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Author Topic: CR400 Mikuni Jetting  (Read 5474 times)

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Offline Duane799

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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
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Offline HuskyPete

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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 »
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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

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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?
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Offline oldyzman

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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
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Offline GD66

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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
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Offline Duane799

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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.
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Offline GD66

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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 »
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Offline Tossa

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Re: CR400 Mikuni Jetting
« Reply #7 on: September 02, 2011, 09:46:07 am »
gee great find Glen very helpful
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Offline Duane799

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Re: CR400 Mikuni Jetting
« Reply #8 on: September 02, 2011, 08:53:11 pm »
Thank You very much.
My jetting was pretty close.
Thanks
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Offline popeye

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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............
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