Need more POWER
 

I have a 1990 mustang with a 2.3 EFI motor in it and the car has been converted into a oval track car(short track racing). My engine rule is

10. Engine:
Must be stock 4 cylinder. No larger than 2.5L (2500 CC). Must be original engine size for that year, make and model. No head work or customizing. Milling of head .030" allowed. Any head milled .031" to .040" must add
100lbs. to minimum weight. .041" to .050, must add 200 lbs to minimum weight. Max. .030” overbore. No rotary, or 16 valve engines. Camshaft must be stock lift and duration. No long duration camshafts allowed. No adjustable cam sprockets or offset keyways allowed. Pistons and head must be matched; no mixing of pistons and head to add compression. No grinding on rods or rod caps. Engine must not exceed 190psi per cylinder
(NO EXCEPTIONS).
Handicap for 12-valve engines: All cars with 3 valves per cylinder must run a weight of 0.1 lb. per
CC. EG (1500 CC must run a 150 lb. weight). All penalty weight will be located between front and rear firewalls
and be securely fastened to the car.


Is there anything i can do to the EFI to make more power

You can look at a custom dyno tune but I don't really know how much you would gain on a stock 2.3

I do not see anything about s/cing it lol

What is that

I'm assuming he means supercharging. There isn't anything in there about forced induction but if the rules are that strict I'm sure it isn't allowed.

Ya No Turbos/Ram Air or supercharging

What about gear ratios? If you go to a lower ratio that would help things out.

If you are still running an engine driven fan for the rad, swapping to an electric one will save you a few horsepower.

Im running 3.08 now in 2nd and 6400rpm going into the corner I have tryed 3.55 and 2nd gear and was hitting 6500rpm just past 1/2 way down the straight away...i would love to find a set of 3.27

No i have always run an electric fan

Is there an mods to the EFI that i can do.....bigger injectors,fuel rail,throttle body,fuel pressure reg...etc...are there any parts from a 5.0l that will fit on it

What rpm does the car run to?

Right now from the exit of the corner it starts around 3000rpm all the way to 6400rpm

poorboy, without a custom tune, bigger injectors will likely do more harm than good. Adding a little more fuel by upping the pressure (with an adjustable pressure regulator) could help, though. I assume you are running open exhaust, but are you using a manifold or header? A header may help the torque coming off the turns. If the throttle body from a 2.5 ranger is larger, that may help breathing as well.
If the Mustang still has the 7.5 rear end, I have my stock 3.31 gears around here somewhere (close enough to 3.27, me thinks). You can have them for the price of shipping, provided I can find them.
I think you may have better luck finding your answers on one of the big Ranger forums, as there are probably quite a few modified 2.3/2.5 Rangers out there.
What sort of mods are you allowed to do with the intake/exhaust?

very nice of you and some great ideas to boot. Two thumbs up

If you find the gears let me know and thanks for the info im going to check out the ranger fourms

there is no real way to turn the stock computer. You are forced to either got to a stand alone or convert to carb. Can you gasket match the intakes, and heads? Can you clean up/port the heads? Light weight flywheel/clutch set up? aluminum driveshaft? If it is a 1990 what about swapping out to a ranger cam. stock for a ranger can't remember what years and stock for a 91-93 2.3 mustang.

more great ideas, you guys are smart for sure

holy that's strict... that's why i run GT class in solosprint.

gears would help a lot, fresh rebuild with new internals (OEM sizes), suspension if allowed, and some good tires :tup

I've turned this place upside down looking for those gears, and can't find 'em. I will keep looking, and let you know if I find them. FYI, all V6 mustangs from 05-10 still had the 7.5 rear and 3.31s.
johnny5 has some good ideas for you, as well. It would be nice to take a good look at the rule book... Sometimes what is NOT there can help you most.

couple of other things.
-Degree the cam, the best you can while maintaining the stock cam gear. A lot of trail and error since the timing will change a bit after turning the engine over a couple of times. so just keep adjusting until its where you want it after it settles.
-Windage tray/oil pan
-better Ignition
-knife edge the crank
-under drive pulleys
-esslinger has a light weight billet water pump
-exhaust manifold/header

you can also play with head gasket thickness and milling the head to get to the 190psi limit.
if you are going to stay efi, find/make an intake and tb set up that fits your powerband/application

you might not need to rev it that high. My 4 banger at a dyno day after some very minor work (i.e cam, cold air, exhaust) made 94rwhp at 4300rpm.

might be worth emailing esslinger or bo-port (but bo-port does more turbo stuff) and see what they can recommend.
maybe see if there is a rocker arm with a different ratio to get more lift even though it is a stock cam.

^^^pit crew chief lol

just really looked into building a a 2.3 either n/a or turbo. and might end up going that way again because of the stupid environmental people and don't think it is worth the risk of getting the stang towed. Like how do they want you to run egr, smog, pcv, and all those electrically controlled emission stuff with a carbed 331.




op some other things

"The D-shaped heads flow the best of all the different 2.3 heads, either in stock form or ported and polished. The D-port open-chamber head is best for totally stock classes in which no head modifications are allowed."

Luckily we are the last to go green and it's kicking and sreaming lol

They can and will make you break down the motor to check EVERYTHING internal. He might be able to use a few more horses, but the big thing is the car won't turn. Loses to much speed in the corners... CAR MUST BE STOCK appearing... ;) Most ranger parts are the same as the mustang. Even SVO stuff... The aluminum drive shaft idea is good, anyone got one? and the rear end is actually an 8.8.... what cars or trucks can we get 3.27-3.31 gears from... i still say he needs to run 3.55.... And yes i know alot because he's my brother....

I do believe my car has 3:31's

All '05-'09 V8 auto. Mustangs came with 3.31s, as well as most standards. 3.55 was an option on some standard ones. 4.0 Explorers (right back to the early '90s) came with an 8.8, and 3.27s were very popular in them. I still haven't found my 3.31s, but if he has an 8.8, they wouldn't work anyway... they are from a 7.5.

Yes you do

Mustang GT from 97-04 have a factory 3.27 and 07-09 GT500 have 3.31

wow I got a tech thingy right

Haha we will get you whipped into shape in no time

^^^I hope so. By the time I check out a few sites my left shoulder/lower back are screaming at me so I can't research as much as I would like. This occurs in approximately 1 1/2 hours so maybe I should not blabber so much tehehe

i have a used 3.55 out of a VERY LOW MILAGE 8.8.only about 5000klms on them.will sell for $100.00 plus shipping.i am sometimes in hamilton to pick up my daughter who lives there so i may be able to deliver.

wow great price