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Join Date: Apr 2015
Posts: 4
need help with 3.0 sc motor with weber carbs

Hi, can anyone tell me what the HC & CO on this motor with this set up?
My set up
34mm main venturis
145 main jets
F3 emulsion tubes
180 main air correction jets
60 idle jets
Carbs were done by Paul (Performance Oriented)
Thank You in Advance
Can you please email me victor@morgadosinc.com

Old 05-13-2020, 07:02 AM
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Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
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Really good question. Why do you ask?

You may want to install an AFR meter.

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Gordon
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'71 911 Coupe 3,0L outlawed
#56 PCA Redwood Region, GGR, NASA, Speed SF
Trackrash's Garage :: My Garage
Old 05-13-2020, 01:17 PM
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Gordon, Thank You. That is the best way to go. Didn't think of it. I have a lot of time and money in my car and need to know where its running
Old 05-14-2020, 02:58 AM
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What size carbs?
Old 05-14-2020, 05:27 AM
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An AFR gauge is good for monitoring mixtures assuming idle adjustments (Lean Best mixture and air flow balancing) and on-throttle balancing of air flows have been adjusted. If air flows are not balanced then AFR readings will be an average of both carbs. This does assume one AFR gauge is used in one of the exhaust collectors. Also, float levels in all four float bowls must be checked for correct setting since fuel levels in float bowls determining when fuel begins flowing in the main circuit and will affect mixture readings.

In conclusion: AFR gauges are very useful in checking your jetting for new carb setups but basic tuning must be performed correctly to baseline the readings.

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www.PerformanceOriented.com
Old 05-14-2020, 09:09 AM
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