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1959 Pan carburetor settings

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giorgio
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1959 Pan carburetor settings

#1

Post by giorgio » Tue Apr 26, 2005 9:12 pm

i finally installed a stock cv carb.on my pan. but i still have problems with gettings.
please help.
giorgio



caschnd1
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Re: 1959 Pan carburetor settings

#2

Post by caschnd1 » Tue Apr 26, 2005 9:18 pm

Giorgio,

I run a rejetted CV carb from a '96 Evo on my panhead. Works really well. If you got your CV from an Evo or TC88 you'll need to rejet it. Probably too rich as those motors have more displacement. My carb is setup as follows:

Slow Jet: #48
Main Jet: #175
Needle Jet: 0.115
Needle Type: N86E
Idle Mix Location: 3 turns

Engine Specs:
Displacement: 74c.i. +0.060
Cam: Crane 296A
Compression: 8.5:1
Exhaust: Free Flowing (upsweeps with 22" baffles)

Also, see the "Carb Poll" thread (page 4) for more info on CV carbs.

-Craig

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Re: 1959 Pan carburetor settings

#3

Post by fourthgear » Wed Apr 27, 2005 1:47 pm

Caschnd1
Not to change the subject, How do you like the Crane cam , I just bought one for my 49? I'll Be using a M74B carb. Just curious.

Mike

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Re: 1959 Pan carburetor settings

#4

Post by caschnd1 » Wed Apr 27, 2005 4:18 pm

Mike,

The 296A was recommended to me by the guy who did my engine work. I told him I was looking for easy starting, reliablity, and decent power. Based on that he recommended this cam. Now he might have been a little biased since he worked for Harvey Crane back in the 60's. But I've been real happy with the results. The setup meets all my expectations.

-Craig

King
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Re: 1959 Pan carburetor settings

#5

Post by King » Fri Apr 29, 2005 12:42 pm

Craig

Were any modifications needed to install the 296A?

King

caschnd1
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Re: 1959 Pan carburetor settings

#6

Post by caschnd1 » Fri Apr 29, 2005 3:41 pm

King,

Yes, the cam gear has to be modified if you are using it in a flat side (generator) bottom end. You can use it in cone motor Shovels without mods. See the instructions at: http://www.cranecams.com/pdf/327e.pdf" onclick="window.open(this.href);return false; Go directly to page 4 for details on the cam gear modification.

My cam was installed as part of a complete engine rebuild. So improved valve springs were installed and all the clearances were checked during the build to make sure valves weren't too close to pistons.

-Craig

kell
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Re: 1959 Pan carburetor settings

#7

Post by kell » Fri Apr 29, 2005 3:54 pm

What's the lift on that cam?

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Re: 1959 Pan carburetor settings

#8

Post by caschnd1 » Fri Apr 29, 2005 4:06 pm

Here are the specs:

Open Close Duration Lift
intake 22° 44° 244° .455**
exhaust 44° 22° 244° .455**

**lift for Shovelhead, add 5% for panhead

Corrected lift for panheads is .478

-Craig

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Re: 1959 Pan carburetor settings

#9

Post by fourthgear » Fri Apr 29, 2005 5:58 pm

You will also need to change to the needle type ( Torrington)bearing in the right case if you are running a bushing type cam bearing. I found out the hard way ,but the needle type should be better .

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Re: 1959 Pan carburetor settings

#10

Post by Cotten » Sat Apr 30, 2005 2:08 pm

It is cheaper and safer to custom cut a bushing.

Needle bearings are one more thing that keeps later bikes from running forever like earlier machines did.

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