Just turbo'd the K, now a few questions.
12-14-2012, 07:49 AM
#26
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
You guys know the difference between AFR on gasoline and E85 right?
Widebands don't read AFR they read in lambda which is the perfect burn ratio of a particular gasoline. In other words the wideband is looking for the perfect burn of one gas molecule to one oxygen molecule content in your exhaust gases. The perfect burn or stoich for gasoline is 14.7 AFR which is were most gauges will read when the wideband reports lambda 1.
However E85 has a stoich of 9.7 AFR which means when your wideband is reading lambda 1 on E85 on the exact same gauge it'll display 14.7. Remember the wideband is reading lambda not AFR.
So on E85 when you're in normal cruise on the highway your AFR is actually 9.7 and when you go WOT it drops below that. What I assume you guys are reading is gasoline calibrated AFR gauges saying you're running 11.5 AFR which would actually be very lean on E85 if that were true.
Widebands don't read AFR they read in lambda which is the perfect burn ratio of a particular gasoline. In other words the wideband is looking for the perfect burn of one gas molecule to one oxygen molecule content in your exhaust gases. The perfect burn or stoich for gasoline is 14.7 AFR which is were most gauges will read when the wideband reports lambda 1.
However E85 has a stoich of 9.7 AFR which means when your wideband is reading lambda 1 on E85 on the exact same gauge it'll display 14.7. Remember the wideband is reading lambda not AFR.
So on E85 when you're in normal cruise on the highway your AFR is actually 9.7 and when you go WOT it drops below that. What I assume you guys are reading is gasoline calibrated AFR gauges saying you're running 11.5 AFR which would actually be very lean on E85 if that were true.
12-14-2012, 07:57 AM
#27
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
OK I get what you're saying. Your terminology is just off because you're not actually running gasoline's AFR. Like I was explained above you're not actually running 11.5 AFR you're just going by a representation because your gauge is calibrated for gasoline. Your actual AFR is more like 7.5. Just clarifying as that can be confusing.
12-14-2012, 01:21 PM
#28
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
thats why you just use lambda instead of 14.7, 12.0 or what ever.
12.5 here on 17 psi on e98/toulenemix
12.5 here on 17 psi on e98/toulenemix
12-14-2012, 01:33 PM
#29
Honda-Tech Member
Re: Just turbo'd the K, now a few questions.
12-15-2012, 03:17 PM
#32
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Re: Just turbo'd the K, now a few questions.
Toluene is hard on the whole fuel system, makes rubber brittle and can dry out the internal seals in injectors
12-15-2012, 03:27 PM
#33
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12-15-2012, 03:38 PM
#34
12-16-2012, 10:29 AM
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Re: Just turbo'd the K, now a few questions.
What car are you running this turbo k in? I have k eg and I don get traction until 3rd gear. I was gonna go turbo but I would need to upgrade my suspension
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