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01-08-2014, 12:08 AM | #1 |
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Join Date: Dec 2013
Location: Portland, Ore.
Posts: 348
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world war Z, the L59/Vin Z/flex fuel thread
sigh, my LM7 turns out to be a L59 flex fuel motor.
It has flex fuel injectors, and the "ethanol compatible" regulator. As I understand---from what I have found in my search on the subject---these injectors flow more fuel (33#/hr) at a lower pressure (~50psi). *how is the pressure regulated down to ~50psi? -just the regulator yes? *can i just delete the fuel composition stuff and run it on regular gas? any insight into extra costs I might incur trying to use these injectors/harness/fuel rail would help me a bunch. I hope I didn't get burned here. |
01-08-2014, 12:15 AM | #2 |
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Join Date: Dec 2009
Location: Independence Mo
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Re: world war Z, the L59/Vin Z/flex fuel thread
You can just set it up like any regular 5.3. It will run fine on regular fuel since they are designed to run on either type of fuel.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
01-08-2014, 01:33 AM | #3 |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: world war Z, the L59/Vin Z/flex fuel thread
What year is the L59 supposed to be from? Flex fuel trucks kept the return line setup for an extra year, up to (and sometimes through) 2005.
They use a normal truck-style return system for the most part, the only differences being a FPR that is set to about ~48-54psig vs the 58 (up to 62) that the normal gas only setups are running, and different injectors. This is actually cool, for a couple of reasons. You can swap the FPR for a regular truck fpr, but sometimes they can be a pain to find. You can also just swap the fuel rail. The advantage to this is that the Flex Fuel trucks use the car-style EV1/EV6 connector, which is way more common for aftermarket injectors. Regular trucks had the Dephi MultecII injectors (short fatties) which used a less common connector style. So you don't have to re wire or have your harness modded for that which is cool. The flex fuel stuff can be removed from the tune, and I assume you won't be using any of the ethanol "detector" stuff the truck uses to know which fuel is in the tank.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
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01-08-2014, 06:27 AM | #4 |
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Location: Independence Mo
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Re: world war Z, the L59/Vin Z/flex fuel thread
You can't swap a flex fpr for a regular fpr on a truck fuel rail, the rails them selves are different. Also the EV1 and EV6 are two different type of connectors. A flex fuel truck uses the EV6 where as the ls1, or car engines use the EV1.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
01-08-2014, 11:29 AM | #5 | ||
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Location: Portland, Ore.
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Re: world war Z, the L59/Vin Z/flex fuel thread
Quote:
Quote:
This is great info. Thanks for saving me the bucks. Given that the flex fuel injectors and FPR are not that much more expensive (currently) than the regular stuff, I'll probably just try and run the set-up I have. (with the flex-fuel programming deleted) I have read (no direct experience) that the flex fuel injectors are more prone to clogging, especially straight from a wrecking yard. Anyone here have experience with that? Also wondering if there is a way to bench test the FPR? Thanks for all the help fellas. Should be about a month or so till fire-up. So stoked! |
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01-08-2014, 09:17 PM | #6 |
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Location: Independence Mo
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Re: world war Z, the L59/Vin Z/flex fuel thread
Just tried swapping the fpr's again and still no go.
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My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html Last edited by ls1nova71; 01-08-2014 at 09:23 PM. |
01-08-2014, 09:19 PM | #7 | |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: world war Z, the L59/Vin Z/flex fuel thread
Quote:
***this is somewhat incorrect, and I updated the information further down in the next post. I didn't want to edit or delete this post for continuity, otherwise both my and the other posters comments are out of place and even more confusing.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
Last edited by BR3W CITY; 01-09-2014 at 03:29 AM. |
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01-08-2014, 09:29 PM | #8 |
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Location: Independence Mo
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Re: world war Z, the L59/Vin Z/flex fuel thread
I think I'm losing my mind. But my LS 1s have the older style injector plug like a TPI or a LT1, that's why I deleted my comment. Isnt that the EV1?
__________________
My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html |
01-09-2014, 03:27 AM | #9 | |
meowMEOWmeowMEOW
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
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Re: world war Z, the L59/Vin Z/flex fuel thread
Ya its a bag of fun. So injectors can sometimes be called by their manufacturer name (i.e. siemens, delphi etc), but sometimes by their body type (ev1), or their connector (MultecII, Jetronic etC). I get really backwards on this too sometimes, because when you go to double check what you know.....there are about 1000 people telling ya different things.
From the guys at FIC Injectors. Quote:
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
Last edited by BR3W CITY; 01-09-2014 at 03:36 AM. |
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