Subject	Google says ...
Posted by	NytWolf on November 21, 2007 at 3:22 PM
	This message has been viewed 88 times.
In Reply To	where does the 11:1 A/F ratio rule of thumb come from? posted by ZEngineer on November 21, 2007 at 01:56 PM
Message	actually, I say to gain more knowledge, read this link. It talks about stochiometry and the fact that not all the air put into the combustion process is used up. That's the long answer. The short answer is: that these "safe" ratios are considered safe because they have been tried with many thousands of vehicles over many years.
Follow Ups	where does the 11:1 A/F ratio rule of thumb come from? - ZEngineer 13:56:49 11/21/07 I don't know the answer to this - awesom-o 14:06:00 11/21/07 It is a built-in safety margin. If you're using a tailpipe - Guapo 14:11:40 11/21/07 understood, thanks. Just a little FYI - ZEngineer 14:18:12 11/21/07 Follow up question - - awesom-o 14:21:19 11/21/07 Guapo's message sums it up nicely - ZEngineer 14:30:38 11/21/07 Odd that you'd have to correct so much. BTW, usually - Guapo 14:34:40 11/21/07 a possible explanation might be - ZEngineer 14:40:05 11/21/07 Hey George, what dual pop intake do you have? - Ash's Z 16:00:31 11/21/07 That's impossible. Our intake doesn't have an imbalance. - ni[X]it 16:58:54 11/21/07 :) (n/m) - Ash's Z 21:43:29 11/21/07 I'm using the JWT replica elbows that used to be available - ZEngineer 17:03:23 11/21/07 I put together a post which made it to FAQ called "The - Ash's Z 21:45:19 11/21/07 duly noted, I'll have to find some sort of hand-held pump - ZEngineer 21:48:29 11/21/07 the accuracy is still bad... - ni[X]it 16:42:45 11/21/07 all the more reason to get a wideband in soon :) (n/m) - ZEngineer 17:04:21 11/21/07 contact me for all the Innovate stuff (n/m) - Seb (specialty-Z) 20:58:16 11/21/07 will do, but I have a little more homework to do - ZEngineer 21:17:58 11/21/07 give us a call for any technical questions - Seb (specialty-Z) 01:13:44 11/22/07 When converting from metric to US units that is 11.5:1.... - RSR 14:21:32 11/21/07 Mostly to do with combustion temperatures. If you try - Ash's Z 15:14:40 11/21/07 Exactly, it's primarily for cooling. - ZCulture 10:09:20 11/22/07 Google says ... - NytWolf 15:22:32 11/21/07 11.5 is safe, nothing over 12 if you run big turbo/boost - timz 15:23:03 11/21/07 "I've never heard her ping" - AZHeat 15:53:31 11/21/07 where are you getting 11.6 from? (n/m) - Devi13 20:38:40 11/21/07 wideband reading (n/m) - AZHeat 00:23:45 11/22/07 yeah on what octane? - Seb (specialty-Z) 20:59:15 11/21/07 Re: yeah on what octane? - AZHeat 00:23:20 11/22/07 Re: Re: yeah on what octane? - Seb (specialty-Z) 01:12:47 11/22/07 I'm running 19psi on sport 500 with 91 octane for over 1yr. - Devi13 02:52:21 11/22/07 I know what pinging sounds like. I have heard pinging - AZHeat 09:19:28 11/22/07 .. - jas0n3485 10:03:09 11/22/07 check primary timing map - Devi13 13:46:48 11/22/07 sounds like you've got your timing maps - Seb (specialty-Z) 16:33:21 11/22/07 Re: I'm running 19psi on sport 500 with 91 octane for over 1 - Seb (specialty-Z) 16:32:28 11/22/07 Actually its very advanced. - Devi13 03:07:52 11/23/07 Re: Actually its very advanced. - Seb (specialty-Z) 13:48:17 11/23/07 intercooler setup - Devi13 14:22:24 11/23/07
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