CV or Mikuni
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Joined: Aug 2007
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From: Boise, Idaho
CV or Mikuni
I have an electra glide TC88 with a big sucker, dresser duals and Vance&Hines slash cuts. I'm running a Mikuni 42 carb. I live in Boise, Idaho which is at about 2800 feet. Sometimes I head for the mountains and go as high as 7000 feet or maybe for Hells Canyon and an altitude of about 1000.
Would the CV carb actually be a better choice since I understand it adjusts for altitude?
Suggestions most welcome.
Thanks
Would the CV carb actually be a better choice since I understand it adjusts for altitude?
Suggestions most welcome.
Thanks
Road Warrior
Joined: Mar 2007
Posts: 1,396
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From:
I have an electra glide TC88 with a big sucker, dresser duals and Vance&Hines slash cuts. I'm running a Mikuni 42 carb. I live in Boise, Idaho which is at about 2800 feet. Sometimes I head for the mountains and go as high as 7000 feet or maybe for Hells Canyon and an altitude of about 1000.
Would the CV carb actually be a better choice since I understand it adjusts for altitude?
Suggestions most welcome.
Thanks
Would the CV carb actually be a better choice since I understand it adjusts for altitude?
Suggestions most welcome.
Thanks
Outstanding HDF Member
Joined: Aug 2006
Posts: 2,197
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From: Meridian, Idaho
My son had a HSR 42 on his Road King when he lived in Boise, rode it all over the state, California at sea level and all over Colorado and Arizona when he lived there. Woked great everywhere. He replaced the CV with the Mikuni after our Sturgis trip in '99 when the CV ran like crap. The Mikuni works better for both stock and built motors has better throttle response and makes more torque than a CV on the dyno.
Tourer
Joined: Jan 2008
Posts: 278
Likes: 5
From: Glenmora,La
Spring is coming! I personally like the CV,have done alot of work on mine,and they run good when you get your jetting right.If you have a plug in your CV where you adjust the air/fuel mixture,it's been worth it (in my case) to remove and replace the air/fuel mixture screw,with a adjustable thumb screw.It help's to get it just where you want it,and they all adjust to a different point,depending on what jetting and all that's in it,but that being said they are both great carb's,much much better the Harley Used to use on shovel's
Grand HDF Member
Joined: Sep 2007
Posts: 4,122
Likes: 43
From: Boise Idaho
I also live in Boise and would have to vote for the CV, the Mikuni sounds racier because it has great throttle responce when you crack the throttle, but they are a pain in the rearend to work on especially in Boise because parts are very difficult to come by and no one here works on them.
I love the CV on my Sportster you can ride it any where and it always runs the same.
I love the CV on my Sportster you can ride it any where and it always runs the same.
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Joined: Aug 2007
Posts: 55
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From: Boise, Idaho
Great Discussion
Thanks for the ideas. I modified my Mikuni using the Joe Minton (American Rider Mag.) and went with a larger squirter and squirter adjustment, larger diameter needle, and much smaller pilot. In fact, I'm now running a 15 pilot which is even smaller than Joe's recommended 17.5. I got the 15 when I ordered the carb parts from the Chicago supplier. Without going to the 15 there was nothing I could do to adjust air/fuel at all. There was no rpm difference no matter what I did with the adjustment screw. The bike seems to run REALLY well now but I've only had her out a couple of times since I put on the dresser duals. It's too dang cold!!
Before I did the Minton mods I was getting about 35 mpg highway, now I get about 42. Much better... and better range for the road too!
Last summer I rode to the top of Bogus Basin Road (7,000 ft) and the bike choked to death on the rich mixture. I had to coast down the hill a bit on the way home before she would start.
I think I'll stick with the Mikuni for now... but if I keep having problems I may need to see if I can trade someone.
Before I did the Minton mods I was getting about 35 mpg highway, now I get about 42. Much better... and better range for the road too!
Last summer I rode to the top of Bogus Basin Road (7,000 ft) and the bike choked to death on the rich mixture. I had to coast down the hill a bit on the way home before she would start.
I think I'll stick with the Mikuni for now... but if I keep having problems I may need to see if I can trade someone.
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