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porschevw
Samba Member
Joined: October 30, 2005
Posts: 123
Location: Pace, Fl.
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 Posted: Tue Mar 23, 2010 7:10 pm Post subject: 2411 cc fuel injection? |
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I am wondering if it's possible to put a stock fuel injection system on a 2411 cc type IV. I'm just kicking some ideas around.
Thanks,
Jon |
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maximan1
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Joined: January 07, 2008
Posts: 1354
Location: Anaheim, California
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| Posted: Tue Mar 23, 2010 7:24 pm Post subject: |
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I don't see why not.
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1978 Transporter, 2.0L FI |
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porschevw
Samba Member
Joined: October 30, 2005
Posts: 123
Location: Pace, Fl.
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| Posted: Tue Mar 23, 2010 7:27 pm Post subject: |
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| Wouldn't it need more fuel? or will the computer make up the difference? |
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SGKent 
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Joined: October 30, 2007
Posts: 42597
Location: at the beach
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| Posted: Tue Mar 23, 2010 7:27 pm Post subject: |
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no. Not "stock."
The stock 2.0 system peaks on fuel delivery about 4400 RPM. Beyond that it goes lean as it can't deliver the fuel. That is why they all pulse together. At 2.4 liter you will push it lean approximately 20% sooner, about 3600 RPM, assuming the manifold and exhaust flow the air needed.
You might be able to adapt a set of injectors and computer for a 2.4 liter motor.
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"Most people don't know what they're doing, and a lot of them are really good at it." - George Carlin |
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raygreenwood
Samba Member
Joined: November 24, 2008
Posts: 23150
Location: Oklahoma City
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| Posted: Wed Mar 24, 2010 12:13 pm Post subject: |
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| SGKent wrote: |
no. Not "stock."
The stock 2.0 system peaks on fuel delivery about 4400 RPM. Beyond that it goes lean as it can't deliver the fuel. That is why they all pulse together. At 2.4 liter you will push it lean approximately 20% sooner, about 3600 RPM, assuming the manifold and exhaust flow the air needed.
You might be able to adapt a set of injectors and computer for a 2.4 liter motor. |
Factually if you were following the same fuel curve with the same cam and all the same lift and timing.....a stock EFI system could feed any size engine. The differences in baseline volume are simply increased by larger injectors and increases in fuel pressure. You could feed a 5.0 V-8 in the blicnk of an eye with modified L-jet.
The real problem is that .....the stock runner tubes, plenum and TB will not feed an engine that big. Add to that, an engine that big will generally NOT be able to use the same cam profile. It will need more lift and duration. This will change the airflow pattern. The AFM could probably be adjusted (it definately has enough internal airflow capability for a much larger engine)......but this is some serious tuning with no guarantee.
You will need custom runners, plenum and TB and larger injectors, a specific cam and exhaust, serious tuning to the AFM and an aftermarket regulator that can be adjusted.
The stock 1.8 and 2.0 bus runners were some of the smallest. The 914 2.0 some of the largest. A 2.0 bus plenum custom runners and something like a 60mm TB would be a start.
You would do better to use an aftermarket programmable system like megasquirt. Ray |
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fusername
Samba Member
Joined: March 15, 2006
Posts: 2899
Location: Boston MA
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| Posted: Wed Mar 24, 2010 1:56 pm Post subject: |
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you could probably replace the injectors with a larger set that fits the same bungs but flows more fuel per event. then simply re adjust teh aFM to match.
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