 Anyone know how to set float levels on dual 40 IDF weber carbs? |
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| LCOX |
 Oct 10 2014, 05:58 PM
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#1
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Member  Group: Members Posts: 93 Joined: 19-December 09 From: Pinnacle Member No.: 11,148 Region Association: None  |
've got a set of dual webers IDF 40 carbs.
Anyone know how to properly set the float level height on these things. I've got a set of vernier calipers. I'm sure you probably carefully bend one or both of the metal tabs on each float assembly. What is the proper closed figure and the fully open figure. Thanx all L. |
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| arkitect |
Oct 11 2014, 06:25 AM
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#2
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Senior Member Group: Members Posts: 617 Joined: 3-March 10 From: Stockton, CA Member No.: 11,426 Region Association: None |
Did a search and the info I found was 10mm closed and 30mm open.
Dave |
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| r_towle |
Oct 11 2014, 08:29 AM
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#3
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Custom Member Group: Members Posts: 24,574 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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10mm from the gasket with the body held vertical is how I do it.....seems to work for me. 12 mm without the gasket.
Bend the little tab to adjust it. Be accurate and patient...takes a few attempts |
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| Mblizzard |
Oct 11 2014, 09:16 AM
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#4
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
A little tip I got from someone. Use a 10 mm bolt to measure. Check the size with a caliper and then use the head of the bolt against the gasket to set the level. Very quick and easy to use and you can be sure of when the valve is closed.
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| pilothyer |
Oct 11 2014, 09:33 AM
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#5
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Member Group: Members Posts: 838 Joined: 21-May 08 From: N. Alabama Member No.: 9,080 Region Association: South East States |
If this helps any.......Also when you measure the closed position, make sure the valve is closed but don't compress the spring,
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| stugray |
Oct 11 2014, 10:45 AM
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#6
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Advanced Member Group: Members Posts: 3,824 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Diagram in post above is from here:
http://www.redlineweber.com/html/Tech/40-4...s_breakdown.htm Logs of good info on that site. Poke around in the higher level links. And there is some confusion about setting the float level with or without the gasket. I set mine without, then read it should have been with the gasket. It currently runs fine, and will do it right next time I pull the tops. |
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| McMark |
Oct 11 2014, 12:37 PM
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#7
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
QUOTE(pilothyer @ Oct 11 2014, 08:33 AM)  If this helps any.......Also when you measure the closed position, make sure the valve is closed but don't compress the spring, (IMG:style_emoticons/default/agree.gif) So important. QUOTE(stugray @ Oct 11 2014, 09:45 AM) And there is some confusion about setting the float level with or without the gasket. I set mine without, then read it should have been with the gasket. It currently runs fine, and will do it right next time I pull the tops. Measure with the gasket. Set your float too high and the fuel will overflow into the carb throat. Set it too low and will lean out your WOT running. |
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