Rev Limiters in New Mustangs????
 

Attention Mustang Owners: At what rpm are the rev-limiters set from the factory in your stangs. For info. on Dodge's see http://dodgeramrpmlawsuit.tripod.com Found on GoTo.com search engine

i accidentally puy my car into 2nd getting on freeway and hit 7k and still didnt get RL, i guess i cant answer your ? http://www.mustangworks.com/interact...rd/redface.gif i figure on my 90 it must be around 8k??

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90 lx coupe:k@N filter, accel distrbtr, supercoil, and wires,FMS alum D/S,3chbr flows(t5)3.27 grs, cobra intake coming soon.

Who Knows: Maybe its not even there???? http://dodgeramrpmlawsuit.tripod.com

Who knows? Maybe its not even there.

on all mustang with a 5.0L the limiter is at 6250 rpm

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1989 lx with a blueprinted AOD and Pi converter headers off road h-pipe, msd6al, electric fan, underdrive pulleys, 3.73 gear, 2 chanber flowmasters, subframe connectors, K&N cone filter, Factory Five control arms, Trans cooler, 150amp alternator, 255 lph fuel pump, 50_175 hp shot
with out the nos got 1.90 60ft on pepboy tires
225 60 r15 i need slicks New B&M Hammer shifter and New ford cable and a set of pony rims

www.geocities.com/mazur50/

At 6250, but most stock tachs are way off at that range so you might see your rpms go as far as 7000 as mine does.

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92'LX Notchback, EDELBROCK Per. Intake, C&L 73mm MAM, 70mm TB,Windsor Jr iron Heads port & polished, f303 cam, 1.6 Crane roller rockers MSD 6A, Taylor 409 wires, Underdrive pulleys, JBA headers, flowtech X, 2 ch. flow, 3.73, Pro 5.0 Shifter HD FMS Radiator, Max Motorsport subs, Max Motorsport Lower Control Arms, ...KN 13.59@101.6mph
60ft/1.856
ET Drags

Are the tachs. all electronic, and not really mechanically attached to any rotating part of the engine??

On my 88GT my pedal got stuck to the floor and my RPM's went to 7K.

tachs are electronic. they work off of a signal from the coil. How often it fires, it translates to engine rpm.

I see.

Anybody else ever discover the RPM limiter in their useful powerband????

not trying to talk modular in here but i had a '96 gt with a vortech s-trim on it and my rev limiter would shut things down right on 6 grand. to get good times i had to learn to start my shift at 5800 when the motor felt like it was really beginning to pull. my 95 cobra pulls right to the 6200 rev limiter though.

My 2000 GT rev limiter cuts in at 6250. I know the 4.6 is good for alot more though, as Sean Hyland proved. No rev limiter on my 65 stang with the 289 though, DUH http://www.mustangworks.com/interact...d/rolleyes.gif
I friend of mine was trying to help me work on the 289 and I told him to start her up and give it alittle gas. Well the dumba$$ thought hed be funny and rev the engine a little. He floored the gas and started it up. I heard the engine scream to life and dove http://www.mustangworks.com/interact...gboard/eek.gif away for my life. After he let off the gas it shutdown (Huge vacuum leak), and asked me "When the needle on this thing gets to 7, is that bad." while pointing to my tach. He said it went the whole way up to 7000 rpm. Well, I know I at least built it right. Didnt think it would take a 7000 rpm blast though.

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64 1/2 Red Mustang Coupe. 289, C4, 3:1 rear gear. Mallory duel point. Ported & Polished 65 heads shaved .01 with 351 windsor valves, high side of 10.5:1 comp, 1.7:1 sled rockers, blue wolverine lumpy cam, autolite 4100 Hipo 4 barrel. And to many others to list

2000 Perf Red Mustang GT. 5spd.

64 1/2 red 6cyl coupe. Auto. project car.

Hey Mercury: When your out on the road shifting through the gears at what rpm do you start losing power and have to shift in that old 289????

Thanks for the information

See http://dodgeramrpmlawsuit.tripod.com to view the misrepresentations

I hate blatant BS. That's what that graph illustrates.

If Dodge released it they need to be sued, but I can't imagine a more inaccurate dyno run.

Look at the curves.

Torque at 1000rpm appears to be at around 400lb/ft according to the graph (hard to read because of fat *** lines). If that was the case, the truck would have about 76hp at that point, not the 220hp indicated. I also cannot believe they would start the run at around 500rpm http://www.mustangworks.com/interact...d/confused.gif Again at 2000rpm based on the crappy fat torque line, the motor would be making 445lb/ft which would mean 170hp, not 260 like shown. At 3000 it would be close to on, at 4000 again pretty accurate about 10hp low according to torque, but then the 5000 it's off by more than 100hp! With 400lb/ft at 5000, it would make 380hp, not 260.

That dyno graph is so misleading it's beyond reason that a major manufacturer could use it, and I'm smelling something stinky.

Unit 5302: Good observation http://dodgeramrpmlawsuit.tripod.com

Does everyone know that you can extend the stock rev limiter that shuts off the fuel pump at 6250 to 6450 by wiring the fuel pump to a switched 12 volts?

The injectors are cut off at 6450.

The relay for the fuel pump is under the driver seat.


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James Cox
nochevy@hotmail.com
1991 Mustang LX
12.565 @109.38mph 1.764 60ft

90dpscoupe, the limiter only works when the engine is using its own power to rev too high. Rev limiters cut out spark or fuel, neither of which was needed when the cars momentum is turning the engine. If you get going 90mph and shift into 1st gear, cutting spark or fuel out is not going to stop the engine from being turned at the rpms needed to go that speed in 1st gear.

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67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Carter 750 CFM, Comp. Cam 477/510 219/233@.050, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

My 351W Fastback