703 injector
CF Veteran
Joined: Feb 2010
Posts: 12,367
Likes: 23
From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Go to the auto recycler in your area with some tools and pull them out of a few doner Neons, it's up to you if you actually pay for them or not.
Seasoned Member
Joined: Jun 2010
Posts: 448
Likes: 0
From: Charleston, SC
Year: 1990 - 2000
Model: Cherokee
Engine: 4.0
I may have 12 that I would be willing to sell. I just picked up 3 sets of 4 @ the local junkyard and in the process of flushing and flow testing them. I have some concerns that the flow rate of these injectors is too much more than the flow of the stock injectors to help with my gas mileage. I can see the better spray atomization when comparing the two, but going from 20.5 lb/hr (2 stock tested at Room temp, 14 V @ injector, 100% DC, calibration fluid) to 24.5 lb/hr (12 tested, same conditions) for the ...703 injectors seems like a huge adjustment for my OBD1 Cherokee to make.
I would like to hear from anyone who has made the swap and has real data to backup their findings to discuss how this pans out in the ECU/engine.
For specifics on the data or future sale, please PM me.
Thanks, David
I would like to hear from anyone who has made the swap and has real data to backup their findings to discuss how this pans out in the ECU/engine.
For specifics on the data or future sale, please PM me.
Thanks, David
Seasoned Member
Joined: Jun 2010
Posts: 448
Likes: 0
From: Charleston, SC
Year: 1990 - 2000
Model: Cherokee
Engine: 4.0
I forgot to mention that the test were run at 3.00 bar fuel pressure (~43.5 psi).
Does anyone know an inexpensive and an accurate way to lower the fuel pressure 20%?
Thanks
Does anyone know an inexpensive and an accurate way to lower the fuel pressure 20%?
Thanks
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