View Full Version : 4agze - larger injector upgrade?
Hi again all :)
Does anyone know offhand if it's possible to fit a set of larger injectors into a 4agze rail + manifold? I'm going to be pouring fuel into this thing like a loon, and I'm thinking a set of mk2 turbo injectors might be worth the effort if they can be made to fit :mrgreen: Would it be possible to just bore out the fittings in the rail and intake to fit the larger injectors?
Cheers again
Al
Paul Woods
06-04-2006, 07:06
alun i would have thought the stock injectors would be good for a lot more to be honest? i think all you need to do is up the duty rate with a piggy? anyone?
what about a turbo fuel rail and injectors? What size are the standard supercharger injectors? I would have thought you would be able to get larger injectors for it, without having to modify the fuel rail?
I've done some more rummaging around and it looks like the standard 4agze injectors are around 365cc/min. I wonder how close to the limit they get pushed on an overdriven SC :hmm:
I'm going to have a poke around on the weekend and see if I can borrow a 3sgte injector and see if it'll slot in. If it does, I'll fit a set anyway :hehe: The extra capacity will just be peace of mind if I can get the engine to run to a bar and a half.
Paul Woods
06-04-2006, 18:50
please remember though alun that increasing the injector size means that more fuel will be injected at idle and right through the revs as they are still operating at the same duty rate,only letting more fuel inject at each pulse....im not sure what that will do to your idle/emissions.
Piggy or standalone is always best with larger injectors so you can adjust the duty rate,throttle them down at idle and only having the extra fuel injected when you need it,up top!
I dont know whats available piggy wise though,might be worth finding out if something like a SAFC would do the trick.
Paul, I've been looking at the megasquirt for a while and it should be able to handle the extra injector sizing without a problem (fingers crossed). Knew I forgot to mention something important lol
Paul Woods
06-04-2006, 19:05
ah MS...top hole...thats the route im going to control the v8's injectors n spark....we may need to start a megasquirt thread soon.
superchargedsam
06-04-2006, 19:32
Alun if it makes it easier I have the 4AGZE about to go on the engine stand when I can work out what bolts i need to put it on said stand, if it helps to trial fit anything then let me know and pop over !
Cheers Sam :shades: Give me a shout if you want an extra set of hands getting the engine up on the stand. I've got mine on the floor of John's garage at the moment, so might be able to have a quick look saturday morning.
superchargedsam
06-04-2006, 23:04
geting on the stand is ok, finding the bolts is the issue, lost all my gearbox bolts soemewhere so need to now what bolts they are so I can get some extended ones !
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