injectors

stevalier · Posted: Thu Jan 12, 2012 11:13 am Post subject: injectors

im looking for injectors that are about 22-24 pounds, what cars have these injectors?

SuperDave · Posted: Fri Jan 13, 2012 1:10 am Post subject:

3400 injectors are 22.5lb/hr @ 55 PSI

3.4 DOHC injectors are 24lb/hr @ 43.5 PSI

You need to pay attention to spray pattern as well though.. What do you need them for?

stevalier · Posted: Fri Jan 13, 2012 7:11 pm Post subject:

my cavi, i got high compression pistons and i keep burning them out(3.1L and 11:5:1)

SuperDave · Posted: Sat Jan 14, 2012 4:16 pm Post subject:

what makes you think that?

Static compression makes no difference on the injectors...

stevalier · Posted: Sun Jan 15, 2012 12:20 pm Post subject:

why else would my injectors go? there is no short (aleast that i can find) doesnt high compression need more fuel? if the computer think the motor needs more fuel doesnt it keep the injector on longer thus burning them out over time, if i wrong then im wrong, but everyone i talked said this would be it

91z24 · Posted: Sun Jan 15, 2012 12:53 pm Post subject:

Like Dave said, the compression is not really related. You just need to make sure you're not over 80% duty cycle on the injector pulse width. If you are, it's possible it's the cause of them burning.

SuperDave · Posted: Sun Jan 15, 2012 6:34 pm Post subject:

higher compression is not going to change the volumetric efficiency of the engine hardly at all. You are just making better use of the fuel you are getting delivered.

Are you using the stock tune?

Are the injectors just dead? Sure they aren't getting clogged or something?

your piston swap likely gained 5-10 HP and probably 15-20 TQ, along with your other mods you are well under the limits of stock gen 2 injectors. This is assuming you are using the stock cam and rockers.

stevalier · Posted: Sun Jan 15, 2012 7:46 pm Post subject:

yes stock tune tried to get wottech to chip my car some personal shit happen had to wait to get the chip, now im ready to chip it.
the inbjectors would read low ohms, its happen the last two years car would run like shit, it woud b the injectors, i would check them there would b two injectors with low ohms, stock cam and rockers.

SuperDave · Posted: Mon Jan 16, 2012 1:09 am Post subject:

probably just worn out.. lol

stevalier · Posted: Mon Jan 16, 2012 8:35 pm Post subject:

so swapping injectors wouldn't do much anyway?

SuperDave · Posted: Mon Jan 16, 2012 9:22 pm Post subject:

If you go with larger injectors without tuning for them you'll flood the engine on cold starts, your gas mileage will suffer and it's going to be pig rich at WOT.

Yes, the ECM will compensate to a certain degree but you will have problems.

stevalier · Posted: Tue Jan 17, 2012 9:50 am Post subject:

i do plan on getting it chip

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