« previous next »
Pages: [1]   Go Down

Author Topic: CR400 Mikuni Jetting  (Read 5482 times)

0 Members and 1 Guest are viewing this topic.

Offline Duane799

  • C-Grade
  • **
  • Posts: 75
    • View Profile
CR400 Mikuni Jetting
« on: August 25, 2011, 10:11:57 am »
Does anyone have jetting specs for a 36mm Mikuni for a 1970 CR400? The jetting was ok before I pulled it down but i can't read the numbers on the main or needle jets. Would like to get new jets in the correct range.
Thanks
Duane
Logged

Offline HuskyPete

  • A-Grade
  • ****
  • Posts: 492
  • Huskys Only, maybe a CCM
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #1 on: August 25, 2011, 10:35:49 am »
Vintage Husky Jetting for Bing
Main Jet- 160
Pilot Jet- 45
Needle Jet- 2.85
Number 1 slide
Needle 281 bottom clip

38mm Mikuni
3.5 slide
300 Main jet
50 pilot jet
Q2 needle jet
6 dp1 Needle
« Last Edit: August 25, 2011, 10:38:14 am by 67Husky »
Logged
1967 360 Viking, 1969 360 Cross, 1974 250 Mag x 3, 1974 400 Cross x 1, 1974 450 WR, 1975 250GP, 1976 250 WR, 1978 390 Auto, 1982.5 500 Gold Bullet. 1976 390 OR, 78 CCM

Offline Duane799

  • C-Grade
  • **
  • Posts: 75
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #2 on: August 25, 2011, 03:38:57 pm »
Will the 38mm Mikuni jetting specs close to the 36mm Mikuni jetting specs?
Logged

Offline oldyzman

  • Legend
  • *****
  • Posts: 2187
  • 250 two stroke!
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #3 on: August 25, 2011, 05:30:35 pm »
Logic would be that the 36 would require leaner jetting than the 38, if you started at the 38 spec provided then it would be a safe starting point. I was advised this by a motorcycle mechanic when messing around with a 32 and 34 mm mikuni on a RM125. Will be interested if others agree on the principal. Maybe just consider using a 38 anyway...
Brett
Logged
I have a soft spot japanese mxers with aluminium tanks. Two stroke classic Dirt Track...

Offline GD66

  • Legend
  • *****
  • Posts: 1109
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #4 on: August 25, 2011, 06:34:39 pm »
If somebody has a Mikuni 36 on a 400 and can give us the gen, that'd be great as I too have a 36 sitting waiting to be plugged onto my 400... :D
Logged
Nostalgia's not what it used to be....

Offline Duane799

  • C-Grade
  • **
  • Posts: 75
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #5 on: August 26, 2011, 10:48:11 am »
Thanks for the info. Will put up the jetting specs for the 36mm when its sorted.
Logged

Offline GD66

  • Legend
  • *****
  • Posts: 1109
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #6 on: September 02, 2011, 07:31:16 am »
Hi Duane and others, found this Braigasen Mikuni chart which gives a few clues...

http://www.braigasen.com/Mikuni_jetting_chart_two_stroke.htm

Includes jetting for both 36 and 38mm for Huskies. Bewdy !

Cheers GD  ;)
« Last Edit: September 02, 2011, 07:32:51 am by GD66 »
Logged
Nostalgia's not what it used to be....

Offline Tossa

  • Legend
  • *****
  • Posts: 2087
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #7 on: September 02, 2011, 09:46:07 am »
gee great find Glen very helpful
Logged
1973 Rickman Zundapp Metisse, to rebuild
1979 Husqvarna WR250
1974 Husqvarna MAG CR250

Offline Duane799

  • C-Grade
  • **
  • Posts: 75
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #8 on: September 02, 2011, 08:53:11 pm »
Thank You very much.
My jetting was pretty close.
Thanks
Logged

Offline popeye

  • Legend
  • *****
  • Posts: 975
  • 1-2-3 wheel's l don't care...All good fun.
    • View Profile
Re: CR400 Mikuni Jetting
« Reply #9 on: September 03, 2011, 05:37:49 pm »
Great find alright, every tool box should have one of these glued to the lid, mine has now thank you............
Logged
IN IT FOR THE FUN OF IT. LIKE MR NIKE SAYS JUST DO IT.
Pages: [1]   Go Up
« previous next »