Author Topic: Bullet 1997 carburator VM28  (Read 1859 times)

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Andrej

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on: January 10, 2015, 11:28:14 pm
Hi
I am  new  on forum.
I  bought     Indian Enfield Bullet 1997.  500cc  4 gear.
Bike have  Micar carburator VM 28  main jet 170  and pilot jet 25.
The carb didnt work good  liking all the time   so I bought  Mikuni VM 28.
The carb have  main jet  150   and pilot jet  35.

Please help  wih a sep  up carburator.
I have  jets 125   140   142.5  145   147.5   150   160    165    ....


Thank you 
Regards Andrej


AVL Power!

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Reply #1 on: January 15, 2015, 09:23:37 pm
I think 150 is too big for a 28mm carb. I think you should start from 110 to 115 size jets first. If yours is Hex Main jets then it makes sense but round jets of 150 is way too rich for a 28mm VM carb.(I think)

-Sanket


Andrej

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Reply #2 on: January 17, 2015, 04:47:16 pm
Hi
<yes   my   jet  are  hex  and if  I  understand   the  hex  jets  are  diferent.
So it is  number  140    good  ?     And  I have   a question    . When  is  bike   cold   I  always strart  without  cold start.  I have   some  oter   bikes  one  cylinder 650 cc   and  I  need   cold start.

regards Andrej


ace.cafe

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Reply #3 on: January 17, 2015, 04:57:39 pm
Hi
<yes   my   jet  are  hex  and if  I  understand   the  hex  jets  are  diferent.
So it is  number  140    good  ?     And  I have   a question    . When  is  bike   cold   I  always strart  without  cold start.  I have   some  oter   bikes  one  cylinder 650 cc   and  I  need   cold start.

regards Andrej
If it starts easily without the cold start control, then it is too rich. Try a smaller pilot jet, or adjust your bleed screw.
I would recommend a 27.5 pilot.  If you have 4/042 series hex main jet, try a 180.
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Andrej

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Reply #4 on: January 27, 2015, 06:15:18 am
Hi     
I do  some  changes  and  the  best  solution  was   in  winter time   140 main jet  ,pilot jet 35.  But   never  used cold start  so   now   I will tray   27,5  and  I  tray   some  other   jet main. I  write  the solution.

regard  Andrej