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pedronicman

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Posts posted by pedronicman
 
 
  1. Pursang models had a duplex chain (double row) so had double row teeth on both the clutch basket

    and the crank weight,

    so no it is not a pursang one as all sherpas (apart from one model in the early 70's) used a single row configuration.

    There were however a few different weights of various bultaco bike/models but sounds like it has been machined/modified.

  2. The original standard bore of a 325cc sherpa is 83.20mm

    BUT your engine could or could not have re-bored to a bigger size over the years

    and necessarily be still on the std bore.

    So you will need to measure the bore to see what piston size you need.

    ta

  3. I am soon in need of a new van , currently have a 04 kangoo , which have had from new and has

    been very very good.

    Am thinking of getting a new version kangoo (will buy a new van which ever make i get)

    but can anyone tell me if the new shape berlingo/partner is bigger than the new kangoo

    as regards getting a trials bike in straight rather than diagonal and is it easier

    to get 2 bikes in the berlingo than the kangoo?

    Don't think the peugeot/citreon reliability will be a problem on a new van

    but do the have any issues i should know about?

    Dont want a bigger van , had a scudo a few years ago and as i drive around

    all week with the van being empty it seems pointless driving a bigger

    van around and wasting deisel.

    Cheers

  4. Carb should be a 627 - typo?

    Gear selector mechanism can be looked at by removing the clutch cover and removed without having to remove the clutch. Only 3 screws hold it in place. Check that the spring is fitted correctly or not broken. It'll be obvious when you check it. Lever position is up to you but angled up is better to help avoid it catching. Vertical would be a bit extreme for me...

    Best drain off old oil and start with new. Clutch 300cc of ATF (ok as plates are all steel) Gearbox takes 600cc and normal Silkolene light gear oil will be fine, or other equivalent.

    The engine will be pretty much the same as your old Alpina and if the Alpina was an early one, they are pretty much the same bike, different gearing, big tank and seat.

    clutch ATF oil should be 250cc not 300 , Gear box oil should be 500cc.

    Only the 1st 325 (92 moodel) and 2nd 325 (125 model) had AMAL mk1 carbs , after that all 325's were fitted with Bing as std

    You do need to set the timing correctly , ALL sherpas had different timing to one another , no manual will tell you the correct

    timing other than the original 91/92 owners manual , or email bultaco uk.

  5. 198B Models were NOT 6 speed, only the 340 was six speed , no other

    sherpa was six speed and certainly not a 125!

    Bultaco alledgedly made 10 198B 6 speed bikes for one order that went

    to france and thats it ,no more.

    There was a 6 speed pursang mx bike but not a sherpa.

    The cases on a 125cc sherpa (185/185B) model has a smaller base gasket

    and stud pattern , so making this a 250 is impossible.

    A 221 model 175cc sherpa is basically a sleeved down 250.

    Woody , you know who I am , but I thought your knowledge would have been better

    on this one!

  6. Hi, After abit of a look on the net for a new disc rotor for the front I have found the VEP wavey disc rotor, has anybody had any experience with these rotors? At

  7. I have recently replaced the crank seals and also the large O ring on the disk valve cover but engine oil still seems to be getting through into the cylinder. Bike smokes a fair bit as a result. Does anybody have any ideas of what else I can do to stop the engine oil getting through?

    I would be 100% sure that the gearbox oil is passing between the centre crankcases

    as it is only sealed by sealant as thhese engines aren't fitted with a centre gasket.

    If you split the engine to fix it make sure you use a good quality case sealant

    like THREEBOND engine sealant.

    Do not use silicone houshold sealnt.

    Cheers

  8. The reason why the Sherpa stator plate has no mark on it

    is because ALL sherpas use DIFFERENT timing to one another

    they all have a differnt timing spec to one another.

    The newer generation electronic ignition systems that

    Bultaco UK sell have an automatic

    advance and retard built into the system so no

    need to set to different positions as this takes care of it.

    No need to adjust anything , no timing ,no strobe light

    or anything needed - just bolt it on and ride- simple.

    It can only be mounted in one position - no hassle!

    • Like 1
  9. Hi All,

    Was getting my stuff together this morning to go off for a ride and noticed that the bike was a bit wet. Having started the bike, there was definitely a flow of water coming from the cooling system. It appeared to be coming from rad, but I couldn't really see whether it was actually the rad or one of the connecting hoses.

    The bike has overheatted (blown out steam) twice fairly recently. In both cases I killed it straight away and let it cool down, checked / added coolant as required and it was ok again. I'm guessing if there is a leka in the system it makes sense for it to boil over?

    So, can I repair the rad (with rad weld or something similar) or am I looking at replacement partS?

    Anyone with any knowledge can no dount shed some light on it for me

    Thanks in advance,

    Dave

  10. The M199 Sherpa T was produced from around 1978 to 1980. For this reason it would be impossible to date the bike unless it has registration papers.

    Give Bultaco UK a call, tell them your full frame number and they will be able to tell you the date the bike was imported into

    the UK , and therefore determine when it was produced.

    Thanks

  11. just drove 450 mile round trip to pick up my bultaco sherpa i bought from the bay not sure what year it is starts with JB 199 also need a carb and exhaust had a look on the bay nothing about any body know where to get second parts from

    Try www.bultacouk.com

  12. Some further info. re 198 models as they left the factory -

    Frame with bottom tubes and welded bash plate used up to serial #19801769

    Frame less bottom tubes and with alloy bash plate factory-fitted from serial #19801770.

    (according to the appropriate parts book, and unless someone out there knows differently, of course)

    198 MODEL - Frame has bottom tubes and welded grille type bash plate

    198A MODEL - Frame has NO bottom tubes and is fitted with alloy bash plate and strengthened swingarm

  13. more info-

    ##198##### 1978/1979 Badged as a '250' (238cc) 5 speed ,Silver frame /red mudguards,red side panels and red tank

    ##199##### 1978/1979 " '350' (325cc) 5 speed , Colours as above

    Both models above have frame rails under engine with grill type welded on bash plate

    ##198#####-A 1980 " '250' (238cc) 5 speed, Blue frame,blue mudguards ,blue side panels and blue tank

    ##199#####-A 1980 " '350' (325cc) 5 speed , Colours as above

    Both models above had NO frame rails ender engine but had a thick alloy bash plate instead

    ##198#####-B 1981 " '250' (238cc) 5 speed ,WHITE frame and white mudguards,blue side panels,blue tank,blue yokes and forks

    ##199#####-B 1981 " '350' (340cc) 6 SPEED Colours as above " " "

    Both models above had NO frame rails ender engine but had a thick alloy bash plate instead

  14. Any decent footrests available for the Sherpa that don't involve serious welding/machining/fettling or is this the only option?

    No, not really , you can fit Bultaco Pursang footrests , which are the same but longer

    than the std Sherpa ones.

    cheers

  15. No translation issues with numbers: Manual says .9% or 110:1. Also factory has told me you can run down to .7% or 140:1. If i knew i was running long roads / trails I wouldn't run 140:1 either. Point being .9% is as high a mixture as you go on the efi Ossa.

    cheers

    Think you need to check you info-

    pre mix ratios - 2% = 50:1 mix , 4% = 25:1 mix , 6.25% = 16:1 mix

    so i don't think 7% or 9% is 110:1 ratio is it!!

    Best check/change your oil mix before its too late....... :wall:

    Are you sure the 'factory' doesn't mean 110 octane fuel????

    If you don't believe me , then check ANY 2 stroke oil ratio chart........

 
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