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SVT Shelby GT500
Methanol Injection
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<blockquote data-quote="Willie" data-source="post: 15985268" data-attributes="member: 14133"><p>Here's a quick datalog from tonight. It is representative of what I see consistently, although the temp drop delta varies, depending on so many other conditions. Tonight, I ran through 1st, 2nd, and 3rd. I was not close to WOT but sufficiently into it to force open loop. Also, my methanol pump was running at low speed for approx. 50 percent of the time. It was night, on an open range, two lane road. So I have to be very careful of coyotes and those "invisible" black 500 pound cows. It was 105 today, but cooled down to 98 when I datalogged. My IAT2 started at 129 degrees and when I lifted at the top of third, it was 117 degrees. So the temp decreased 12 degrees while in boost. Have you seen this before? At this point, the methanol that's still in the intake tract cools the air even further, tonight another 7 degrees, then it slowly returns to 129ish....</p><p></p><p>[ATTACH=full]1509872[/ATTACH]</p><p></p><p>It's crucial to note that you will never see this kind of result with a one or two nozzle system. Mine was designed by yours truly after numerous attempts over many years at different configurations and different nozzle sizes.</p><p></p><p>Try to remember guys that i do not use methanol to control temp. First and foremost, it is used for knock suppression. Suppressing knock with methanol allows you to increase boost / timing and load (V.E.). The temperature drop you see is essentially, "it is what it is". I do not take credit for this info. I learned it from the Buick Grand National guys... I'd say 95 percent of intercooled GN guys run methanol, and they use 100 percent, not this 50/50 like we apparently do here..... (another point we need to examine with open eyes and an open mind).</p></blockquote><p></p>
[QUOTE="Willie, post: 15985268, member: 14133"] Here's a quick datalog from tonight. It is representative of what I see consistently, although the temp drop delta varies, depending on so many other conditions. Tonight, I ran through 1st, 2nd, and 3rd. I was not close to WOT but sufficiently into it to force open loop. Also, my methanol pump was running at low speed for approx. 50 percent of the time. It was night, on an open range, two lane road. So I have to be very careful of coyotes and those "invisible" black 500 pound cows. It was 105 today, but cooled down to 98 when I datalogged. My IAT2 started at 129 degrees and when I lifted at the top of third, it was 117 degrees. So the temp decreased 12 degrees while in boost. Have you seen this before? At this point, the methanol that's still in the intake tract cools the air even further, tonight another 7 degrees, then it slowly returns to 129ish.... [ATTACH=full]1509872[/ATTACH] It's crucial to note that you will never see this kind of result with a one or two nozzle system. Mine was designed by yours truly after numerous attempts over many years at different configurations and different nozzle sizes. Try to remember guys that i do not use methanol to control temp. First and foremost, it is used for knock suppression. Suppressing knock with methanol allows you to increase boost / timing and load (V.E.). The temperature drop you see is essentially, "it is what it is". I do not take credit for this info. I learned it from the Buick Grand National guys... I'd say 95 percent of intercooled GN guys run methanol, and they use 100 percent, not this 50/50 like we apparently do here..... (another point we need to examine with open eyes and an open mind). [/QUOTE]
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