Using magna injectors on pajero engine?

[disco stu]

Yeah, I just figured someone might want to know what they are capable of. I'm surprised they are that much smaller than magna

[stumagoo]

Me too. Actually quite keen to try either Magna or 380 ones myself but I am likely to do that when I do the 380 transplant

[disco stu]

Being 12 hole I would think the 380 ones would be a lot better

[stumagoo]

I suspect so and as I am going to do the 380 swap and bolt the supercharger onto it I want the extra fueling if possible.
May have to use the 380 lower Plenum and get the Paj upper match ported or something else sorted

[Darkfibre]

Ok,
To resurrect an older thread. I have been going down the road of scaling injectors, and fell into the trap of internet research that told me that 3.5l magna injectors flowed the same as a 380 injector.
After spending many roadtests logging injector trims and wideband A/F ratios, I found my settings did not reflect 3.5l Magna injectors.
I was hoping that everyone reporting that the 6G74 and 380 6G75 injectors flowed the same meant I could use the Magna settings. After finding I was still rich I assumed a fault. After testing fuel pressure and AMM I went out on my way and obtained a Magna injector to compare against and compare on an injector flow bench.

Now because of the way injector test machines work, DO NOT trust the flow readings, but you CAN trust the percentage differences.
Delica 6G72 green injector 195500-3170 240cc
Pajero 6G7? red injector 193500-3970 240cc
Magna 6G74 CDH275 277cc
380 HDB305s 307cc

Context, Delica 6G72 converted to 6G75 (edit not 6G74) with modified ecu, then changed to 2002 6G72 modified ecu with knock sensor, working on optimal advance tuning now mixtures are close to optimal.

Cheers

[stumagoo]

Yes Magna peeps report very much what you have found here - As I have said before the numbers used in the ecu scaling is indicative but not an absolute flow rate - the Pajero 3.5 one is rated at 227 in the ecu but from the magna specs it should be around 260 flow rate - the 227 may be flow rate at idle fuel pressure who knows?? there is apparently enough room in the self learn facility of the NL ecu to allow for the 3.8's flow rates wityhout modding the ecu but I figure thats assuming everything else works perfectly....

Currently my stock injectors run at 10psi above stock and are scaled up from 227 to 266 in the ecu my AFR's run sweet (I have a wideband fitted) and my fuel trims (what the ecu adds or removes based on o2 feedback) is less than +-5% which according to the tuning guru's is considered acceptable

I am looking at running RX8 injectors next build as they are nominally 440cc injectors (the other option is STI at 560) both run 13ohm impedance and are physically compatible with sizes so its just a matter of tuning the latency and fuel flows in out ecu

seeing as you are in Perth --- would love to catch up some time