 DRLAs Question, Rich idle mixture? |
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| sdoolin |
 Jul 2 2023, 10:41 AM
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Member  Group: Members Posts: 418 Joined: 1-May 14 From: LouKY Member No.: 17,299 Region Association: None  |
2056, dual Dellortos, has been running well for a few years, except in hot humid weather. When it gets hot out, she is hard to start once warm, gotta open throttles all the way. Leaving from a red light also difficult, gotta "clear" the carbs out by opening throttle. Runs fine in high RPM (throttles open(ish)).
Current set-up: Idle Jet = 55 Main Jet = 150 Emulsion Tube = 64 Air Correction (jet stack holder) = 180 Venturis = I forget, but she runs well in mild temps. I am thinking idle jets can go down a size to 50, or maybe 45? Pic because pics help everything (and don't bash my hex bar linkage, I quite like it)...  |
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| GregAmy |
Jul 2 2023, 10:50 AM
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#2
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Advanced Member Group: Members Posts: 2,651 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States 
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You just never really know until you're running wideband...
I tend to run the 2056cc race car really lean on idle, as I want to avoid loading the plugs. Like, 14+ AFR if not higher. And it seems I'm always changing jets based on weather conditions. The street car is running Microsquirt...I am soooo tempted to do that on the race car. |
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Posts in this topic
sdoolin DRLAs Question Jul 2 2023, 10:41 AM
r_towle First, get rid of that hex bar linkage.. :)
Sound... Jul 3 2023, 07:54 AM yeahmag From my experience:
1) You can't tune well wi... Jul 3 2023, 10:53 AM GregAmy ...and do you have a copy of the Dellorto bible...... Jul 3 2023, 01:00 PM sdoolin Yep, I have a copy (actually two of them) of the D... Jul 4 2023, 08:00 AM 914Toy Agree with the comments above.
On hot start diffi... Jul 4 2023, 08:15 AM MarkV 2056 With Delortos & Hex Bar
Vents - 34
Idle... Jul 5 2023, 12:01 AM rhodyguy What are you using for gaskets under the intakes? Jul 5 2023, 10:41 AM sdoolin My venturis are 34 mm (Jake Raby suggested).
Intak... Jul 5 2023, 01:12 PM
yeahmag What is the timing at idle? Jul 5 2023, 04:07 PM rfinegan
What is the timing at idle?
shoot for about 1... Jul 5 2023, 04:56 PM |
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