1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Triple question

Discussion in 'Triumph (Classic)' started by Esmerela, Jan 5, 2019.

  1. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017
    Hi

    Returning to triple ownership after a forty two year layoff, I have recently purchased a 160 from a guy in Virginia . The bike is claimed to have a 1,000cc Big D of Dallas motor, fitted with megacycle cams, la di da , who knows only time will tell. I won't get the bike back to the UK until late Feb early March.

    From the ebay photos I can see it's has a 3 into 1 and Lectron carbs hanging from the inlet stubs. I don't think these will be staying, looking at alternatives to Amals, not that I have anything against Amals, I have premiers on my Mk3 Commando and they do their job well. However with no gantry and the std airbox missing I am going to take the Mikuni challenge either a set from a Hinckley triple or option 2 I have a set of flat slide smooth bore 36mm carbs that came with my Z1100R . Would someone be able to tell me the distance between the inlet port centres on a T160 , I would like to see if it's practical to reduce my smooth bores to a triple pack .

    Best regards

    Esme
     
  2. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004

    Approximately 89-90mm (or roughly 3 1/2").
     
  3. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Hi Esme,

    If you’re getting back into triple ownership, you might wanna frequent this site: http://www.triplesonline.com/

    I had great success with Keihin CR round slide carbs on a 988cc triple.

    But many do graft carbs from modern bikes onto them, which is of course, a far more economical route, and I reckon the good folk over on TOL could assist / share experience with you about this.
     
  4. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017
    LAB,

    That's just what I was looking for, thank you.
     
  5. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017
    Nige

    I will take a look at TOL, thanks for the tip. "a far more economical route" Oh yes, that's the road I'm travelling, for the moment;)
     
  6. trident sam

    trident sam

    Joined:
    Oct 23, 2012
    Kate,
    A set of Mikunis from a Hinckley 900 will go straight on after you've made some manifolds, or 3 carbs off a 4 cyl Daytona with a bit off jet messing. I have jetting info here if you require it. I've got a set on a 990 Neil Beadling motor , the carbs are great , instant start and idle and just goes well. They are expensive to rebuild though.
    The last I heard about the Big D conversion (a few years ago now) was that they were having difficulties finding pistons .
    sam
     
  7. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Just for inspiration...

    DSC04311.JPG DSC04314.JPG
     
  8. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017

    Thanks Sam

    The Hinckley Mikunis sounds like the path of least resistance. I will sell the flat slides and recycle the funds. I will be in touch re jetting when I have purchased the carbs.
     
  9. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017
  10. trident sam

    trident sam

    Joined:
    Oct 23, 2012
    No prob,
    I'm moving house tomorrow so will be off line for about 2 weeks .
    You're bike looks like a good base. You certainley got it at a good price.
    Pretty sure that is a Big D 867 motor without a stroked crank
    sam
     
  11. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    It was a Harrier chassis actually Esme, similar affair, just a better fit for those not built like racing jockies!

    Looks like you have the basis of a nice bike there. As Sam says, I think the 867 kit is probably not a stroked crank. The only possible downside is that some of those kits came with rather hefty pistons.

    I see the bike already has some interesting looking flat slide carbs on it. Perhaps worth seeing how they perform before swapping for something else?
     
  12. trident sam

    trident sam

    Joined:
    Oct 23, 2012
    Lectron carbs, on Nortons no idle facility so presume the same for triples, though as you say could be worth trying first.
    sam
     
  13. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017
    The fitted carbs are Lectron as Sam mentioned they have their limitations, though great for strokers on track not so good for road use.
    Three cables and no gantry all floating around on rubber hoseo_O Think I will pop them on ebay;)
     
  14. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Sounds like a good idea !
     
  15. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017
    Hinckley Mickey Rooney's on route:)

    [​IMG]
     
    Last edited: Jan 10, 2019
  16. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017
    I was able to make some progress over last week end with the inlet stubs for the Hinckley Mikunis. A week or so ago I met up with Reggie and he very kindly lent me one of the inlet stubs from his bike . After running the vernier calipers over it I made a quick sketch prior to making a start on my own.

    [​IMG]

    I have turned up the three Stubs and partially bored them leaving enough to bolt them down on the mill and cut the flanges.
     
  17. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
  18. Reggie

    Reggie

    Joined:
    Jul 24, 2006
    Yes, very nice.
     
    Last edited: Feb 5, 2019
  19. Onder

    Onder

    Joined:
    May 11, 2010
    I had a 3x with the Big D kit bore job only. The pistons are very heavy. Also got in a nice ride on one of his bore and stoke jobs and in 1974 it was
    quite respectable. I put a hole in a piston and nipped up another both middle cylinders. But it was a nice street bike and I wish I had gone for the
    big bore again when I did my current 3x several years ago.
     
  20. Esmerela

    Esmerela VIP MEMBER

    Joined:
    Jan 9, 2017



    Thanks guys

    I finished the machining this evening, hopefully get them cleaned up and dropped off for anodisindg tomorrow.

    [​IMG]
     

Share This Page