I can put starting fluid in it and it still won't even try to start.. please help thanks art

Is there any specific symptom that can be caused by a partially blocked (or misplaced baffle) in the front muffler please, before i cut it open? I have a running problem only when crawling along at up to 1/4 throttle opening - pinging / jerky / like pre-igniting. Bike is very responsive otherwise. Have new seals , bearings, piston, carb, ignition. Have done a leak down test - ok. Have tried a lectron / bing / oko carbs all with different combos of jetting. Have tried different timing settings. Muffler was repacked not so long ago by cutting a section out of the back near the bracket and maybe i was too aggressive at stuffing material back in and dislodged baffle??? …

Hi gents, my front brake is in need of a new liner, had a steel one put in the back last year, which is a massive impovment but some one i was talking to at a recent trial suggested cast iron was better for braking performance and only weight a cat wisker more. What do you guys think? james

Good 'fun trial' this evening, couple of Bultos having fun https://www.flickr.com/photos/76022002@N08/15371100842/ https://www.flickr.com/photos/76022002@N08/15371389175/ https://www.flickr.com/photos/76022002@N08/15184691948/

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?

hello all ive just bought a 198A with white mudgards and would like to put original blue mudgards on. but cant seem to buy the darker blue ones dose anybody know were i can buy them from?

The piston diameter on my 198B is 73.75 giving a size of 256cc. The underside of the piston is stamped DINAMIN, and although the piston and bore are in good condition I wonder if anybody knows if this was a fairly standard mod just to maximise the capacity rather than being overbored so many times over the years for some strange reason. Also does anybody know what bike would this piston? might have come from? GasGas perhaps?? The InMotion site shows piston sizes up to 73.00 only. Thanks.

Hello! I have two old Sherpa T's that are in very nice shape and as far as the body work goes, and as such I would like to pull the original body work and preserve it while ridding with non original body work, but both tanks would be in need of repair to be functional as one has a crack and the other is missing one logo and has a hole. so my questions are, would the tanks be worth preserving at this point? I have all of the original paperwork, tools, bags, accessories, etc with them and can see how even having the original tanks would be a plus, but with the damage would any reasonable person here share that view at all? If not I'm inclined to simply repair the tanks an…

hello guys still got oil leaking from the end seal on the front gear shaft. ive tryed unblocking the tiny vent hole with a bit of wire may be i didnt unblock it proper i dondt know. i did put a new seal behind the front spocket and oil seal. and allso a new bush. the new bush i replaced was stiff to turn is this because its new? could it be the o ring not on proper? the oil is comming from between the iner and outer shaft not the center where the push rod gose. help please. ive sorted the primary chain needed replacing with a new one witch i got of bultaco uk the old one was streched .

I'd like to hear some evaluations from those that have used them. It seems to me that a 325 has plenty of power, but I wonder if an ignition with an advance curve would noticeably widen the power band by letting the engine rev higher. That would likely rerduce the need for shifting in a section.

hello all dose anybody know where i can get a spring for the clutch Arm? inmotion dont sell them anymore. i know alot off you dont put them on but i want to so any ideas where i could buy the spring would be great.

hello guys ive just got a 198A the frame and swing arm are at the body shop being sandblasted. im looking to puting new bushes in the swing arm i was looking at the rolling needel bearing kit billet parts do but cant get hold of whyn so im thinking of puting the standard bushes back in from inmotion. as anybody fited them? whats the best way to fit them ive do the needel bearing kit before would it be beter to have them pressed in?

Just a quick question Is it possible to fit the pursang or frontera 370cc barrel on a 138 Alpina 350

About 30 years ago, my family used to own a mustard colored 250cc Bultaco Sherpa with a Francis Barnett engine. this was in the northeast of England. I know it was sold on when I was young, I was gutted as I didn't want mt dad to sell it. it a long shot but has anybody here ever come across a mustard colored Bultaco?

Hi people have joined recently to learn more about the bultaco range, does any body know where I could get a copy of the following book, Historia de la Sherpa T (The story) many thanks, Andy

hello all what you guys useing to paint your engins? pj1 was the best but cant get it anymore so whats the best alternative? ive tryed the black satin from bultaco looks ok but abit glossy dont want to use the BQ stuff thats to dull any help would be good cheers bondy. hi have read the thread on this now but if theres any new info bring it on

I want to remove the rear frame loop on my 199A. Can anyone post closeup photos of the rear fender mounts on a 199B, or of a similar modification, that I can look at?