RE: [Chevelle-List] dumb question about carbs

[Dale McIntosh]

Title: Message

The page with the info is http://www.edelbrock.com/automotive/eps_sect2.html#idle.html#idle, the index.html is a base page.  I stand corrected (jump in here anytime Brian LOL).  I always adjusted the IMS until max RPM was obtained with the highest vacuum reading.  I just assumed that turning the screws in reduces the air flow in the idle circuit; apparently it reduces the fuel flow in the idle circuit.  Makes sense that less fuel will create a leaner condition.   BTW, the Holley site (http://www.holley.com/HiOctn/TechServ/TechInfo/TI-219.html) says the same thing: "Most Holley Street Performance, O.E. Muscle Car, Competition and Pro-Series HP carburetors utilize idle mixture screws, located on the sides of the primary metering block. These control the volume of the pre-mixed air/fuel coming through the idle well. Turning the screws clockwise will "lean" the idle system.  Conversely, turning the screws counterclockwise will "richen" the idle system."   Jim - get a fuel injection system <G>  That only takes a computer to tune.  But now you're talking pulse width, voltages, etc....eh, better stick with a screwdriver.  LOL! Dale McIntosh TC Gold #92/ACES #1709 67SS/67 Elky Dale’s Place – My 67 SS and 67 El Camino ChevelleStuff – Decoding info on 64-72 Chevelles Team 67 – 1967 Chevelle/El Camino Specific Midwest Chevelles – Midwest Chevelle Show Information -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Fruhauf Kerry A SSgt 3CS/SCBS Sent: Wednesday, May 28, 2003 4:36 PM To: [EMAIL PROTECTED] Subject: RE: [Chevelle-List] dumb question about carbs IDLE MIXTURE   The Edelbrock Performer Series carburetor has conventional Idle Mixture Screws (IMS) that provide a leaner A/F when turned clockwise and richer A/F when turned counter clockwise. The idle air flow is controlled by a conventional screw that opens the Primary Throttles. The following procedure should be used to set the idle mixture and speeds.   Taken from Edelbrocks web page.   http://www.edelbrock.com/automotive/index.html   Kerry A. Fruhauf, SSgt, USAF Unit Security Manager 3 CS/SCBS 552-9751     -----Original Message----- From: John Nasta [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 28, 2003 1:53 PM To: [EMAIL PROTECTED] Subject: RE: [Chevelle-List] dumb question about carbs   I don't think so. When you turn counter-clockwise, you create more space inside, letting more gas flow. When you turn clockwise, you close the gap, letting less gas through. No?   John Nasta       -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Brian Zack Sent: Wednesday, May 28, 2003 5:40 PM To: [EMAIL PROTECTED] Subject: RE: [Chevelle-List] dumb question about carbs   Counterclockwise.   Brian Zack '70 Chevelle Malibu mailto:[EMAIL PROTECTED]   -----Original Message----- From: J. Brady [mailto:[EMAIL PROTECTED] Sent: Wednesday, May 28, 2003 3:05 PM To: [EMAIL PROTECTED] Subject: [Chevelle-List] dumb question about carbs     I should know this by now, but I don't   8^[   To make the air fuel mixture more lean on my Edelbrock performer 600, do I turn the screws clockwise or counter-clockwise?  My guess is the latter, but I wanted to double-check.   Thanks,   Jim '66 Malibu     __________________________________ Do you Yahoo!? Yahoo! Calendar - Free online calendar with sync to Outlook(TM). http://calendar.yahoo.com   ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]   ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]     ----------------------------------------------------- To Unsubscribe please visit www.chevelles.net/list.html To start a new topic, send mail to: [EMAIL PROTECTED]