Alternative Fuel Injectors

[SergioPT]

Originally Posted by mysocal911

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.

Absolutely Correct !!

[SergioPT]

The biggest problem with old 30+ years injectors are the internal seals . If the upper seal , which sits on top of a coil once compromised will let the fuel throu where the plastic top meets the metal lower body , it will basically leak in your engine bay , so a fire hazard really .

[scarceller]

If you are going to try any sort of non-stock injector in the 3.2 engine you really need a good quality WideBandO2 gauge to check AirFuelRatio under 3 important conditions:

Fully warm engine, with stock O2 sensor unplugged.
Idle AFR should be 13.8 to 14.4
4th gear 3000RPM on level road should be 14.4 to 14.8 AFR
At WOT you need to be below 13.0AFR at all times, stock chip runs in the 11.5 to 12.5 range.

If you just drop in any injector and do not verify AFR numbers you run the risk of running lean.

[wazzz]

Regarding replacement injectors, a fellow member on the French 911 forum where I also hang around has recently bought brand new "Porsche" injectors for his Carrera 3.2. They are directly sold by Porsche in Europe at the Porsche price of more than 350 euros each and have the following part numbers:

Porsche P/N - 930 606 120 01
Bosch P/N - 0 280 158 4BT followed by 0 280B00 1KP - 00
Made in Germany
Date 22-07-24
Body is plastic and no longer metal.

[SpyderMike]

Scarceller, do you still package kits? I reached out to you months ago but got no reply.