M73 injectors

[Alex S]

Are there any alternatives to using stock units?

I'm going throught the motor and broke one of the o-ring retainings plastic pieces on stock injector. At close to $80 a piece from BMW they are kind of pricey.

Anything else fits?

[Brumel]

They are called "Pintle Caps" and are easy to replace,
I have a few to spare at no cost, let me know if you
want them.

[Alex S]

I don't think they are replaceable...

See photos:

http://e30.us/2001-750iL/engine/injectors/

[Brumel]

Yes they are.....each pintle cap goes for about $0.50 each
An injector service kit for my 7 was $32.00.

It included 16"O"rings, 8 filter and 8 pintle caps.

Check "Mr Injector" or "Injector Rehab" for more
Information

[Alex S]

740 injectors are different.

They are made by Siemens. 740s are Bosch or Lucas

Did yours look like this when apart?

The cap with vacuum hose feed broke off immediately as well...

http://e30.us/2001-750iL/engine/injectors/IMG_8498.jpg

http://e30.us/2001-750iL/engine/injectors/IMG_8499.jpg

[Brumel]

Sorry about that, no rehab can fix that.

[Edwin NL]

Thats done, just get a new one (OEM) to rest your mind

[Alex S]

Are there any alternatives to using stock units?

Anything else fits?


My original question.

Any feedback on this?


Thats done, just get a new one (OEM) to rest your mind

All 12 of them?

The plastic on them is shot and if you touch them it shatters in pieces.

I'd like to at least replace the o-rings, but seeing how it went with one I'm not too optimistic about the prognosis for the rest.

Thanks.

[Alex S]

I installed a set of Bosch Type III injectors with modified plumbing. Doing some testing now. Runs pretty good.

[darkstarmedia]

I have wondered about the purpose of the outer shell thing with the pipes connected to the secondary air system... is it just for cooling?

Richard

[Alex S]

I have wondered about the purpose of the outer shell thing with the pipes connected to the secondary air system... is it just for cooling?

Richard

Oil and gas vapors recirculation.

Bosch Type III injectors installee instead of stock units.
I'm working on a kit to accept regular Bosch injectors.
So far no SES lights.
Stay tuned...

[LasVegasE38]

I think i've seen somewhere that someone was using Mustang injectors?

[meteck]

X has tested the mustang injectors and says they are a direct replacement. Cheap on Ebay. Search and find his writeup on the subject.:)

[Alex S]

X has tested the mustang injectors and says they are a direct replacement. Cheap on Ebay. Search and find his writeup on the subject.:)

Not on M73N.

I didn't mention that in the beginning, sorry.

[mcallister]

I have the "Ford Mustang" injectors, they work great!! Has better throttle response and can really feel the difference when I get it about 4K rpm. Also, I am getting 1.2 miles per gallon better. : )

These:

http://i434.photobucket.com/albums/qq67/mcallister95/CanonSD1000418.jpg

[Alex S]

I have the "Ford Mustang" injectors, they work great!! Has better throttle response and can really feel the difference when I get it about 4K rpm. Also, I am getting 1.2 miles per gallon better. : )


Right. I'm sure they work great on your M60.

We are talking about M73N engine here...:nono

1998-2001 750iL