Updated injectors for M42

[djmossm42]

Hello,

I've been searching the forums/threads for options for updating my M42 injectors. I know people use 700, 710, and have even seen 556 mentioned but I came across these which are advertised as a direct upgrade for the 91-94 318i/iS. (0 280 156 013)

http://www.fiveomotorsport.com/product-search/?v=16383

Any thoughts/experience?

While looking around I also found this very detailed spreadsheet with Bosch injector data.

http://www.usrallyteam.com/content/products/injector/Bosch_Injector_data.xls

I found (0 280 158 107) and the specs are very close, but the resistance is 12 ohm as opposed to 15.3 ohm and the distance between o rings is 60.65 as opposed to 60.5 yet the overall length is the same 77. Need a mechanical drawing to see where the 0.15 shift is.

Source

http://adaptronic.com.au/forum/index.php?topic=2636.0

My Car info:

1991 318iC

Questions:

1. Does the engine management accept a range of impedance values (12-16) and adjust based on the actual resistance values?

2. Did E30 M42s have different injectors than E36 M42s during the same time frame 91-94

3. Is the diameter standard for all Bosch injectors? Don't want fuel leaks.

4. What's the difference between EV1, EV6, etc. Is it just a generation label? Will EV14 work without having to upgrade engine management?

Thanks,
Bryon

Sent from my SGH-T769

[mr ilia]

Too many questions here. Read the thread below.

http://www.m42club.com/forum/index.php?topic=233.0

[djmossm42]

Sorry for all the questions, Just looking for some direct answers. I read through that thread prior to posting and ended up a littler more confused, but it looks as though the (0 280 150 556) is a close match in both form and function. If anyone can shed some light that would be very much appreciated.

[vpilarrt]

I've run the 19 lb/hr 4 pintle yellow Mustang (IIRC they're the 0 280 150 556) injectors in my M42 for 3-4 years with no issues. Does idle smoother but can't really tell if they give more power.

[roguetoaster]

The general consensus seems to be that changing to 4 pintle injectors offers only a crypto upgrade and is not worth it. Same is true of going to slightly higher flowing injectors. If I were you I would spend the money on getting a set of stockers cleaned and matched.

All of this is moot if you are upgrading the management or building the engine of course.

[djmossm42]

Thanks for the feedback. Didn't expect much in terms of power, but was looking for smoother running and possibly a few more mpg.

I won't be heavily modifying the engine but considering Mark D chip, and COP kit in addition to either having my stock injectors reconditioned and flow matched, or updating to the 556s.

May even take a chance on the latest generation 107 injectors depending on what I find after some more research.

Thanks again.





Sent from my SGH-T769