View Poll Results: What would you rather see a Flex Fuel dyno test with?
Low boost TVS supercharger and 11:0 compression
2
14.29%
High boost TVS with 10.2 compression
4
28.57%
High compression stroker
4
28.57%
High compression stock cube
4
28.57%
Twin-screw blower
0
0%
Voters: 14. You may not vote on this poll
Poll: Would you rather see a Flex Fuel dyno test...
12-02-2015, 08:19 AM
#1
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Poll: Would you rather see a Flex Fuel dyno test... I am working on a few Flex Fuel stories and wanted to get some input. The test would be 93-octane pump gas versus E85 out of the pump with an LS based car/truck. It needs to be able to run on both, so it can't be 14:1 or anything crazy.
Last edited by Scott@GMHTP; 12-02-2015 at 10:38 AM.
12-02-2015, 11:49 AM
#3
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Well that would be awesome, too. I do have a couple of high compression strokers with E38 computers at my disposal as well that were planning on using a Flex Fuel sensor. That could certainly be a separate story.
12-02-2015, 12:55 PM
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If you are referring to GMHTP, that would be a little hard considering it is now a "dormant" brand (meaning it is not in print). I am the editor of Vette now and a contributor to quite a few magazines, websites, etc. Sorry for the confusion with the name. I really do need to change that.
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12-03-2015, 08:27 AM
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Well it is a TVS...so think 1.9L at 6-7psi versus 10+psi with a 2300. I realize that is not high boost by turbo, centrifugal, or even large roots/screw blower standards.
12-10-2015, 05:40 PM
#9
I like the story idea, both ways.
I think it would be important to see the difference.
Perhaps refference the many SAE publications (Last couple years, maybe) on the matter.
Vaporization is is going to be the key to unlocking the E85's true potential.
I think it would be important to see the difference.
Perhaps refference the many SAE publications (Last couple years, maybe) on the matter.
Vaporization is is going to be the key to unlocking the E85's true potential.
12-10-2015, 06:53 PM
#10
Say hello to extreme high pressure direct injection. Once the aftermarket (heads, injectors) catches up to the new lt1/lt4 we'll see some sweet stuff.
12-16-2015, 02:14 PM
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12-16-2015, 02:15 PM
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12-16-2015, 03:09 PM
#14
The TVS 1.9L makes some decent power at 17PSI, granted its outside the "recommended" range for that blower. We normally run them at 13-14PSI but wanted to see what it would do. Actually wasn't all that far off from what I see the 2.3L guys running.
12-17-2015, 02:58 AM
#15
There is a vast variety of various testing that has been published since 07 that deals with everything from cold start testing to emissions to corrosiveness, etc.
Here's one aspect that I feel is pertinent: Injectors. Not all injectors atomize the fuel the same. Using a gas spectrum analyzer to look at gas mix ratios for various injector designs would be a good place to start. There are x+x number of injectors out there in the flow range guys use to make between 600-1000HP. Pick some more popular choices.. Use those in a head to head to see how they stack up. Run it on the dyno & get gas samples to see if vaporization tracks with power & mix ratios. If you are going to be changing CR then that would be able to be evaluated as well as having an impact on gas mix ratios.
By comparing to raw data such as pulse-width & air mass, against the actual mix ratios, will give people a better idea of how this ties into combustion engine properties that impact calculated & real world inputs & outputs.
12-17-2015, 03:04 PM
#17
Ofcourse it is. It's the nature of the beast. At the same time we are scraping the surface in what it can really do.
I say N/A & turbo it because a turbo is more efficient from the get go & with the current A/F's being used, it needs all the help it can get.
I say N/A & turbo it because a turbo is more efficient from the get go & with the current A/F's being used, it needs all the help it can get.
12-26-2015, 10:55 AM
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Hey I have a quick question will a flex fuel injector off a 2005 Yukon 5.3 work in a 2000 trans am with a Ls6 intake and Holley fuel rail I'm sure I'm gone have to buy the EV1 to EV6 adapter from what I researched
04-08-2016, 11:13 AM
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Last edited by Scott@GMHTP; 04-08-2016 at 11:20 AM.
04-08-2016, 11:18 AM
#20
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Thanks everyone for your input. The first story is now online with Truckin' magazine. Kraftworks converted my 2008 Trailblazer SS to Flex Fuel using its own kit, factory GM Flex Fuel injectors, and a Lingenfelter high-flow pump module. For more details, please check out the story:
http://www.trucktrend.com/how-to/eng...or-more-power/
I will be doing a follow-up to this soon based on your input as well as some other stories using E85.
http://www.trucktrend.com/how-to/eng...or-more-power/
I will be doing a follow-up to this soon based on your input as well as some other stories using E85.