| Author |
Message |
    
Gearheaderiko
| | Posted on Monday, May 19, 2008 - 01:24 am: | 
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I'm putting a CV carb on a 59 Panhead and also plan on putting a CV on my '77 Shovel.
Does anyone have any idea what a starting place for the jetting might be? Needles? Or any other info/experience. |
Gentleman_jon
| | Posted on Monday, May 19, 2008 - 07:16 am: |
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I am not a carb specialist by any matter of means, but those who are probably would like a bit more info about your motors, such as cubic capacity, compression, cams, air cleaner, exhaust system, etc, if they vary from stock.
Just my .02ยข
PS. I have a Screaming Eagle (Mikuni) 42 that is like new, that I could be talked out of.
(Message edited by gentleman_jon on May 19, 2008) |
Jackbequick
| | Posted on Monday, May 19, 2008 - 09:16 pm: |
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Most of the EVO engines had 185 main jets and #42 slow speed jets on their CV-40's on arrival. I say had because H-D is no longer selling any bikes with carbs.
This is a site that has a lot of useful info on the EVO and Twin Cam engines. They have good sections on working on the CV-40.
http://www.nightrider.com/biketech/
Many of us that had or have Buells or other bikes with the CV-40 went to a #45 slow speed jet and uncapped the idle mixture screw to set the idle mixture. That is a cure for the too lean as delivered condition that goes to meeting emission standards but makes for miserable starting, warm up, and slow speed riding.
The #45 and idle mixture screw is a must have mod as far as I'm concerned, that and some other carb mods are detailed here:
http://www.nightrider.com/biketech/hd_cv_mods.htm
I think you'll find some of that info useful on getting started with those carbs on your bikes. I think the CV-40 has the potential to be a good carb for the earlier engines.
Some of the early H-D carbs were not renowned for being either good or trouble free. Many that explains all the after market carbs that came around over the years.
Jack |
Gearheaderiko
| | Posted on Tuesday, May 20, 2008 - 12:52 pm: |
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Thanks Jack and thats the reason I asked here first because of the willingness of Badweb members to help.
But, I really just need a starting point!
Just trying to save a little tuning time. I know I'm not the first person to do this swap, but the others may not be on Badweb. If a web search doesnt reveal any hints, I'll just start with whats in the carb and go from there.
Thanks for the offer of the Mikuni, but I already have a half dozen CV carbs around and a full selection of jets, unless you were going to donate it?
PS they're both basic 'stock' engines, stock compression with aftermarket exhausts. Nothing real special. |
Gearheaderiko
| | Posted on Wednesday, May 28, 2008 - 11:42 pm: |
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46/175 seems to be the consensus starting point. I'll post after I get it tuned in (which may be some time). |
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