 Downsize a Weber 44 to 40?, carbs |
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| r3dplanet |
 Aug 22 2013, 02:48 PM
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Senior Member  Group: Members Posts: 679 Joined: 3-September 05 From: Portland, Oregon Member No.: 4,741 Region Association: None  |
I'm new to Weber carbs. I have in my possession a pair of Weber 44 carbs, but I need 40s. Here and there I've read that these carbs have the same body but can be switched from one size to another by swapping parts.
If true, which parts? Gotchas? Anyone care to specifically conceptualize this for me? Thanks, Marcus |
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| wndsnd |
Aug 23 2013, 03:29 PM
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You wanted a horse, but got a goat. Nobody wants a goat.... Group: Members Posts: 2,861 Joined: 12-February 12 From: North Shore, MA Member No.: 14,124 Region Association: North East States  |
I am going through this now.
I bought brand new 44IDF's from Pierce Manifold for a 2056+ build I am commissioning. In the mean time, I am going to run them on a 1.7. They came with 36mm Venturi's 60 idles and 135 mains Pierce recommends for the 1.7 30mm Venturri's #71507.300 55 idles (74405.055) and 125 mains (73401.125). We shall see how they run! John |
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| ChrisFoley |
Aug 23 2013, 06:06 PM
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I am Tangerine Racing Group: Members Posts: 7,934 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None 
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QUOTE(wndsnd @ Aug 23 2013, 04:29 PM)  I am going through this now. I bought brand new 44IDF's from Pierce Manifold for a 2056+ build I am commissioning. In the mean time, I am going to run them on a 1.7. They came with 36mm Venturi's 60 idles and 135 mains Pierce recommends for the 1.7 30mm Venturri's #71507.300 55 idles (74405.055) and 125 mains (73401.125). We shall see how they run! John try 30 vents 47 idles 110 mains 140 air corr. 55 idles are way too rich for low speed running. |
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Posts in this topic
r3dplanet Downsize a Weber 44 to 40? Aug 22 2013, 02:48 PM
SirAndy I'm new to Weber carbs. I have in my possessio... Aug 22 2013, 03:42 PM
tomeric914
You can choke down 44s by running smaller venturi... Aug 22 2013, 05:38 PM Mblizzard I did this for my 1.8. Went with a 28 vent and a f... Aug 22 2013, 07:41 PM wndsnd
I am going through this now.
I bought brand new... Aug 23 2013, 06:57 PM DBCooper Hey John, is Pierce cool or what? Totally under t... Aug 23 2013, 04:14 PM wndsnd
Hey John, is Pierce cool or what? Totally under ... Aug 23 2013, 06:57 PM CptTripps I had 44s in a 2.0 and it was a bit temperamental ... Aug 23 2013, 06:31 PM |
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