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| 4.9 e85 dyno (Page 3/4) |
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La fiera
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JUN 08, 08:12 PM
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| quote | Originally posted by lou_dias:
I used some Ford Thunderbird 4.6 DOHC injectors. Stock pressure but they flow more because Ford rates them differently... Bought them along with a custom made fuel rail to mount them. Hasn't failed me yet! |
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So they are 19# then. If you want to just use E85 without any tuning just get a set of 22# to get to your goal of 200WHP.
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lou_dias
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JUN 09, 12:29 AM
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| quote | Originally posted by La fiera:
So they are 19# then. If you want to just use E85 without any tuning just get a set of 22# to get to your goal of 200WHP. |
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Ah! But that's the beauty of using Ford #19 injectors. They are equivalent to GM 22#. 
Also, I need to have my tuner adjust the voltages to match the Ford specs...
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La fiera
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JUN 09, 07:55 AM
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| quote | Originally posted by lou_dias:
Ah! But that's the beauty of using Ford #19 injectors. They are equivalent to GM 22#.
Also, I need to have my tuner adjust the voltages to match the Ford specs... |
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The only way they would be equal to each other is if the Fords run on higher pressures that's why I asked what rail pressures is the engine running on.
If you were to install the 22# your dyno's AFR would've been right on target with no ECU VE adjustment instead of going extremely lean.
Also, every injector size spec is not fixed, they change proportionally with a change of rail pressure. The Fords #19 will not flow the same if the pressure is raised.
The higher the pressure you run them the less injector size you need. Right now you maxed out your 19# for the power you are making, if you increase your
fuel pressure another 5psi assuming you are running 45psi of fuel rail pressure, with the same 19# you shouldn't have any problems reaching 200WHP.
Of course, that's if the breathing capabilities of the engine is up to par with the fuel flow.
Keep it up Lou, I'm rooting for you!
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darkhorizon
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JUN 09, 09:08 AM
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I run my s2000 and my old GTP on e85 without any tune. All you need to do is roughly double the size of the injectors and let it rip! You'll want to see about 11.5-11.8 afr at wide open for max power on e85.
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Warlordsix
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JUN 09, 10:46 AM
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| quote | Originally posted by lou_dias:
I used some Ford Thunderbird 4.6 DOHC injectors. Stock pressure but they flow more because Ford rates them differently... Bought them along with a custom made fuel rail to mount them. Hasn't failed me yet! |
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Hey, Lou....tell us about this "custom made fuel rail." Photos would be great. Kinda interesting.
Thanks.
Ernie------------------
'87 Fiero 4.9 5-speed
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lou_dias
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JUN 09, 01:01 PM
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| quote | Originally posted by La fiera:
The only way they would be equal to each other is if the Fords run on higher pressures that's why I asked what rail pressures is the engine running on.
If you were to install the 22# your dyno's AFR would've been right on target with no ECU VE adjustment instead of going extremely lean.
Also, every injector size spec is not fixed, they change proportionally with a change of rail pressure. The Fords #19 will not flow the same if the pressure is raised.
The higher the pressure you run them the less injector size you need. Right now you maxed out your 19# for the power you are making, if you increase your
fuel pressure another 5psi assuming you are running 45psi of fuel rail pressure, with the same 19# you shouldn't have any problems reaching 200WHP.
Of course, that's if the breathing capabilities of the engine is up to par with the fuel flow.
Keep it up Lou, I'm rooting for you! |
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They are essentially GM 22#. Trust me. Ford rates them at a different fuel pressure and that's why they work out that way. What happened is 10 years ago, I had someone turn down my BPW 15% once then another 15% to compensate for my limp mode. It was still rich with 87 octane. I was trying to overcome limp mode and the bigger injectors... So I have no worries I have enough injector. We'll just dial it back up while reducing fuel >3600 rpm.
So 10ish years ago with 30% fuel reduction on 87 octane, I was at 11:1 A/F ratio on the top end. Now you know why I felt comfortable just winging it with E85... However...the limp mode issue has been fixed. OOPS![This message has been edited by lou_dias (edited 06-09-2020).]
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lou_dias
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JUN 09, 01:08 PM
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| quote | Originally posted by Warlordsix:
Hey, Lou....tell us about this "custom made fuel rail." Photos would be great. Kinda interesting.
Thanks.
Ernie
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I bought it off forum member 2feido back in 2008. You should probably PM him for details. I never bothered taking pics back then...I was hot to get the Allante intake installed.
It's sold purpose was to use the Bosch Design 3 injectors from the Thunderbird...[This message has been edited by lou_dias (edited 06-09-2020).]
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Warlordsix
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JUN 09, 04:06 PM
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| quote | Originally posted by lou_dias:
I bought it off forum member 2feido back in 2008. You should probably PM him for details. I never bothered taking pics back then...I was hot to get the Allante intake installed.
It's sold purpose was to use the Bosch Design 3 injectors from the Thunderbird...
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Hmmmm…..OK, as far as I know the Bosch III are direct replacements for the Caddy OEM injectors on the 4.9, no?
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Spadesluck
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JUN 09, 04:13 PM
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| quote | Originally posted by Warlordsix:
Hmmmm…..OK, as far as I know the Bosch III are direct replacements for the Caddy OEM injectors on the 4.9, no? |
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That is the consensus, yes.
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lou_dias
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JUN 10, 01:01 PM
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| quote | Originally posted by Warlordsix:
Hmmmm…..OK, as far as I know the Bosch III are direct replacements for the Caddy OEM injectors on the 4.9, no? |
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I may have bought the custom one because I couldn't get any Allante one. The person I bought the intake from didn't have the fuel rail. My memory of 2008 isn't 100% perfect.
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