If my car has peak and hold injectors is it possible to run saturated injectors in it? If so how would i set it up? Im asking because i found a good price in a set of saturated injectors and wanted yo no before i buy something i cant use.
Thanks in advance.
Originally Posted by stephensimmons
Yes, you can run saturated injectors. You need to bypass the resistor box and connect the power wire of each injector directly to switched +12V. Just make sure they really are high impedance (saturated) injectors, otherwise you will fry either the injectors or the ECU, or both.
Are you using these with a stock ECU? Even if they have the same flow rate they may not have the same opening time so the mixture might not be quite right. You really ought to have some sort of tuning control to run different injectors. Like a piggyback controller at the very least. Standalone or other chipped ECU would be better.
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yes i do have the stock computer and i just got a apexi safc. Ill probley jusj spend a little extra and get a set of peak and holds to semplify things a little.
So I'm just curious; why are you replacing your injectors? Unless you have some fairly serious mods the stock injectors have plenty of flow. You can also get an adjustable fuel pressure regulator for pretty cheap if you just need to bump up the flow a little.
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Well im going to up the compression around 11.0 port and polish the head stage 2 web cam or should i say there 2nd grind headers and exhaust and i think i have 240cc injectors so i wanted to go with 270cc injectors.
you will be fine bumping the base fuel pressure, I have pushed 200 hp on stock injectors with boost.
un-motivated!
someone make me an offer i just could not say no to.
3GR
So i shouldnt replace them?
That's up to you.
You have a better chance not blowing the motor than i did boosted.
un-motivated!
someone make me an offer i just could not say no to.
3GR
ok sorry let me get you up to speed.
stock injectors, 83mm 10.5:1 JE pistons................safc (1:1 fpr for boost)
un-motivated!
someone make me an offer i just could not say no to.
3GR
Well i guess i dont have to. Why you run such high compression if your boosted if you dont mind me asking?
torque.
enough said! lol!
un-motivated!
someone make me an offer i just could not say no to.
3GR
Yea that would definetly do it!
sorry for not answering you on PM's but i get asked that often and it's here if you look for it.
un-motivated!
someone make me an offer i just could not say no to.
3GR
Honestly i cant remember what i asked you now. I have so much suff going on in my head it takes me forever to sort it all out! im pretty sure itll come back to me though then ill find it sence ive figured the serch out on this sight.
hmm im learniing already haha sorry but taking a class about engine pro. just one ? still a lil noob here but how do you raise the compression on the motor?? cause im not sure if i wanna stay tuned up but might go with the turbo set up with 10psi
Well its cheaper to shave the head down to get it. But if your going to boost then i would give JE Pistons a call!
alright thanks.
I think if you shave like .040 thousands off you would be ether 10.0 or 11.0 compression with your stock pistons but i would have to look it up again to be sure. Any you can shave enough to get 11.0 compression just cant remember if its .040 or .080 thousands
or you can buy b18a 10.5:1 83 mm pistons + bore
un-motivated!
someone make me an offer i just could not say no to.
3GR
Thats a new one! So will the b18a pistons mount on the stock a20 rods with no problem or do you have to modify something for then to work?
b18a eagle h beams work aswell...
and no stock a20 wrist pins are smaller than the b18a's... i hate mis informing people..
In order to use the 83mm b18a pistons you need b18a rods also.
un-motivated!
someone make me an offer i just could not say no to.
3GR
So if i get the b18a pistons and rods they will drop rite into my a20 block and work with the a20 crankshaft? And my last question is do i have to notch the valve releifs any or not for the head?
Oh and thanks alot for all the imfo!
no you will need to bore the block also. 83mm
everything else is fine...
un-motivated!
someone make me an offer i just could not say no to.
3GR
Even the valve reliefs? That's really cool then. I'm not ready to rebuild my block just yet so I'll be going the extreme milling route. With the later stock A20A3 pistons, 1mm off the head gets you 10:1. 2mm off the head gets you 11:1.
10.5:1 + turbo would be awesome. Lots of care needed with the fuel and tune though. What grade fuel can you run with 10.5:1?
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