Can it go past the stall speed?
Can it go past the stall speed?
My 1990 2+2 automatic has a 2k rpm stall speed. When i get on the brake and gas, that's as high as it gets. I've noticed on other cars, makes, models, etc. that when I do this it'll reach the stall speed for a few seconds as if in "launch" mode. Then if i don't let go, it'll go past and up to redline. Obviously smoking the tires, but this is not something I want to do to my Z, I just want to know if the same thing applies and if the Z will do it too.
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t.mcginley.jr
- Posts: 1547
- Joined: Fri Jun 01, 2012 5:50 am
- Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang - Location: New Jersey, USA
Re: Can it go past the stall speed?
If the stall speed is 2k, then that should be around when the engine overcomes the resistance of the cars weight + brakes and breaks the wheels loose. So if you hold the brakes and gas down, everything after 2k should spin the tires. It probably won't be exactly 2k even if thats what the converter is rated at because it depends on your car's weight and brake quality. Weaker brakes OR less weight OR more torque = lower stall speed
Re: Can it go past the stall speed?
Thanks for the quick response, I didn't want to go and find out in the Z lol because I just got new brakes. So from what you're saying, the resistance of my new brakes may be too much for the engine to overcome? In other words, it may sit at 2k rpm all day and not break the tires loose let alone spin the tires up near redline, or did I miss something?
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t.mcginley.jr
- Posts: 1547
- Joined: Fri Jun 01, 2012 5:50 am
- Car: 2002 Nissan Altima SE 3.5
1990 Nissan 300ZX NA 2+0
1966 Ford Mustang - Location: New Jersey, USA
Re: Can it go past the stall speed?
No I think you missed something..
If the torque converter is rated at 2k, that doesn't mean your car specifically will launch at 2k. It depends on weight, engine torque and brake strength. So say your stall speed actually was exactly 2k. If you upgrade the brakes, it just makes the stall speed higher, maybe 2,200-2,500 rpms. Stall speed is the point at which the engine torque overcomes the cars weight + brakes and breaks the wheels loose.
SO if your holding down the brakes and you floor it, it will rev up to around 2k rpms and then the tires will begin spinning (burnout). Assuming you keep holding the brakes, it WILL rev past 2k rpms but the tires will be spinning from the moment the stall speed is reached until you let go of the brakes.
If the torque converter is rated at 2k, that doesn't mean your car specifically will launch at 2k. It depends on weight, engine torque and brake strength. So say your stall speed actually was exactly 2k. If you upgrade the brakes, it just makes the stall speed higher, maybe 2,200-2,500 rpms. Stall speed is the point at which the engine torque overcomes the cars weight + brakes and breaks the wheels loose.
SO if your holding down the brakes and you floor it, it will rev up to around 2k rpms and then the tires will begin spinning (burnout). Assuming you keep holding the brakes, it WILL rev past 2k rpms but the tires will be spinning from the moment the stall speed is reached until you let go of the brakes.