injectors

wishIhada5.0 · February 3rd, 2009, 12:33 AM

will 36# injectors be enough with a kb 2.1 at 9psi and cams? (provided I have the pump (SVT Focus or GT) etc. to back them up)

B0B · February 3rd, 2009, 01:45 AM

they would probably reach at least 90% duty cycle, those injectors are good to around 430 horsepower.. crank. i'd go ahead and get the 42's man, your injectors will be the weakest link if you go with the 36's.

moosenuk17 · February 3rd, 2009, 02:45 AM

^^+1, the kit comes with 36#ers but if cammed that is more are and needs more fuel i would think, get the 42s

DickH · February 3rd, 2009, 04:16 AM

just go with 42, can't hurt you.

bottlefed02gt · February 3rd, 2009, 09:30 PM

I don't think the 36 lbers will be enough.

Trick Tuners · February 3rd, 2009, 09:56 PM

you will be fine. If they are from KB they are probably actually 38#.

B0B · February 3rd, 2009, 09:59 PM

Originally Posted by Trick Tuners

you will be fine. If they are from KB they are probably actually 38#.

what if he wants to expand and put a smaller pulley on it?

Trick Tuners · February 3rd, 2009, 10:23 PM

Originally Posted by B0B

what if he wants to expand and put a smaller pulley on it?

Then he should probably build the motor first.... and if you build the motor, you would need a bigger blower! I'm pretty sure KB hit 500 with those injectors in their tests. You can bump the FP to get a little more room if needed, but if you already have some 38s, its hard to justify spending 200+ for new injectors. If you don't have them already might as well go with 60s. They cost about the same and work just fine.

February 3rd, 2009, 12:33 AM	#1
wishIhada5.0 MM Fanatic 2002 GT, True Blue, Stick Join Date: Feb 2008 Location: About an hour east of Pittsburgh Posts: 3,413 iTrader: 0 reviews	injectors will 36# injectors be enough with a kb 2.1 at 9psi and cams? (provided I have the pump (SVT Focus or GT) etc. to back them up) __________________ True blue crew founder/member #1 378/442 rwhp/rwtqon a Mustang dyno looking for block busting power...cms stage 3 blower cams on the horizon..[/

February 3rd, 2009, 01:45 AM	#2
B0B Boost gets you laid 2001 Mustang GT 12.93@113.7 (on the 18's) Join Date: Dec 2006 Location: Milton, WA Posts: 2,601 iTrader: 2 reviews	they would probably reach at least 90% duty cycle, those injectors are good to around 430 horsepower.. crank. i'd go ahead and get the 42's man, your injectors will be the weakest link if you go with the 36's. __________________ '01 GT. Just a couple Bolt-ons. 0rwhp 0rwtq. Epic Turbo build in progress 2003 Rubicon (wheelin rig) 2008 Silverado 4x4 (towin rig/road queen) 2009 KTM 450 XC-W (Brap Brap!)

February 3rd, 2009, 02:45 AM	#3
moosenuk17 MM Fanatic 2000 ford mustang GT Join Date: Apr 2008 Location: san diego CA Posts: 4,014 iTrader: 0 reviews	^^+1, the kit comes with 36#ers but if cammed that is more are and needs more fuel i would think, get the 42s __________________ 2000 kenne bell GT (440HP-432TQ) Tuned by Joe at http://www.tricktuners.com dyno vid:http://youtu.be/lr3xpxw2_v8 2011 escape MUSTANG TAT CREW

February 3rd, 2009, 04:16 AM	#4
DickH MM Fanatic 2003 gt 5.4 32v on the way Join Date: May 2007 Location: Omaha Posts: 3,946 iTrader: 2 reviews	just go with 42, can't hurt you. __________________ Before asking a gearing related question click THIS link and enjoy all your saved time. Click here for your tuning needs My slow paced budget 5.4 dohc build

February 3rd, 2009, 09:56 PM	#6
Trick Tuners MM Fanatic KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 4,471 iTrader: 3 reviews	you will be fine. If they are from KB they are probably actually 38#. __________________ Check out my forums for stuff on troubleshooting, tuning, etc We teamed up with Socal Performance Racing to bring dyno tuning to San Diego. Be friends with us on FB

February 3rd, 2009, 09:30 PM	#5
bottlefed02gt Regular Join Date: Feb 2008 Posts: 152 iTrader: 0 reviews	I don't think the 36 lbers will be enough.

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