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Old 10-04-2017, 12:01 AM   #61 (permalink)
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Originally Posted by mazdamx640 View Post
I'm interested in putting 12 hole injectors on my 99 f150 4.6 I know the stock is 19lb but not sure on body or electrical connector any idea on what might work?
I can't find very many 12 hole injectors at all, and cannot find anything that flows 19 lb/hr. Nearest I can figure, your injector cross-references to a Bosch 0280150955. That is an EV1 single pintle design with a Jetronic connector.

You may still get some improvement in FE by switching from your existing EV1 injectors to EV6 injectors that have 4 holes. I found injectors that will probably work, and they are p/n 0280155709. However, they apparently are only found in Europe.

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Old 10-04-2017, 12:21 AM   #62 (permalink)
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t vago.... How did you find a comprable fuel injector? I know this is a rather open ended vague question, but did you just find the parameters of your stock injectors and then check RockAuto one by one until you found what you wanted? I have wanted to do this swap on my Ranger for a long time but am completely uneducated on the technical stuff. I can turn a wrench really well, but don't want to make any mistakes in sizing. When I look on RockAuto I can't tell how many holes the injectors have. I still have the stock single hole ones so even a 4-hole would be an improvement. I would love more holes if possible. Also isn't there a diference in high impedance and low impedance injectors. Not sure which I have (low I think) but I'm sure they aren't compatible. Any insight you have would be great.

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Basically, I do a lot of searching. For instance, I figure that your Ford Ranger uses an injector with an EV1 design, has a Jetronic D electrical connector, uses a 2.4 ohm resistance injector, and is rated at 34 lb/hr at 43.5 psig. It appears to be a peak/hold design.

And... unfortunately, I can find no injectors that have even an EV6 4-hole design that also has this flow rate and this electrical resistance.
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Old 10-04-2017, 07:55 PM   #63 (permalink)
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Quote:
Originally Posted by t vago View Post
You may still get some improvement in FE by switching from your existing EV1 injectors to EV6 injectors that have 4 holes.
Jeep 4.0 runners report good improvements in older threads by going to 4 hole. However, 12 hole are available for the 4.0 now.
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Old 10-05-2017, 01:17 PM   #64 (permalink)
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I don't want to hijack the thread, BUT I'm trying to find 12 hole, high impedance, ev6 injectors somewhere north of 24lb/hour (260hp v6).

Any ideas?

Also, I found a chart that shows my 280-156-300's as both 24 and 34 lb/hr??
Stan Weiss' - Electronic Fuel Injector (EFI) Flow Data Table

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