injector size question
08-01-2011, 11:56 PM
#1
injector size question i bought my motor used with a pcm already tuned for the motor. iv been told it had 42# injectors on it but when i view the tables, it says 43.9#. how big of a difference will this make? are advertized sizes actually a little off? should i find someone that can flow these for me and get an accurate number?
when i got it, the motor had an adjustable fpr on it. i immediately took it off and put a stock one on.
when i got it, the motor had an adjustable fpr on it. i immediately took it off and put a stock one on.
08-02-2011, 06:48 AM
#2
i bought my motor used with a pcm already tuned for the motor. iv been told it had 42# injectors on it but when i view the tables, it says 43.9#. how big of a difference will this make? are advertized sizes actually a little off? should i find someone that can flow these for me and get an accurate number?
when i got it, the motor had an adjustable fpr on it. i immediately took it off and put a stock one on.
when i got it, the motor had an adjustable fpr on it. i immediately took it off and put a stock one on.
Are they SVO injectors? If so SVO's are rated at a lower PSI from ford (36 - 2 bar) and have to be adjusted to our higher PSI (43.5 - 3 bar) in the tables to keep you from being too rich. BTW - U coming out to C&C finally? Call me.
08-02-2011, 09:14 AM
#4
Pull the number off the side and post it up or google it as you should be able to find out real quick. I have FAST 42's on mine now and they look exactly like factory Delphi's (Bosch 3 design - but have a diff. model # on the side). The injector constant was probably tweaked a bit by your tuner as some go the lazy route and change the flow rate to lean out or richen the motor without messing with the MAF or Indv Cyld trims.
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08-02-2011, 09:42 AM
#8
Mine is the exact same, and it goes away once I give it any throttle. I've gone down every road and I'm pretty sure I'm going to have to live with the split BLM's at idle as it's pretty common with large cams. I'm at 230/236 with 108LSA. As to your inj constant, with those BLM's I wouldn't mess with it as you are going to have it Dyno tuned anyway and they will likely mess with them again.
08-02-2011, 05:00 PM
#16
i talked mike at gforce into it. i had to buy my own tuning software since they got rid of lt1edit. gotta get a few things fixed before its ready for the dyno tho. my head gaskets are leaking outside the block. not in the oil tho and the plugs look fine. while the heads are off, im gettin the intake ported. should make good power when its done
08-03-2011, 07:10 AM
#17
i talked mike at gforce into it. i had to buy my own tuning software since they got rid of lt1edit. gotta get a few things fixed before its ready for the dyno tho. my head gaskets are leaking outside the block. not in the oil tho and the plugs look fine. while the heads are off, im gettin the intake ported. should make good power when its done