Like the title says........I am Changing my setup and going with bigger injectors, so mine are up for grabs.
These are brand new
Ford Racing 42# Green Top Fuel Injectors
Asking $320.00 Shipped to your door with express 2-3 Delivery and Tracking #

Thanks Keith.

 

you selling the MAF too?
might as well, because it will not be any good to you anymore seeing you are stepping up.

 

what size injectors are you going with,like what we said b4 to you 42lbs is more than enough for what you are going to run.I would think twice b4 going with a bigger injector.

 

Why? There are two guys on here that are friends of mine, one is running 50's making 525RWHP, the other is running 60's and making 534RWHP. Both cars were tuned by Diego at DaSilva and run like tops. You can ALWAYS (within reason) tune out a larger injector, so playing it safe and going bigger definitely isn't going to HURT him.

One of the above guys WAS running 42's and ran out of injector on Joe's dyno, they had to cut the run short. That happened at 520RWHP........9HP off from where Keith should be. PERSONALLY, and this is just my OPINION, but a 9HP buffer between OK and dangerously lean is cutting things a touch close. Max duty cycle is supposed to be 80% for a reason...........

 

PM sent...........

 

PM replyed

 

Injectors need too be gone regardless, after using the calculator and other peoples opinions yes I agree 42# injectors are way too small for this setup.

Ok AIRRIDE, I know your setup worked fine I will never tell you your wrong. What was the PSI you ran your Rails at? stock is 39psi!. In order for it to work fine you must of had that regulator spiked to about at least 50-60 PSI from what im guessing and hearing

See you guys made 511RWHP right? So lets do the Formula to get the Flywheel HP
511 + 10 / 0.88 = 592.0454545454545 ETC.....
= 592.05 FlyWheel HP

See I got myself second guessing after OverKill posted that calculater, it can be found here
http://www.rceng.com/technical.htm
I did the results and it told me this

Notice I used the fallowing
592.05 FlyWheel HP
8 Injectors
0.60 for a Supercharger 0.55 to 0.60
0.80 % Duty Cycle "Wear on Injectors" HINT Warning: Duty cycle should not exceed 80% for these calculations.
39 PSI Pressure in fuel rails "Factory PSI is 39"

The Injector size I need is 58.61#

From what I have found out 39 PSI "in the rails" is suppose to stay that way no matter what 39psi too Infinity wether your making 200hp too 1200hp
So it looks like im going with 60# injectors. But im keeping the MAF just need to find out the curve for it.

Thanks for all the help guys
Keith.

 

Injectors are sold
Thanks

Keith

 

the set up we had worked great with 42lbs and our fuel pressure wa set at about 45psi and it on the dyno and runnning the tweeceer RT we had no problems ,and it was not runnning to lean.but that was just our setup and it was just a suggestion as keith is buying our motor and has bought our blower alllready.because some of you might know that we had a 87 coupe b4 the 94 and we were running 50lbs injectors in that ,pretty much the same setup and that one had too much fuel when cruising with ,and after crusing with and getting on it ,it fell on its face.BUt then again just our 2 cents.