deej
Well Known Member
I've been thinking about converting the O320-E2D 150hp Lyc I have in the Glastar to fuel injection. I'm trying to make sense out of the various things I've read about fuel injection, and would like to get some feedback from the group. Yes, it is a Glastar versus an RV, but many of the same principles apply, and there is a wealth of knowledge in this group.
I've heard that you get a little more power out of the engine with FI. This apparently has something to do with a carb using about 1/2 inch of inlet air pressure simply in the way that a carb works, so there is 1/2 inch less manifold pressure, thus slightly reduced power. Truth, or fiction?
I've read that you get slightly better gas mileage, with some people reporting up to 1 gal per hour less using FI versus a carb, related to being able to run LOP and also because the FI balances out the fuel to each cylinder. Truth, or fiction?
Airflow Performance FM-150 claims to be compatible with mogas using 10% ethanol (E10). They also offer the FM-100 unit which is also compatible with E10, and offers a recirculating purge valve option. Anyone have any experience using these FI systems?
http://www.airflowperformance.com/html/site_html.html
I am having a hard time finding information on just how much of a PITA it might be to convert from carb to FI, and exactly what parts I'd need to do it. In addition to the FI unit itself, I'd also have to replace the mechanical fuel pump with either a mechanical or electrical high pressure pump, but I'm not sure what else I might need. My air intake is the standard huge NACA scoop on the right side of the cowling. Can I still use this, and the associated air intake hoses to go to the FI unit, or would I have to rework the cowling in some manner?
If I went with one of these FI systems, the only thing left that may not be
compatible with mogas is the mechanical fuel pump. There is an
electrical fuel pump option which is quite expensive, but not having an
electrically redundant electrical system I'd be hesitant to use this option:
http://www.flyefii.com/add_components/BPM/BPM.htm
Has anyone converted from carb to FI and can offer some insight?
Any concerns combining an FI unit and a P-mag (replacing the right mag)?
Just trying to learn about all this, and ultimately aiming for an 87 octane E10 compatible fuel system if at all possible.
Also, if anyone has any information with regards to making a carb and/or
low pressure mechanical fuel pump compatible with mogas containing
ethanol, I'd like to hear from you.
Thanks,
-Dj
I've heard that you get a little more power out of the engine with FI. This apparently has something to do with a carb using about 1/2 inch of inlet air pressure simply in the way that a carb works, so there is 1/2 inch less manifold pressure, thus slightly reduced power. Truth, or fiction?
I've read that you get slightly better gas mileage, with some people reporting up to 1 gal per hour less using FI versus a carb, related to being able to run LOP and also because the FI balances out the fuel to each cylinder. Truth, or fiction?
Airflow Performance FM-150 claims to be compatible with mogas using 10% ethanol (E10). They also offer the FM-100 unit which is also compatible with E10, and offers a recirculating purge valve option. Anyone have any experience using these FI systems?
http://www.airflowperformance.com/html/site_html.html
I am having a hard time finding information on just how much of a PITA it might be to convert from carb to FI, and exactly what parts I'd need to do it. In addition to the FI unit itself, I'd also have to replace the mechanical fuel pump with either a mechanical or electrical high pressure pump, but I'm not sure what else I might need. My air intake is the standard huge NACA scoop on the right side of the cowling. Can I still use this, and the associated air intake hoses to go to the FI unit, or would I have to rework the cowling in some manner?
If I went with one of these FI systems, the only thing left that may not be
compatible with mogas is the mechanical fuel pump. There is an
electrical fuel pump option which is quite expensive, but not having an
electrically redundant electrical system I'd be hesitant to use this option:
http://www.flyefii.com/add_components/BPM/BPM.htm
Has anyone converted from carb to FI and can offer some insight?
Any concerns combining an FI unit and a P-mag (replacing the right mag)?
Just trying to learn about all this, and ultimately aiming for an 87 octane E10 compatible fuel system if at all possible.
Also, if anyone has any information with regards to making a carb and/or
low pressure mechanical fuel pump compatible with mogas containing
ethanol, I'd like to hear from you.
Thanks,
-Dj