Hitting rev limiter....

LordLo

New Member
Jun 20, 2006
242
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OR
My friend was doing a donut in his mk3 supra. We got into an argument. He was on the rev limit for 4 seconds at 7,000 rpms and I told him it would damage his engine. He said it wouldn't.... well long story short, he concluded that the rev limited was set to protect the engine.

In my personal opinion it would errode the bearings and rings... what do you guys think?
 

88supraFAST1

7M WHAT
Feb 8, 2006
421
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Battle Ground, Wa
yes the rev is safe and yes it will damage an engine the 7m stock is not ment to rev all day. bounceing off the rev is bad it make the engine surge wicth cause wrong ware patern also the car gose into safe mode when rev is hit witch if you hold it long enough you can get a check engine light. so yes the rev is safe and yes it will damage the engine along with other compants of the car. the MK3 is an old car you have to treat it right witch means not taking it to RL and doing your regularly maintain.
 

vas85

SupraNut
Sep 29, 2006
391
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Sydney, AU
If he's "SMART" of which smart is the keyword, he would feather it around 4-5000rpm... you dont need foot flat to be doing a burnotu, its not like its a 1.6litre 4cylinder... my Supra breaks traction easily at 2500-3000rpm without even being on boost so I dont know what 7000rpm would be doing LOL... shouldn't kill it.. thats what rev limiters are for, the purpose of not making the engine go bang, i'm sure engineers that designed the car woudl have also had the engine running at its rev limit for a while to inspect and analyse results for fine tuning etc... but yeah.. once its wheelspinning he should just have to feather it and keep it a nice rev range (at peak torque that is :)).
 

vas85

SupraNut
Sep 29, 2006
391
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Sydney, AU
ma71supraturbo said:
Hitting the rev limiter won't due any "damage." But running the engine at that rpm for long periods of time will obviously cause more accelerated wear than putting around at idle...

Ditto.. excellently said.
 

SupraDupra500

Member
Apr 29, 2005
195
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16
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Terre Haute, Indiana
i tend to run mine hard from time to time. since ive rebuilt the engine about 4 months ago, ive hit rev limit just 6 or 7 times. a couple of times i went wot racing random cars, and the gas pedal got stuck on the floor mat when i shifted :)oops! (no more floor mats now) and theres the rev limit on the occasional mis-shift and a couple times what i tried to drift in the rain.. <---FTL and what vas85 said about burnouts.. ive done that showing off.. i hald it at 4500 and smoked the living hell out of that parking lot :)

but i agree with the others.. no damage.. but accelerated wear :)
 

antman

Supramania Contributor
Apr 6, 2005
632
0
16
TN
In my opinion "accelerated wear" is damage. For peace of mind i stay out of the rev limiter.
 

RacerXJ220

Interdimensional
Mar 30, 2005
1,504
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Abalama
I wouldn't hit readline on a 7M unless I had to. I seldom had to.

A lot of drifters who take the 7M to redline blow the motors. Maintenence? Maybe. I know they sell their MKIII's for pieces of shit 240's, and redline the KA motors all day long, every time out to drive, and they are still going.

I am convinced without loss, that redlining the 7M is a quick way to shorten it's life, piston speeds are up there.
 

NeatOman

Never know enough!
Oct 5, 2006
233
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Addison, IL
I even did a 3ed gear burnout on my old 89n/a auto with some old ass goodyears. No need to rev high.. just shift up!