4.57 Gears puts stress on....
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From: Northern Virginia
If somone gets 4.77's on a otherwise stock ap1, will something eventually break if it is daily driven and gets a few 6k rpm launches ? What are some tips for people with 4.77's on a otherwise stock S
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From: The Netherlands
Originally Posted by FMINUS,Aug 21 2006, 02:36 AM
What do the gears put extra stress on?
The strain on the engine may be less because a lighter load is being applied.
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From: Lewisville, TX
[QUOTE=Chazmo,Aug 20 2006, 11:08 PM] Yes, I think that's true.
However, to be clear, the vehicle speed sensor (VSS) does feed into the ECU in addition to the gauge cluster's speedometer, Skip.
However, to be clear, the vehicle speed sensor (VSS) does feed into the ECU in addition to the gauge cluster's speedometer, Skip.
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From: The Colony, TX
Originally Posted by morbid,Aug 21 2006, 02:28 AM
If somone gets 4.77's on a otherwise stock ap1, will something eventually break if it is daily driven and gets a few 6k rpm launches ? What are some tips for people with 4.77's on a otherwise stock S
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From: Central Massachusetts
Originally Posted by FF2Skip,Aug 21 2006, 08:11 AM
I'm no expert, and you have stated your point(or the facts) clearly. That being said, speed is nothing more than a result of all other factors. Since we do not have traction control, I do not see how speed itself can throw off the ecu.
By the way, hi!! Hope all's going well with you, Skip.
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From: Lewisville, TX
Originally Posted by Chazmo,Aug 21 2006, 09:51 AM
I can't think of anything either. I suspect there is some data logging going on in the ECU with regard to speed, but I don't know if any calculations are made based on the speed data.
By the way, hi!! Hope all's going well with you, Skip.
By the way, hi!! Hope all's going well with you, Skip.
I really wish I had been able to make y'alls meet. Heard it was very good from folks that have been to a bazillion meets. 
I'm assuming(uh-oh!) that the logging info would be gear and rpm since speed variances can be derived from taller/shorter tires, purposeful miscalibration at the plant, etc. without ever changing gearing.
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From: Ohio
Originally Posted by mbvt,Aug 21 2006, 02:38 AM
I think on everything upstream too? Because in most situations you're using more revs, e.g. with highway driving at the same speed you're making more revs than before.
The strain on the engine may be less because a lighter load is being applied.
The strain on the engine may be less because a lighter load is being applied.
I like to think of this in terms of riding a 12 speed bike. When you use a lower gear for your advantage you take less strain off your body muscles to pedal the pedals around to get moving, at the sacrafice of more reps in revolving the pedals around more times. This makes it easier for the body (analogous to the engine) because we take less stress on ourselves to push the pedals, you can apply less power doing so when in the lower gear because of the gearing thus resulting in less strain on the body. Although what you gain from less strain, you lose in the amount of work involved in the pedalling efforts (more gas). So shift accordingly.
I like to treat the car the way I would if I saw it this way. Rev it up accordingly. It's capable of high reving so I wouldn't want to lug it around in low rpms because I think it puts more stress on the engine to do so, it might get a leg cramp if you do.
And actually I had a bad experience to my engine which I think resulted from changing away from my driving habit because others suggested that I should and lugged it around instead of driving the way I used to, which damaged the engine.
About the warranty...
I've told my dealership about my gears, and they have not mentioned any voided warranties for having them.
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From: Miami, FL
Originally Posted by S2KBreaker,Aug 21 2006, 09:18 AM
About the stress...
I like to think of this in terms of riding a 12 speed bike. When you use a lower gear for your advantage you take less strain off your body muscles to pedal the pedals around to get moving, at the sacrafice of more reps in revolving the pedals around more times. This makes it easier for the body (analogous to the engine) because we take less stress on ourselves to push the pedals, you can apply less power doing so when in the lower gear because of the gearing thus resulting in less strain on the body. Although what you gain from less strain, you lose in the amount of work involved in the pedalling efforts (more gas). So shift accordingly.
I like to treat the car the way I would if I saw it this way. Rev it up accordingly. It's capable of high reving so I wouldn't want to lug it around in low rpms because I think it puts more stress on the engine to do so, it might get a leg cramp if you do.
And actually I had a bad experience to my engine which I think resulted from changing away from my driving habit because others suggested that I should and lugged it around instead of driving the way I used to, which damaged the engine.
About the warranty...
I've told my dealership about my gears, and they have not mentioned any voided warranties for having them.
I like to think of this in terms of riding a 12 speed bike. When you use a lower gear for your advantage you take less strain off your body muscles to pedal the pedals around to get moving, at the sacrafice of more reps in revolving the pedals around more times. This makes it easier for the body (analogous to the engine) because we take less stress on ourselves to push the pedals, you can apply less power doing so when in the lower gear because of the gearing thus resulting in less strain on the body. Although what you gain from less strain, you lose in the amount of work involved in the pedalling efforts (more gas). So shift accordingly.
I like to treat the car the way I would if I saw it this way. Rev it up accordingly. It's capable of high reving so I wouldn't want to lug it around in low rpms because I think it puts more stress on the engine to do so, it might get a leg cramp if you do.
And actually I had a bad experience to my engine which I think resulted from changing away from my driving habit because others suggested that I should and lugged it around instead of driving the way I used to, which damaged the engine.
About the warranty...
I've told my dealership about my gears, and they have not mentioned any voided warranties for having them.
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From: Flintstone GA
Originally Posted by SpitfireS,Aug 21 2006, 03:41 AM
IMO everything downstream from the gears:
Bearing caps & botls (Comptech Reinforced
)
Torsen diff.
Output shafts.
CV's.
Wheels & tires.
Bearing caps & botls (Comptech Reinforced
)Torsen diff.
Output shafts.
CV's.
Wheels & tires.
The only difference is the engine and prop shaft are turning more RPMs to achieve the same ground speed.
Somebody care to elaborate?
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From: Ohio
Originally Posted by Jsmply,Aug 21 2006, 07:21 AM
Out of curiousity, can you elaborate on the engine damage?
https://www.s2ki.com/forums/index.php?showtopic=395375
I tried what some others suggested, changed my driving habit. I changed from a spirited happy safe reving in the apporpriate range, to using six gear earlier than needed in experiementing to save gas...I believe causing more stress to the engine by lugging it as it climbs from low rpms on a hot day that I beleive is what caused the damaged. Lugging the car in a higher gear too soon, the inapporpriate gear, just to save gas I think is bad on the car. I sense it puts more stress to your engine. I'm not acurate as to this is the cause, but it's an observation of what happened prior to the damages.