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Post by Deleted on Apr 14, 2009 12:11:46 GMT -6
When I said "2009 car" I meant the one that we're building currently. go to www.jayhawkmotorsports.com and you can see some pictures of what kind of car we make, it's like a big go-kart that goes 130mph. My point being that we take a stock engine (Aprilia SX55 V-Twin) and completely re-do everything so that it's E85 compatible. We're not running E85 in one that requires 100 haha, no worries. It has been done around here to a classic before, however... but we don't need to get into that again. ditto lets leave that part of the ocean at rest...no one likes to travel that route! |
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Post by filmjay on Apr 14, 2009 12:18:03 GMT -6
Ahhhhh....for karts! Nice!
And I won't say that don't believe ya...I've just heard nothing but horror stories from kids that live near E85 stations. HAHA!
I'd LOVE to know exactly what he's done and what kinds of problems he might or might not be having. Does he have a progress or build thread?
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Post by Aurora40 on Apr 14, 2009 13:25:59 GMT -6
You also MUST have a minimum compression ratio of about 12:1. The 10.5:1 in 1st gen Aurora won't cut it...and the later models have even less compression. I hope you don't take offense, but you seem to be on some sort of static compression ratio kick? Both of GM's flex-fuel V6's have static compression ratios of 9.8:1, and the 5.3L truck V8 is 9.9:1. These (obviously) run just fine on E85. To me, the real and immediate danger of using a tank of E85 for the heck of it is that it has a much different stochiometric ratio than gasoline. I would imagine you could easily ruin your engine by running extremely lean. You need something like 30% more fuel with E85 than gasoline and a given quantity of air. I doubt your car can handle such a disparity in stock form. And if you went wide-open where there is no O2 feedback, the fuel maps would be way lean. Aren't the pump nozzles different though so that you can't accidentally pump it into your gasoline car? |
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Post by rvrrat on Apr 14, 2009 15:13:56 GMT -6
Ahhhhh....for karts! Nice! And I won't say that don't believe ya...I've just heard nothing but horror stories from kids that live near E85 stations. HAHA! I'd LOVE to know exactly what he's done and what kinds of problems he might or might not be having. Does he have a progress or build thread? just Pm Him, he usually doesnt do build threads. |
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Post by filmjay on Apr 14, 2009 18:03:31 GMT -6
I hope you don't take offense, but you seem to be on some sort of static compression ratio kick? no sir, no offense taken. CR is very important using E85. Sorry though....I've been piston and head shopping lately. LOL!  Yes they certainly do...with VVT and Active Fuel Management systems. Not to mention piston coolers that are basically little injectors that squirt oil onto the pistons to prevent detonation (b/c of the low CR.) AND a diamond-like coating on the injector valves for E85 models to further help plug resistance and "hot fuel" capability. Not really a fair comparison to the technology in our cars that's a minimum of 6 years up to 14 years old. The high static CR I've stated is for older engines converted to E85, not new engines that have the cutting edge of technology in their fuel and air delivery systems. (The VVT system received the Popular Mechanics award for "breakthrough technology") I have to agree w/ ya there. Hence my focus on CR in (converted, sry I didn't make that clear) E85 engines. I dunno. It's not readily available in my area just yet. But my mentioning of pumps had to do with the availability of straight race gas at a pay pump, not E85 Good postin'! I'm liking this place more and more!!!  |
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