DR750 & DR800 owners thread

Discussion in 'Thumpers' started by MCmad, Jul 14, 2008.

  1. Simosez

    Simosez Been here awhile

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    cheers Rob. i'll see how i go, things are a bit busy at the moment. i might try and meet up with you for the day ride.
    how is the river? have you had the sort of rain we have had east of the range? the rivers ar raging over this way.
  2. robmoto

    robmoto Long timer

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    Simon not much rain over here really we are missing out, although not bone dry.
  3. mait

    mait Been here awhile

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    Thanks Ray. This is what I thought myself, too. Why did I ask it was because SR43A camshaft is still available as Suzuki original part. While SR42A camshaft is superceded and replaced by SR43B type camshaft AFAIK.
    I have DR800 SR42B and the idea was to release some more potential from the engine with less restrictive "A"-model camshaft.

    If you know of any reason why these two (SR42B engine and SR43A camshaft) should NOT be joined together in holy DR Big, speak now, or... I may be screwed :D

    I think I've read in German Big forum (with the help of google translator) someone had SR43 camshaft in SR41 for a year without problems, so it should be working fine in SR42, too.

    BTW the 106mm pistons are not ready yet. I have no idea why it is taking so long. Or maybe its just me being impatient.
  4. wundis

    wundis Adventurer

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    Perhaps it's a good time to discuss this publicly rather than ask mait in private :ear

    To add up to his question:

    Since my camshaft is worn beyond recognition (ok, i may be exaggerating a bit here) and I am still considering multiple options on what to do with it. Does anyone of you know if one can use a brand new SR43A camshaft (12711-31D00 ) on a SR43B (in a perfect world the camshaft should be 12711-31D10) bike with SR43B CDI (32900-31D10) (again, in a perfect world A camshaft should go with A cdi (32900-31D00))? That is taking in mind the differences between the camshafts and cdi (different timing).

    PS as an alternative, I am considering using local camshaft restoration services from a reliable shop, they do that for 72 eur (that includes restoration of camshaft and 2 rocker arms). On the downside - I don't think i would be sleeping as calmly with this restoration as with HRT services, but the difference in price (and transport) is playing a big role here.
  5. Resi

    Resi Been here awhile

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    Hi Mait, they should be interchangeable... ;)


    Yes. I don't know who does your pistons, mine took about 4 or 5 weeks...

    Cheers,
    Lars
  6. mait

    mait Been here awhile

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    Lars, 5 weeks to make the pistons was what I was told, too. I think we are in the middle of week 5 now. I'll shoot them an e-mail tomorrow.

    About camshaft -
    I think I'll give it a try to put SR43A camshaft in SR42B. I am quite sure there will be no mechanical conflict.
    Like Wundis already pointed - I am curious too how the camshaft will act with different CDI (read: ignition timing) it was not designed to work with. I suppose it shouldn't be a problem, since many aftermarket cams are produced for BIGs and they don't care if it goes into SR41 or SR43, A or B model AFAIK.

    And then there is another possible mod called tunable CD Ignition which allows you to design your own ignition curve in your computer :wink:
    I hope these guys are still in business: http://www.ignitech.cz/english/aindex.htm
    Look for section "SPARKER DC-CDI - capacitive ignition for 1 cyl. motorbikes" on their site.
    I am not too serious about this mod right now but the idea has haunted me since I read SR43 had different ignition curve.
    OK, over and out now. I think I am just overthinking and should get working on the bike finally. Snow is already melting here...
  7. Resi

    Resi Been here awhile

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    Yeah. I've got a couple of regrund camshafts, used in SR41, 42 and 43...
    But, I always check for clearance.

    Cheers,
    Lars
  8. aapo

    aapo aapo

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    With ignitech you can the get rid of ignition power source coil and update stator to similar used on africa twin. In case you need lots of electricity (light, heated grips etc. Could be usefulle at least up here in nort...) But then you also need to have battery in good condition to have spark.

    This is interesting choice for SR41 owners, since SR41 stator is avilable only from suzuki, €€€€:eek1. or then just re coil old one....

    -aapo
  9. wundis

    wundis Adventurer

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    Hey,
    I've spent the last 30 minutes trying to find the cam chain tensioner spring on the updated Hesslers site... No luck.

    Could someone please give me a direct link? :cob
  10. mait

    mait Been here awhile

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    Here you are:
    http://www.dr-big-shop.de/BIG_MotorReparatur_821.html
    I ordered one a couple of months ago



  11. wundis

    wundis Adventurer

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  12. aapo

    aapo aapo

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    Huh, Just editing some 40 G of videos for wedding present for my firend. (yes no piston yet, so have some extra time) hope i'll finis in time...

    But if you have time and want to see some lapland views go to youtube and just type "Uraa" in sreach. (no my staf there yet)

    Sorry, not so many DRs there anymore these days... but still some fun videos. Especially if not very dry summer :evil

    http://www.youtube.com/watch?v=6Hy--REj8AA


    http://www.youtube.com/watch?v=l3VekS0TEEc


    -aapo
  13. mait

    mait Been here awhile

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    Very beautiful playground there, Aapo. Should come to visit the place some time.

    PM sent, too.
  14. robmoto

    robmoto Long timer

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    Great vids Aapo and good rideing
  15. motolab

    motolab Long timer

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    Which brand(s) of aftermarket stem seals have you tried?

    Regards,

    Derek
  16. motolab

    motolab Long timer

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    Which brand(s) of aftermarket stem seals have you tried?

    Regards,

    Derek
  17. motolab

    motolab Long timer

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  18. Ladder106

    Ladder106 It's a short cut, really

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    So is the DR750 coil both the POWER and the TRIGGER for the ignition system.

    I don't understand how you eliminate one coil without losing the trigger also.

    Derek, I have GOT to make time to come see your shop. It's funny, you kinda sit there in the background while I think that everything I need has to come from europe and then you just wave and say "I can do that":lol3
  19. motolab

    motolab Long timer

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    The trigger is separate from the coil that normally powers the CDI.

    Regards,

    Derek
  20. Ladder106

    Ladder106 It's a short cut, really

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    OH....OK so the CDI power coil will look the same as all the other coils on the stator.

    The ignition trigger is obviously different. I thought the ign. trigger did both functions.