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CV carb starting point

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woody

Posts: 493

Joined: Mon Apr 15, 2002 12:01 am

Location: Wa, USA

Post Thu Apr 18, 2013 1:06 pm

CV carb starting point

I am looking for suggestions on a starting point for jetting in a Kehin CV on a BTFH. 74ci, relieved, aluminum heads, oversize valves, KNS medium reground intake cams, auto advance dual point ignition, 5 speed with belt drive primary, 23-48 rear (3.32 final drive ratio).
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LarryP

Posts: 44

Joined: Thu Jan 05, 2006 7:38 am

Post Fri Apr 19, 2013 2:49 pm

Re: CV carb starting point

I installed an HD 40mm CV with accelerator pump on a stock UL. I used a 180 main, a 48 pilot, and a needle from a Sportster. The original needle could have been raised about 1/16" for the same effect.
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X-WLCH

Posts: 111

Joined: Wed Apr 30, 2008 12:16 pm

Post Sat Apr 20, 2013 8:31 am

Re: CV carb starting point

OK WOODY TELL US ABOUT THAT AUTO ADVANCE DUAL POINT IGNITION.
IF IT'S ANYTHING LIKE THE WOODY PUMP I'M VERY INTERESTED.
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woody

Posts: 493

Joined: Mon Apr 15, 2002 12:01 am

Location: Wa, USA

Post Sat Apr 20, 2013 11:03 am

Re: CV carb starting point

I would post some pictures, but I have never been able to figure out how to do it.
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fhsmith1

Posts: 206

Joined: Wed Jul 26, 2006 6:10 pm

Location: Georgia

Post Sun Apr 21, 2013 10:58 am

Re: CV carb starting point

Woody
To post pics you just have to re-size them to a fairly small size. Last ones I posted were about 50 KBs. You can only post 3 at a time.
F
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woody

Posts: 493

Joined: Mon Apr 15, 2002 12:01 am

Location: Wa, USA

Post Mon Apr 22, 2013 10:32 am

Re: CV carb starting point

Dual point auto advance distributor.

Image

Image
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knucklebolt

Posts: 224

Joined: Tue Feb 12, 2013 8:27 pm

Location: Six miles East of Cheney, Wa.

Post Tue Apr 23, 2013 10:04 am

Re: CV carb starting point

Cool stuff. And I thought I was cool 'cause I picked up a servi-car circut breaker. How much advance does the duel point have?

ken
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woody

Posts: 493

Joined: Mon Apr 15, 2002 12:01 am

Location: Wa, USA

Post Tue Apr 23, 2013 10:39 am

Re: CV carb starting point

It has about 20 degrees advance. It uses shovelhead advance weights on a mirror image rotor to allow for the opposite rotation in a flathead.
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RUBONE

Posts: 381

Joined: Fri Nov 30, 2007 7:24 pm

Post Wed Apr 24, 2013 6:45 am

Re: CV carb starting point

It has about 20 degrees advance. It uses shovelhead advance weights on a mirror image rotor to allow for the opposite rotation in a flathead.

Flathead and OHV Big twin timers spin the same direction. What do you mean by opposite roration?
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X-WLCH

Posts: 111

Joined: Wed Apr 30, 2008 12:16 pm

Post Wed Apr 24, 2013 8:21 am

Re: CV carb starting point

NOSE CONE SHOVELHEADS STUFF HAS OPPOSITE ROTATION.
WHERE DID YOU GET THOSE POINTS ? LOOKS LIKE THEY HAVE SCREW ADJUSTERS ?
I KNEW IT WOULD INTEREST ME. THANKS. NICE WORK.
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knucklebolt

Posts: 224

Joined: Tue Feb 12, 2013 8:27 pm

Location: Six miles East of Cheney, Wa.

Post Wed Apr 24, 2013 9:54 am

Re: CV carb starting point

He might have made them. !!!!
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woody

Posts: 493

Joined: Mon Apr 15, 2002 12:01 am

Location: Wa, USA

Post Wed Apr 24, 2013 9:58 am

Re: CV carb starting point

Small block Chevy points.
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jerseymutt

Posts: 4

Joined: Sun Aug 06, 2006 5:14 am

Location: Exit 91, Brick, NJ

Post Tue Jul 02, 2013 1:21 pm

Re: CV carb starting point

There was an article/post on this back in 2005 and I printed it out. It had a lot of good info on this. The writer recommends 185 and 48 to start with. I tried to do a search to find it and post a link but it seems to be gone. He also says get a needle from a from an early sportster #27094-88, use emulsion tube 27101-88 and get every intermediate jet from 48 to 52 and mains from 185 to 205. I hope this helps, I thought it was really great info. The authors name was Jim and it was dated 8/21/2005. If your interested your search may be more fruitful then mine.

Also if you want I could fax it but the print is small and light.

Mutt

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