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1000cc injectors? Can these be drivable?
Posted: Wed Nov 30, 2005 9:14 pm
by olsonjus
I'm running a big turbo setup that requires me to run 1000cc injectors per cylinder. How driveable will my car be with these injectors. I was going to do 2 sets of injectors, but I really dont have the room to fit it all.
Will I be able to drive my car every day with such large injectors on ms2 with its flyback board? I dont want to hate my car because it stalls and runs pig rich at idle all the time.
Regards.
Justin
Posted: Thu Dec 01, 2005 4:19 am
by whittlebeast
They will be fine as long as its a 4 liter motor. We need a little more info like displsacment, boost, HP, min and max RPM, ms2 or Extra, is staged injection an option, will it ever have to pass a polution inspection.....
My two cylinder 800cc motor has a pair of 800s and it idles fine....... Oh did i forget to point out that its a two stroke that idles at 3000 rpm and doesn't start making any power till 6000 RPM and has to run MAF to find the power band hit. Thats my point
AW
Posted: Thu Dec 01, 2005 9:59 am
by efahl
whittlebeast wrote:They will be fine as long as its a 4 liter motor. We need a little more info like displsacment, boost, HP, min and max RPM, ms2 or Extra, is staged injection an option, will it ever have to pass a polution inspection.....
I'll guess and see how close I can get:
1) 2222 cc, 5 cyl, 5x1000 cc injectors
2) 30 psig boost
3) 650 hp
4) Idle = 850 rpm, redline = 7500 rpm
5) MS-II
6) No inspections
Close?
Posted: Thu Dec 01, 2005 10:24 am
by olsonjus
efahl wrote:whittlebeast wrote:They will be fine as long as its a 4 liter motor. We need a little more info like displsacment, boost, HP, min and max RPM, ms2 or Extra, is staged injection an option, will it ever have to pass a polution inspection.....
I'll guess and see how close I can get:
1) 2222 cc, 5 cyl, 5x1000 cc injectors
2) 30 psig boost
3) 650 hp
4) Idle = 850 rpm, redline = 7500 rpm
5) MS-II
6) No inspections
Close?
1)2365cc, 5cyl, 5*1000cc injectors
2)35-40psig boost
3)750 hp
4) Idle =850(this would be great), Redline = 8000+ rpm
5) MS-II
6) No inspection
Posted: Thu Dec 01, 2005 10:54 am
by whittlebeast
Eric
Impressive guess..but I think you cheated
AW
Posted: Thu Dec 01, 2005 4:24 pm
by whittlebeast
I am getting a pw of about 1.7 sec at a 1300 idle. This would be a slight inconvinence considdering the ride the a quatro could deliver. With ms2 it should work. The reqfuel ends up at 2.9 (I happen to run a reqfuel of 3.8 on the ski). Per RC Engineering, I am not even shure that 5 1000s are even big enough. I would rather deal with a bad idle than run out on top. I assume you know all about rising pressure fuel pressure regulators. I would try it
Posted: Thu Dec 01, 2005 4:31 pm
by jsmcortina
MS2 has the pulse width resolution to be happy with 1.7ms at idle.
MS1 base code or MS1/Extra do not offer enough resolution to idle well with such a low pulsewidth.
James
Posted: Thu Dec 01, 2005 8:37 pm
by olsonjus
People get 1600cc injectors to idle with the AEM injector driver box. Would one of these be of any use for me when using MS2??
http://store.summitracing.com/default.a ... 115+400407
Posted: Thu Dec 01, 2005 11:02 pm
by MegaDave
Whats the idle speed that these people have with 1600cc injectors?
This might be a better link to the injector driver box from AEM that olsonjus mentioned:
http://store.summitracing.com/default.a ... toview=sku
Posted: Fri Dec 02, 2005 8:23 am
by olsonjus
Yeah, thats what I was trying to link to. People with supras are idling 1600cc injectors at 1100 rpm. 13:1 A/F ratio.
"My car has 1600cc's, idles at 1100rpm, 13.0 a/f. No injector driver and I have enough fuel with three Walbro's and the 1600's for over 1300rwhp with ease.
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Quote:
Originally Posted by WOTM
My car has 1600cc's, idles at 1100rpm, 13.0 a/f. No injector driver and I have enough fuel with three Walbro's and the 1600's for over 1300rwhp with ease.
Same here but if you drive your supra around town in stop and go traffic you will kill the plugs very quickly with the 1600's... I installed the AEM injector driver and haven't had this problem and can idle at 14.7-15.0 A/F with no problems at 1100rpm.
http://www.supraforums.com/forum/showth ... driver+box