SVT_Proto Posted May 7, 2009 Report Share Posted May 7, 2009 Am i mistaken but is the FI injectors for the 87-89starquests 650cc and 950cc? Also which one is the primary and secondarys cc's? Link to comment Share on other sites More sharing options...
BMWTech Posted May 7, 2009 Report Share Posted May 7, 2009 Am i mistaken but is the FI injectors for the 87-89starquests 650cc and 950cc? Also which one is the primary and secondarys cc's? The businesses I've dealt with that flow test injectors perform the flow test at 43-44psi range, its possible this is different on newer machines but i've watched 2 different places do this in person. The primary target at this range is 600cc and the secondary is 920cc. Link to comment Share on other sites More sharing options...
Gyvven Posted May 7, 2009 Report Share Posted May 7, 2009 The businesses I've dealt with that flow test injectors perform the flow test at 43-44psi range, its possible this is different on newer machines but i've watched 2 different places do this in person. The primary target at this range is 600cc and the secondary is 920cc. I thought they were 580 and 1080. I got my info here: http://starquest.i-x.net/viewtopic.php?t=902 "...Understanding Mitsu Injectors: Letters stamped into injector 1983 thru 1986 Begin date thru 5/83 850cc Black. qty-2 MD608869 6/83 thru 1/85 850cc Black qty-2 "H" MD608909 2/85 thru 1/86 850cc Black qty-2 "J" MD614004 2/86 thru 5/86 850cc Black qty-2 "K" MD614114 1987 thru 1989 6/86 thru 89 580cc Black "L" MD614102 PRIMARY INJECTOR (fender side) 6/86 thru 89 1080cc Green "M" MD614036 SECONDARY INJECTOR (valve cover side) about $400 each..." I'm assuming these are the flow rates at stock pressure (36 psi), not some inflated pressure to skew the rates to sell crappy injectors. Link to comment Share on other sites More sharing options...
DzNutz Posted May 7, 2009 Report Share Posted May 7, 2009 Thats the info I was going to post... Link to comment Share on other sites More sharing options...
jahjah Posted May 7, 2009 Report Share Posted May 7, 2009 Am i mistaken but is the FI injectors for the 87-89starquests 650cc and 950cc? Also which one is the primary and secondarys cc's? I know who says they are those CCs.... and they are wrong. Link to comment Share on other sites More sharing options...
Starfighterpilot Posted May 7, 2009 Report Share Posted May 7, 2009 (edited) I just got my spare '88 injectors back from Witch Hunter. They Passed At 43.5 PSIG they CC'd out to: Primary L28-3 Blk = 588 CC/min Secondary M24-1 Grn = 1046 CC/min Pulsed Flow @ 2500RPM Primary L28-3 Blk = 84 CC Secondary M24-1 Grn = 145 CC But the shop manual Section 14 page 22, says that the FPR regulates output pressure, at idle, = 33.6 PSIG. Shop Manual Section 14, Page 39, says at "idle" fuel Press should be between 35 - 38 PSIG. Section 14 does not say anything about the Fuel Pressure increasing during boost. I know I read it somewhere I just can't find it. Altho, they were tested at a slightly higher pressure, and the secondary one came in slightly low, I can live with that. Cuz the ohms were sat, spray pattern "GOOD," they don't leak or weep, and they are now clean. For What It's Worth. KEN That's a little more info that was originally asked for, but I thought I would throw it out there if someone was wondering. Edited May 7, 2009 by Starfighterpilot Link to comment Share on other sites More sharing options...
Gyvven Posted May 7, 2009 Report Share Posted May 7, 2009 Slightly off topic. What would happen if I used 2 green secondaries, or even one from an 86 as primary and the standard green secondary? The ECU should be able to compensate, right? I'd just have a little more fuel available. Just wondering. Link to comment Share on other sites More sharing options...
Starfighterpilot Posted May 7, 2009 Report Share Posted May 7, 2009 (edited) Slightly off topic. What would happen if I used 2 green secondaries, or even one from an 86 as primary and the standard green secondary? The ECU should be able to compensate, right? I'd just have a little more fuel available. Just wondering. It won't work, you will be running pig rich. Remember that we are using ECU's that are relatively stupid compared to today's ECU's. Both of your scenarios have been tried many times. Do a Virtual Mechanic, Advanced Virtual Mechanic or Just BS Search. For What It's Worth. KEN Edited May 7, 2009 by Starfighterpilot Link to comment Share on other sites More sharing options...
Gyvven Posted May 7, 2009 Report Share Posted May 7, 2009 It won't work, you will be running pig rich. Remember that we are using ECU's that are relatively stupid compared to today's ECU's. Both of your scenarios have been tried many times. Do a Virtual Mechanic, Advanced Virtual Mechanic or Just BS Search. For What It's Worth. KEN Yeah, I kinda figured. I'm going to save up for a stand alone and see what I can come up with. Link to comment Share on other sites More sharing options...
Indiana Posted May 7, 2009 Report Share Posted May 7, 2009 Your car won't even idle if you have a clean secondary in place of a primary unless you have some mods to your motor that can use that fuel. I've tried a J/H for a primary and its still too rich for a stock cam. That K injector was never in a Starion, that line should noted as such, its for a Colt/Mirage. It has a tiny opening. Link to comment Share on other sites More sharing options...
SVT_Proto Posted May 7, 2009 Author Report Share Posted May 7, 2009 Ok cool good info. Now i am trying to find a set of replacement injectors as one of mine leak and here are my options: Trilogy turbos but theirs are 650cc's and 950cc's http://www.shop.trilogyturbos.com/product....amp;productId=7 Professor quests dont have cc ratings http://starquest.i-x.net/viewtopic.php?t=1...fed4be04eac5164 which ones would be better to use as im not sure if either are the stock cc rates or how they will work compared to a fresh well working pair of stockers. Any info will help guys. thanks Link to comment Share on other sites More sharing options...
vbrad511 Posted May 7, 2009 Report Share Posted May 7, 2009 Some guys are running these... http://fuelinjectorconnection.com/shop/ind...at&catId=34 A 65 and a 95, with good results. They're a little bigger diameter on top so you've gotta drill out your upper housing, and get some longer bolts, but folks seem to be happy with them. It's the route I'll be going when I need new ones. Link to comment Share on other sites More sharing options...
Indiana Posted May 7, 2009 Report Share Posted May 7, 2009 Its all about the atomization of the fuel the injector dispenses not the volume. This is why dirty stock injectors make the car run like crap its not the volume being decreased its the poor way its dispensed. There are all different types of spray patterns and amount of atomization that happens when its dispensed. The boost pressure blowing into the intake manifold demands high atomization to get an even fuel mix. If the injectors are dirty and the mix is poor then someone comes up with the WRONG conclusions that the stock intake sucks. Its their injectors being dirty is the problem. You can use many different CC injectors it will depend on your fuel pressure, your valves and your CAM. A stock cam has a duration that only needs a tiny injector to idle on. Change that cam and you may need twice the CC size of injector for the motor to even idle. Been there/done that. You can mount the injector in the throttlebody any way you wish as long as the spray pattern and atomization dispenses the fuel so it will be mixed. Its called an Injection Mixer, not a throttlebody. http://www.b2600turbo.com/images/3f37.jpg Link to comment Share on other sites More sharing options...
SVT_Proto Posted May 8, 2009 Author Report Share Posted May 8, 2009 Indiana, what injectors would you reccomend i use then? Link to comment Share on other sites More sharing options...
Indiana Posted May 8, 2009 Report Share Posted May 8, 2009 (edited) Where is the leak? Did you have it cleaned and they said it leaks internally that's the only way they would be bad or they are fried electrically. I only use stock injectors then again I have a few hundred of them to pick from. When they come back leaking for me when I hand them over to the diesel shop to clean them its usually the flatty injectors they can't "fix" but they do still work so maybe they won't spend the time required on them to clean them internally so they will work. They are under a time frame working like that so they aren't going to spend hours on one injector. www.witchhunter.com There are some on ebay right now. What's the price of replacemnts? I can have OEM injectors cleaned many times over many years and they have lasted over 20 already. If the orings were going to harden up and not work they would have did it by now. Yours cracked on the plastic? Even if they are cracked they may still not leak. Edited May 8, 2009 by Indiana Link to comment Share on other sites More sharing options...
SVT_Proto Posted May 8, 2009 Author Report Share Posted May 8, 2009 Yea i sent them in to be cleaned to trilogy turbos and i guess my secondary is leaking from the pinctle. its like 220 for a set of new injectors. I just wan my car to start running smoothly again Link to comment Share on other sites More sharing options...
dstar88 Posted May 9, 2009 Report Share Posted May 9, 2009 was the one that i gave you the primary?? did that one turn out ok at least...i hope?? i got my fuel injectors from FIC.. but yea..they are pretty expensive.. i had a secondary but i gave it to Mike (408quest) because he was saying he had injector problems..but i think it was the injector clips that were bad..so maybe if his car is running good now ill see if i can get the secondary from him so you can try it on your car. Daniel Link to comment Share on other sites More sharing options...
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