Rev limiter and blown engines?
06-22-2003, 05:32 PM
#1
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Rev limiter and blown engines?
what is the rev limiter for really? if it doesn't prevent the revs going over on a mis-down shifts...I haven't missed any shifts yet (knock on wood) but I don't go fast enough in a high enough gear that even if I did mis-shift, nothing would happen except my clutch wouldn't be too happy with me.
My question is this,
why doesn't the rev limiter prevent blown motors? and what is its function then since it doesn't?
thanks
My question is this,
why doesn't the rev limiter prevent blown motors? and what is its function then since it doesn't?
thanks
06-22-2003, 05:41 PM
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Yup,
Rev limiters are not capable of preventing a down-shift over-rev. When you put the car in gear and let off the clutch, you are physically connecting the rear wheels to the engine. The only type of device that would prevent a downshift of this type would be some sort of electronically controlled clutch intercept that wouldn't allow you to engage the clutch at certain gear / mph ratios. I don't know if *any* car has this functionality.
Over-rev's on missed down shifts are possible with ANY car that has a true manual transmission.
Benjamin
Rev limiters are not capable of preventing a down-shift over-rev. When you put the car in gear and let off the clutch, you are physically connecting the rear wheels to the engine. The only type of device that would prevent a downshift of this type would be some sort of electronically controlled clutch intercept that wouldn't allow you to engage the clutch at certain gear / mph ratios. I don't know if *any* car has this functionality.
Over-rev's on missed down shifts are possible with ANY car that has a true manual transmission.
Benjamin
06-22-2003, 05:44 PM
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and also...what's the point of the rev limiter? In the old days you could actually blow an engine by just flooring the accelerator and not shifting gears?
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06-22-2003, 05:50 PM
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and also...what's the point of the rev limiter? In the old days you could actually blow an engine by just flooring the accelerator and not shifting gears?
06-22-2003, 05:55 PM
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Originally posted by 98_1LE
I think the point is to protect the average owner from damaging their car under "normal" use of a performance car.
I think the point is to protect the average owner from damaging their car under "normal" use of a performance car.
I have hit the limiter in my T/A hundreds of times, and have never hurt anything. Of course I am not out to sabotage my car, and I know how to shift so as not to ever mis-downshift to a gear that is too low for the vehicle speed.
I've only hit my rev limiter once. It was when I tried to go into VTEC before the engine was warmed up. I will never experience the rev limiter again.