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Old 04-28-2013, 06:20 PM   #1
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Rev limiter

I saw a post on the new mustangs about this so I figured I ask about my I have a 02 gt and I was wondering 1. What's the stock rev limiter at and 2. What's the highest I can make it for best performance and still safe for my motor. I have stock mani and 3.73 gears.
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Old 04-28-2013, 08:42 PM   #2
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Anybody?? :/
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Old 04-28-2013, 11:34 PM   #3
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Originally Posted by Nitrous02gt View Post
I saw a post on the new mustangs about this so I figured I ask about my I have a 02 gt and I was wondering 1. What's the stock rev limiter at and 2. What's the highest I can make it for best performance and still safe for my motor. I have stock mani and 3.73 gears.
1. 6050 RPM

2. 6050 RPM -- cheap, safe, fast; you can only pick two...

There is no benefit to bumping the rev-limiter on a stock 2V, even the PI models. The heads are not breathing well by then, and the stock 65 mm TB and upper plenum (the plenum is the weak point) are all done by 5500 rpm...

If you want to begin to build up performance without breaking the bank (or the engine) read this thread...
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Old 04-29-2013, 12:22 AM   #4
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1. 6050 RPM

2. 6050 RPM -- cheap, safe, fast; you can only pick two...

There is no benefit to bumping the rev-limiter on a stock 2V, even the PI models. The heads are not breathing well by then, and the stock 65 mm TB and upper plenum (the plenum is the weak point) are all done by 5500 rpm...

If you want to begin to build up performance without breaking the bank (or the engine) read this thread...
I have a 78 mm tb and plenum combo with shortys o/r x pipe flow masters and hyper tech tune idk I thought a higher rev limit would help cuz it's an option on my tuner
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Old 04-29-2013, 12:31 AM   #5
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Does it matter with my mods? Idk I'm bad at this stuff lol
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Old 04-29-2013, 12:50 AM   #6
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Does it matter with my mods? Idk I'm bad at this stuff lol
Nope, in fact "safe" and raising the rev-limiter on the 2V with the stock bottom end (the rods are the weak point) do not belong in the same sentence...
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New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq
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Old 04-29-2013, 12:52 AM   #7
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Nope, in fact "safe" and raising the rev-limiter on the 2V with the stock bottom end (the rods are the weak point) do not belong in the same sentence...
Should I lower it?? Lol I have a 100 shot of nitrous and now your scaring me.
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Old 04-29-2013, 01:57 AM   #8
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Should I lower it?? Lol I have a 100 shot of nitrous and now your scaring me.
No, though I find it surprising that you would be concerned about it being "safe" to raise it--and yet be running a 100 shot of nitrous oxide, which is technically not "safe" on an engine designed to produce 260 HP at the flywheel; a "+100 shot" makes that 360 fwHP.

Now consider that when Ford's engineers designed the '03/'04 Cobra to produce 390 fwHP they decided the GT bottom end would not be "safe", and used forged components.

So can you better define your definition of "safe"?

If by "safe" you mean "this is my DD and I cannot afford to blow up the motor", then stick with an n/a bolt-on build and no power adders.

OTH if to you "safe" means "I want to have a GT that stands out in the crowd and can afford to someday rebuild/replace the motor" then keep it under 400 fwHP and you'll be OK. This will shorten the engine's useful life, however most likely not catastrophically.

For "balls and all" bring it up to 425 rwHP, run it hard 4 or 5 times, and enjoy the show when it throws a rod...

KB New-edge blows on dyno
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Steeda UDPs, Ralco flywheel, RAM HDX clutch, 3.73s, 262 rwHP/305 lb-ft.

New ride (7/1/2013) 1998 Mercedes SL500-5.0L 32V VVT 326/347 HP/tq
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Old 04-29-2013, 08:10 PM   #9
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Every now and then when I do a good burnout.. (Showing off ik bad right) I hit the rev limiter.. If I lower the rev limiter would that be a safe measure to take? I never run the strip Kristin don't have money to rebuild another motor..
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Old 04-29-2013, 08:34 PM   #10
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Every now and then when I do a good burnout.. (Showing off ik bad right) I hit the rev limiter.. If I lower the rev limiter would that be a safe measure to take? I never run the strip Kristin don't have money to rebuild another motor..
No need to--Ford set it at 6050 RPM because it was a safe limit...
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Old 04-29-2013, 09:13 PM   #11
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I'd cry if that happened to my car no lie, but then again I wouldn't boost on stock internals
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Old 04-29-2013, 11:50 PM   #12
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I'd cry if that happened to my car no lie, but then again I wouldn't boost on stock internals
U can boost stock internals. Mine was boosted 3 years 400 hp and just let loose 2 weeks ago (meth kit failed ran lean). With a good tune and stay around 380-420 hp should be safe for awhile but depends on tune.
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Old 04-30-2013, 12:51 AM   #13
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U can boost stock internals. Mine was boosted 3 years 400 hp and just let loose 2 weeks ago (meth kit failed ran lean). With a good tune and stay around 380-420 hp should be safe for awhile but depends on tune.
I know that it can be done and that people have done it but I'd rather be safe than sorry but that's just me lol I'd pay the money to have the forged internals
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Old 04-30-2013, 07:35 AM   #14
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I dunno man I love boost to much to have waited to buy forged first lol
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Old 04-30-2013, 08:49 AM   #15
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How much it cost to get forged internals? Anyone have a ball park number?
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Old 04-30-2013, 09:51 AM   #16
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How much it cost to get forged internals? Anyone have a ball park number?
I saw eagle forged internals for street and strip for $1700ish and competition for almost $2000
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Old 04-30-2013, 10:44 AM   #17
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Add another grand minimum to get someone to build it for you.
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Old 04-30-2013, 10:45 AM   #18
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Ouch
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Old 04-30-2013, 12:01 PM   #19
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Can anyone provide a good link of some good internals to use if I'm looking for 450-550 hp?? I have been looking but have no idea what I'm looking at lol
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Old 04-30-2013, 12:08 PM   #20
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How much it cost to get forged internals? Anyone have a ball park number?
I saw on MMR that they install forged pistons n rods for 1500.
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Old 04-30-2013, 12:14 PM   #21
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rev limiter is not where the highest power is made, itsjust he highest it can go wtihout messing stuff up, no need to modify it
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Old 04-30-2013, 01:17 PM   #22
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rev limiter is not where the highest power is made, itsjust he highest it can go wtihout messing stuff up, no need to modify it
+1
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Old 04-30-2013, 04:16 PM   #23
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U can run boost up to about 400 rwhp if u have a good tune on ur stock bottom end
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Old 04-30-2013, 04:28 PM   #24
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How do I get a good tune? I have a hyper tech one right now
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Old 04-30-2013, 04:53 PM   #25
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How do I get a good tune? I have a hyper tech one right now
Are you N/A?
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Old 04-30-2013, 05:14 PM   #26
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I have a 100 shot of nitrous I use for the track
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Old 04-30-2013, 06:24 PM   #27
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I have a 100 shot of nitrous I use for the track
Idk if you have to tune for nitrous but best handheld is sct from American muscle
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Old 04-30-2013, 06:44 PM   #28
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Lol sucks so expensive since I already have one but no it doesn't have a nitrous option
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Old 04-30-2013, 06:51 PM   #29
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Lol sucks so expensive since I already have one but no it doesn't have a nitrous option
Idk I the sct one does
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Old 04-30-2013, 06:53 PM   #30
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Oh I was saying my hyper tech doesn't have anything for nitrous
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Old 04-30-2013, 06:54 PM   #31
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Oh I was saying my hyper tech doesn't have anything for nitrous
You could ask the guys at AM
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Old 04-30-2013, 11:41 PM   #32
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Oh I was saying my hyper tech doesn't have anything for nitrous
Then you aren't using nitrous then? You need a custom dyno tune to run nitrous properly.
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Old 04-30-2013, 11:51 PM   #33
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Best place to get a tune is going to be a reputable tuner in ur area hell put it on the Dino and see exactly what the car is doing and make adjustments. Mail order tunes are just a bandaide
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