G oog le BadWeB | Login/out | Topics | Search | Custodians | Register | Edit Profile

Buell Forum » Quick Board Archives » Archive through June 22, 2005 » Keihin CV 44 vs Mikuni 42 Flatslide « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Rick_a
Posted on Friday, June 10, 2005 - 11:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I'm rebuilding my motor. This is the last decision I have left to make and I'm having a hard time with it. The heart says Mikuni but the brain says Keihin. Who has experience with 'em both and how do they compare on the dyno?
Top of pagePrevious messageNext messageBottom of page Link to this message

Krassh
Posted on Friday, June 10, 2005 - 12:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a Mikuni 42 on my Electra Glide and I would never put anything else on a bike with a carburetor. Also you can go with a 45 Mikuni as well. I also did the higher compression pistons, stage two heads, roller rockers, lifters and Dyna 2000 Ignition but have not had a chance to dyno it yet.
Top of pagePrevious messageNext messageBottom of page Link to this message

Oz666
Posted on Friday, June 10, 2005 - 01:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You are trading throttle response (and maybe a wee bit of horsepower) for much less tolerance of changing conditions. The Mikuni A/F ratio is fixed. The Keihan, at least through the midrange, will adapt to the air density available and keep the A/F closer to what you would like. At WOT both are still a direct function of throat/main jet.
Soooooo, where do you want to ride?




Oz

^^^^^^^^^^^^^ just went from sea level to > 6200' w/NO problems.... (sort-of-stock Keihan)
Top of pagePrevious messageNext messageBottom of page Link to this message

Rick_a
Posted on Friday, June 10, 2005 - 03:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

On the other hand the Mikuni is more tuneable and the jets are easier to access.

CV's are fairly responsive...if you're ham-fisted with the throttle.
Top of pagePrevious messageNext messageBottom of page Link to this message

Rick_a
Posted on Wednesday, June 15, 2005 - 09:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've been looking at the newer Edelbrock carbs. Hard to find any real info on 'em. They have a lot of features I like and I'm pretty much sold on the concept. It's like an updated Lectron. Buell used them on some California S2's so they can't be all bad.
Top of pagePrevious messageNext messageBottom of page Link to this message

Kenb
Posted on Wednesday, June 15, 2005 - 10:46 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

price was my decision on the hsr42. wanted to go edelbrock or s&s but 200$ nib on ebay couldn't be beat. response on the hsr42 is night and day compared to the keihin cv40
Top of pagePrevious messageNext messageBottom of page Link to this message

Kevyn
Posted on Wednesday, June 15, 2005 - 11:37 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Would I put a Keihn back on my S2 after using the Mikuni...no.

I didn't dyno for HP/torque, just the A/F ratio and it was right on target in low-mid 13's. For around town, highway droning and running around in the hills it is perfect.
Top of pagePrevious messageNext messageBottom of page Link to this message

Rick_a
Posted on Thursday, June 16, 2005 - 09:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I like that the Mikuni has a roller bearing slide. The Edelbrock slide slides on a hard anodized surface only. I've heard that these types of carbs have a real heavy pull to pop 'em back open after rolling the throttle closed at high rpm.
Top of pagePrevious messageNext messageBottom of page Link to this message

Rick_a
Posted on Saturday, June 18, 2005 - 08:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for the input. I've the Mikuni on order.
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a private posting area. Only registered users and custodians may post messages here.
Password:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration