Alternative Fuel Injectors

[scarceller]

This injector may work, I know the bosch 364 is a decent replacement and this one cross refs to it. I have tested the 364 injectors in car and validated they are correct with WBO2 across many running conditions, including WOT sweep testing. If you can locate a set of 364 injectors those work perfectly. See post #206 in this thread.

Originally Posted by Wayne 962

So, I've been doing a search for alternative part numbers for injectors, and this page came up:

https://www.********.com/en/moreinfo.php?pk=533438&jsn=262



This would seem to imply that this AC DELCO injector (probably made by BOSCH for them) is similar / interchangeable with the following?

ACDELCO 2172269

Alternate/OEM Part Number(s): 0280150201, 0280150352, 0280150360, 0280150364, 0280150634, 13641273272, 19110469

The 360 and 364 numbers lend credence to the theory?

Here's another discussion where someone points out the same thing:

https://www.impactbumpers.com/forum/index.php?/topic/30960-32-carrera-fuel-injector-alternative/

I wonder if anyone has done any further research on this? Injectors are available from Porsche for about $350 each (and I'm not sure if they are rebuilt or new!), and these are $40 each it would seem and still available?

-Wayne

[Flynt]

Originally Posted by Wayne 962

So, I've been doing a search for alternative part numbers for injectors, and this page came up:

https://www.********.com/en/moreinfo.php?pk=533438&jsn=262



This would seem to imply that this AC DELCO injector (probably made by BOSCH for them) is similar / interchangeable with the following?

ACDELCO 2172269

Alternate/OEM Part Number(s): 0280150201, 0280150352, 0280150360, 0280150364, 0280150634, 13641273272, 19110469

I'm running those. Mods are Euro P/C, Ingo chip, Fuel knob on ecu at 3rd setting (6% fuel bump, stock timing I think, have to check) sport muffler (dual out). Wideband 02 in the tailpipe says 10-12 across the board. Plugs look great, engine runs very smooth and has plenty of power.

[MIAdragon]

I’ve been running 0280155784’s in my 84 3.2, completely stock, zero issues.

[Wayne 962]

Originally Posted by jjeffries

Pelican is now selling a no-name injector first the 944/924S, less than $40 each (maybe also for 3.2 Motronic’s too? I haven’t looked).

These are GB Remanufactured. I hear they are okay (the return rate is not too terrible), so they might work well. $10 core charge on each injector I believe...

-Wayne

[Wayne 962]

Originally Posted by scarceller

This injector may work, I know the bosch 364 is a decent replacement and this one cross refs to it. I have tested the 364 injectors in car and validated they are correct with WBO2 across many running conditions, including WOT sweep testing. If you can locate a set of 364 injectors those work perfectly. See post #206 in this thread.

I'm going to take my stock ones back to RC Fuel Injection for yet another cleaning. I've had good luck with them in the past - this past time I think a fuel contamination issue is what clogged these up. I'm going to go through the entire system and make sure it's clean before installing these new ones...

-Wayne

[jjeffries]

Maybe adding something with the Lucas brand name would be bad juju?

https://www.fiveomotorsport.com/53212101-fuel-injector/

John

[johnman001]

Originally Posted by scarceller

First, I respect that you disagree and I will be the first to say I am sometimes wrong but here is what I see by looking at the DME schematic. I do not know much about how or if Hi-imp injectors will work in our Carrera and I agree that much testing would be required. However, I disagree with you on how the stock injectors are wired to the DME, from what I see they ARE wired in parallel. Please read on.

It clearly shows that pin 14 & 15 of the DME harness are the feed lines to the injectors. One pin feeds the 3 injectors on one side while the other feeds the other 3. But in the schematic it also shows pin 14 & 15 tied together and being supplied only ONE signal from the drive transistor.

Here is the entire schematic: you can also get it here in PDF form:
http://members.cox.net/widebody//DME/Schematic/911_an.pdf
http://members.cox.net/widebody//DME/Schematic/911_dig.pdf
Look at the 911_an.pdf (Analog Board) and then look at how and what pins 14 & 15 are connected to. My conclusion is that ALL 6 injetors get the same exact signal. Furthermore, it is driven by only 1 transistor T402 that is a Darlington style transistor part #RBDT65A.

If after reviewing the schematic you still feel I am not correct I'd love to discuss this. I am not always 100% certain and am open to furthering my understanding. Can anyone else help here?

Here is the schematic but it's best to download it in PDF version:



Here is the wire diagram for how the injectors are wired to the DME, this is from the DME-Test Plan:

First off, sorry for going so far back in an old thread, but.....

Sal, is it possible to re-post the two schematic PDFs (911_dig.pdf & 911_an.pdf) as the links are dead. Thank you!

[wazzz]

Originally Posted by johnman001

First off, sorry for going so far back in an old thread, but.....

Sal, is it possible to re-post the two schematic PDFs (911_dig.pdf & 911_an.pdf) as the links are dead. Thank you!

PM me your email and I can send you a copy.

[almostordinary]

Just a quick bump.

Wanted to see what my alternate routes would be to get some decent injectors before I pull mine to send out, again, to get cleaned via RC fuel injection.

Thinking I got some contaminants in mine before I fully overhauled the fuel system.

Chatting w Steve Wong about a current issue and he's leaning toward the injectors... I'm going to test them this weekend using an infrared temp tool to test cylinder head temps to see which one(s) may be misbehaving... but curious to see if anyone has links to options they've used, since the links in this thread are all expired.

I googled, 0280155784 and immediately got served an Amazon link with 6 for $45... not really instilling confidence... Also saw the GB brand our host sells, aside from the $15 core... Curious to see if anyone's been running them successfully.

My build:
87 Carrera
SW ReFlowed 28pin ECU
SW CAT, sport muffler 28pin chip
Full fuel system redo
AEM wideband
Fabspeed Supercup Muffler

My build is farely tame, just dealing with an intermitent fuel mixture issue that's now fully come down to the injectors.

Thanks,
Ian

[mysocal911]

Originally Posted by almostordinary

Just a quick bump.

Wanted to see what my alternate routes would be to get some decent injectors before I pull mine to send out, again, to get cleaned via RC fuel injection.

Thinking I got some contaminants in mine before I fully overhauled the fuel system.

Chatting w Steve Wong about a current issue and he's leaning toward the injectors... I'm going to test them this weekend using an infrared temp tool to test cylinder head temps to see which one(s) may be misbehaving... but curious to see if anyone has links to options they've used, since the links in this thread are all expired.

I googled, 0280155784 and immediately got served an Amazon link with 6 for $45... not really instilling confidence... Also saw the GB brand our host sells, aside from the $15 core... Curious to see if anyone's been running them successfully.

My build:
87 Carrera
SW ReFlowed 28pin ECU
SW CAT, sport muffler 28pin chip
Full fuel system redo
AEM wideband
Fabspeed Supercup Muffler

My build is farely tame, just dealing with an intermitent fuel mixture issue that's now fully come down to the injectors.

Thanks,
Ian

In the future, you might consider other DME ECM sources in SoCal, as referenced on Pelican Parts before, when having 911 3.2 running problems.
One referenced recently has been repairing DME ECMs and providing personal help to Porsche dealers/independents & 911 3.2 owners for over 30+ years.
You could always call them for help, they don't charge Pelican Parts users for Porsche help. Don't replace unnecessary parts and waste time and money.

[almostordinary]

Not folllowing. Any insight on injectors?

[SkunkWorks]

Originally Posted by mysocal911

In the future, you might consider other DME ECM sources in SoCal, as referenced on Pelican Parts before, when having 911 3.2 running problems.

One referenced recently has been repairing DME ECMs and providing personal help to Porsche dealers/independents & 911 3.2 owners for over 30+ years.

It's a shame that one "source" comes off as a knob and takes every opportunity to knock their competition.

[mysocal911]

Originally Posted by almostordinary

Not folllowing. Any insight on injectors?

It's very unlikely that all the injectors are bad, so disconnect one injector at a time to see the effect.
Removing and comparing spark plugs can help in evaluating injectors. Doing the shotgun approach to troubleshooting wastes time and money.

Furthermore, the 911 3.2 injectors are low impedance and unique, not like the high impedance type used by all vehicles now, and very critical to proper engine operation and performance.
Porsche 911 3.2 OEM injectors are very rare, and as such difficult to replace. Using the wrong injectors have caused major headaches for some.

[creaturecat]

Loren gave me impeccable service, quick turnaround, at a more than fair price. my real world experience.

[almostordinary]

Great info. I’m just really looking to replace all six injectors. Not looking to send these originals back out for another cleaning.

[mysocal911]

Originally Posted by almostordinary

Great info. I’m just really looking to replace all six injectors. Not looking to send these originals back out for another cleaning.

Call Pelican Parts, they'll help you.

[almostordinary]

Just got a reply from the guys at RC Engineering and they let me know these injectors will work on a 3.2

Model #PL2-0250

https://www.vividracing.com/engineering-250cc-peak-hold-low-impedance-injector-p-151344016.html

I am going to give these a try and report back.

[AlBackus36]

+1 for new Lucas units.

I've been using the Lucas units available on Ebay for about 2 years in my 87 now without issue. I believe I found them in this very thread. They were $299.99 for 6 back then, and are now $349.99.

Ebay for $349
https://www.ebay.com/itm/372467329781
MFG for $507
https://www.fiveomotorsport.com/fiveomotorsport-255cc-24lbs-porsche-bmw-original-equipment/

[SergioPT]

Originally Posted by MIAdragon

I’ve been running 0280155784’s in my 84 3.2, completely stock, zero issues.

Looks like you were running High Res injectors in your car )

[SergioPT]

I have huge collection of fuel injectors And can say with 100% certainty which I personally used in 3.2L carrera

Bosch 0280150157 , 0280150201 , 0280150352 , 0280150165 I used these ones personally , tested them new out of the box side by side they are basically the same injectors as Bosch 0280150158 .
keep in mind the injectors are not manufactured to flow 100% identical . if you put 8 brand new injectors and put them through a dynamic test , especially with lower MS opening times that would correspond to a normal driving , even NEW Bosch German made injectors would be flowing within 5 % of each other. All above injectors have very similar or identical dynamic flow spec . There are also 0280150360 and 0280150364 looking at their spec even though I never tested them I can confirm they will work too. By the way the metal cap can be easily ( but carefully ) removed and a normal plastic cap fitted . But please use genuine Bosch kit , not Chinese crap . The kits can be bought from pelican . NEVER use Chinese o-rings too buy Bosch ones , they are expensive but will last 3 times .

Contact me if you need help with Genuine Bosch injectors , I can help