Mikuni Carb Secondary butterfly mechanical actuation - help!

MightyBoy tech questions and answers.
Crank
Posts: 67
Joined: Sun Oct 16, 2005 4:27 pm

Does anyone have any picture of the setup with which to activate the secondary butterfly of the carb?

Or cud you explain how to do it?

Cheers.
bswift16
Posts: 131
Joined: Mon Sep 26, 2005 3:34 am

hey there
the secondary is vacum activated, the diaphram is on the left hand side of the carby
willing to prove red ones go faster
Crank
Posts: 67
Joined: Sun Oct 16, 2005 4:27 pm

Sorry i didn't make it clear enough the first time.

I wanted the secondar to be actauated along with the primary, not with vaccum. I was lookin for a link plate to do that. Anyone have any ideas or pics to help?
bswift16
Posts: 131
Joined: Mon Sep 26, 2005 3:34 am

oh ok :oops: yes it has been done. but i dont know if there are any picks.
willing to prove red ones go faster
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gremlin
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Location: brisbane

the search button is a wonderful thing... :D

http://klass.tamon.org/viewtopic.php?t= ... dary+carby
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Josh
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It is indeed. :D
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Crank
Posts: 67
Joined: Sun Oct 16, 2005 4:27 pm

Thanks very much guys. It helps.

Another query guys. Have anyone of you removed he choke plate and the rod which sits above the primary? I'm asking this coz the rod and the plate seem to block a bit of the opening and wouldn't it produce some good results if it is to be removed?
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Brayden
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There would be no difference without the choke plate, only that you wouldn't be able to start it on cold mornings.
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edmund
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Crank, did you manage to link the two?
hatchman
Posts: 235
Joined: Mon Apr 19, 2004 7:42 pm

a link has been created... many different times.

its very hard to get it right... and drives ya crazy til u get the perfect combo when it opens up etc...
Crank
Posts: 67
Joined: Sun Oct 16, 2005 4:27 pm

Yes, i did link the two throttle butterflies. Both open to the max, the secondary will open when the first has opened for about 50%, but there's a flat spot if i suddenly press the throttle in any gear and if the revs are not right in that gear. The acceleration has been improved a lot. Top end not much difference.

I removed the choke rod & the butterfly, i can now use the choke lever as a cruise control haha... :D pull the lever it has the same effect as being given steady throttle.
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hatch4play
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Joined: Fri Mar 03, 2006 3:44 pm

that choke cruise control sounds dangerous to me! You need cruise control to turn off when you tap the brakes.
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stevan_istheman
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Nah, the hand throttle is more dangeroud in my landcruiser... :roll:
When you twist it, it pulls the throttle open and gives the cruise control kinda thing. Only problem is some idiot hits the brakes infront of you for no apparent reason, then you gotta quickly unwind the thing back.
(bloody volvo drivers) :P
Compared to my hand throttle, the choke is a better option of "cheap cruise control" :keke:
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jono
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Crank wrote:Sorry i didn't make it clear enough the first time.

I wanted the secondar to be actauated along with the primary, not with vaccum. I was lookin for a link plate to do that. Anyone have any ideas or pics to help?
put a weber on :D :D
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hatch4play
Posts: 234
Joined: Fri Mar 03, 2006 3:44 pm

yeah but say what if a little kid runs out in front of you you would not have time to wind or push the lever back in also your first instinct is to go for the brakes and try explaining your home made cruise control the the crash investigation team, you are likely to end up with a manslaughter case on your hands. just my 2 cents. i have had many near misses(not kids) in my 8 years of driving although i spose all you gota do is go for the clutch and brakes.
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