Will going to 7k hurt my engine?

OrangeMustangGt

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Mar 7, 2002

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Aug 20, 2004

#1

• Aug 20, 2004

• #1

i just missed a shift and went t0 7k. it sounded like it was detinating. very bad. however it runs fine, could i have messed anything up not apparent now? oh i have trickflow valve springs.

 

W

wytstang

Mustang Master

Mar 14, 2004

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Aug 20, 2004

#2

• Aug 20, 2004

• #2

You're probably ok just don't do it again.

 

E

EpiKk3

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Jun 4, 2004

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#3

• Aug 20, 2004

• #3

you better wash your car every day for a week to get back on good terms with her...

nah i duno.. its probably not good but bouncing it off the rev limiter wont kill ya.. just dont do it often.. or ever if possible lol

basically when you get problems then youll know

 

Joes95GT

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Jan 23, 2003

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#4

• Aug 20, 2004

• #4

It couldn't have gone to 7k. The limiter comes in at 6250. Your tach is probably off.

Joe

 

T

tjm73

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Aug 3, 2000

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#5

• Aug 20, 2004

• #5

You can't rev more than 6250 rpm with factory computer. BUT you're tach can be so inaccurate at the high end of the range that it shows 7000 rpm. That sound you heard was most likely the rev limited kicking in. 6250 rpm plus 10% is 6875. It's been documented that factory tach's can be 10-15% off at the high end of the scale.

 

5

5literstang

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#6

• Aug 20, 2004

• #6

i thought we didn't have rev limiters? lol

 

OrangeMustangGt

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#7

• Aug 20, 2004

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oh thanks now i feel much better lol, i dident even know we had a rev limiter!! ya my tach is def off, cause i was looking at it, oh whell, that is good, i bet my valve train, etc is fine, since i got heavy duty springs. cool.

 

5

5literstang

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#8

• Aug 20, 2004

• #8

and bro when u gettin that beast painted???

 

95snoozer

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Dec 14, 2002

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#9

• Aug 20, 2004

• #9

Joes95GT said:

It couldn't have gone to 7k. The limiter comes in at 6250. Your tach is probably off.

Joe

Click to expand...

some of the 94s had a 7k limiter

7k = nono on the stock cast crank and berrings.

 

Killercanary

The car that set the bar.

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#10

• Aug 20, 2004

• #10

Mine has a 7000rpm limiter FROM THE FACTORY just like Snoozer said. I have verified this with my EEC Tuner and on the dyno. I have made pulls over 6300 already... and that is WITH the STOCK AFR valve springs, not the upgraded ones.

 

OrangeMustangGt

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#11

• Aug 20, 2004

• #11

damn. now im scared. my car IS a 95 tho. oh whell, it still runs like it did, so is it fine?

 

Killercanary

The car that set the bar.

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#12

• Aug 20, 2004

• #12

Don't worry about it... if something was wrong you'd know it.

 

GTJake

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#13

• Aug 20, 2004

• #13

Just checked the T4MO bin and the rev limiter is set to 7,000 rpms. So some definitley go to that.

Jake

 

Joes95GT

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#14

• Aug 20, 2004

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Hmm, I never knew that. I guess you learn something new every day. And this is for 94 cars only?

Joe

 

GTJake

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#15

• Aug 20, 2004

• #15

It's for a T4MO bin, which 94-95 car use, so yeah, I guess. J4J1 has a 6250 limiter.

Jake

 

mstangfrk95GTS!

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#16

• Aug 20, 2004

• #16

well, rev limiter or not, the 2031 will float the valves at 6500.....



so dont do it again.
LOL

 

Killercanary

The car that set the bar.

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#17

• Aug 21, 2004

• #17

JFYI- mine is a 95 T4MO equipped car.

 

Sleepy McNastee

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#18

• Aug 21, 2004

• #18

Anyone know how you can tell which one(T4MO or J4J1) you have?

 

super302

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#19

• Aug 21, 2004

• #19

I wouldn't worry about it, just be more careful in the future.

 

GTJake

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#20

• Aug 21, 2004

• #20

Sleepy McNastee said:

Anyone know how you can tell which one(T4MO or J4J1) you have?

Click to expand...

Cobra's have J4J1 computers.

Jake