Go Back   DIY Go Kart Forum > Announcements & Suggestions > Introduce Yourself!

Notices

Closed Thread
 
Thread Tools Display Modes
  #1  
Old 06-02-2012, 02:08 PM
johnsonc1 johnsonc1 is offline
Junior Member
 
Join Date: Jun 2012
Location: IOWA
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default 22mm Mikuni Carburetor

I bought this carburetor and put it on a honda clone 6.5hp with a adapter,i also put a flattop piston in and removed the governor. Heres the question it seems that the full choke runs the engine at too high of rpm, so i hold it at half by hand. Is there a way to add a half choke feature ?
  #2  
Old 06-02-2012, 06:03 PM
Doc Sprocket's Avatar
Doc Sprocket Doc Sprocket is offline
*********
 
Join Date: Jun 2009
Location: Ontario, Canada
Posts: 15,677
Thanks: 723
Thanked 2,202 Times in 1,692 Posts
Default

Welcome to the forum.

Does that choke only feature one detent? Many have two. I can't remember- I think it's actually a starter-enricher circuit, instead of a conventional "choke". If it had a conventional choke plate, you could drill a hole in the plate to allow more air in when closed. Obviously, you would drill a very small hole (maybe 1/16", test, and enlarge as necessary. Since I'm pretty sure it's actually a starter-enricher circuit, I think the only thing you could do is reduce the size of the orifice (jet). I do not know if that's a replaceable part. One thing you can try is warm up the engine, and turn the idle down as low as it will go without stalling. That may help when choked.

You might be able to alter the choke lever mechanism to allow it to hold in a partway position.
__________________
Treat it as you would an aircraft frame and you should have no problems. -Name Withheld
The Manual- "Just the manufacturer's opinion of how to put this together."- Tim "The Tool Man" Taylor
Put down the wrench, and come out with your hands up!- Me!
Wrench, Wheel, Wreck, Repeat...
  #3  
Old 06-05-2012, 07:51 PM
johnsonc1 johnsonc1 is offline
Junior Member
 
Join Date: Jun 2012
Location: IOWA
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I bought it from affordablegokarts.com. And i have no idea what ur asking but it has one screw on the side and another on the bottom toward the adapter side, the choke is on/off
  #4  
Old 06-05-2012, 07:56 PM
CrashTestDummy CrashTestDummy is offline
Junior Member
 
Join Date: Jun 2012
Posts: 9
Thanks: 4
Thanked 0 Times in 0 Posts
Default

http://lmgtfy.com/?q=mikuni+vm22+tuning
  #5  
Old 06-21-2012, 12:55 PM
johnsonc1 johnsonc1 is offline
Junior Member
 
Join Date: Jun 2012
Location: IOWA
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default

i have the tuning manual already but it is gibberish and yes ive googled it crashtestdummy it wont idle and only starts on choke
  #6  
Old 06-21-2012, 03:56 PM
Doc Sprocket's Avatar
Doc Sprocket Doc Sprocket is offline
*********
 
Join Date: Jun 2009
Location: Ontario, Canada
Posts: 15,677
Thanks: 723
Thanked 2,202 Times in 1,692 Posts
Default

Gibberish? From Mikuni?
__________________
Treat it as you would an aircraft frame and you should have no problems. -Name Withheld
The Manual- "Just the manufacturer's opinion of how to put this together."- Tim "The Tool Man" Taylor
Put down the wrench, and come out with your hands up!- Me!
Wrench, Wheel, Wreck, Repeat...
  #7  
Old 06-22-2012, 01:04 AM
landuse's Avatar
landuse landuse is offline
Moderator
 
Join Date: Nov 2010
Location: Pietermaritzburg, South Africa
Posts: 17,229
Thanks: 2,058
Thanked 3,408 Times in 2,777 Posts
Default

Is this the manual you have? Doesn't look like gibberish to me

Mikuni carburetor tuning manual
http://www.mikuni.com/pdf/hsr_tuningmanual_021003.pdf
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 06:33 PM.