Drivetrain Transmission, LSD, Clutch, Driveline, Axles...

Downshifting

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Old 07-26-2006, 12:49 PM
  #26  
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Originally Posted by chipmonk212121
....and where are you getting these numbers from, because our cars cant go morehtan 145 stock and there is no way in hell the stage 2 will let us go 182 without our cars blowing the **** up!
Exactly as mentioned above...those are merely theoretical top speeds based on the gear ratios. There is a governor that kicks in at 158 (although it's easily removed), and the power needed to actually get to 182 would likely around 400 at the crank. (in this car, anyway)
Old 07-26-2006, 04:22 PM
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Yea!! I figured it out!!!

Sweetness - thanks for all the help on this.
Old 07-26-2006, 05:23 PM
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Originally Posted by Tomtwtwtw
Yours is very close to ours...I'm too lazy to look up the thread I posted in, and I get off work in 2 minutes, but ours are something like

37
70
100
132
169


Stage 2 is around

39
77
108
142
182

I could be off on some numbers.
Your numbers are WAY off
Old 07-26-2006, 05:24 PM
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Originally Posted by cashstacker
Your numbers are WAY off
Oh? Would you please supply the correct ones then?
Old 07-26-2006, 05:45 PM
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I was cruising at 30 once in 5th minding my business when a 3000gt flew by me. I went straight to 2nd from 5th without matching. The car just leeped and took off like a rocket. Scared the **** out of my cousin that was in the car with me.
Old 07-26-2006, 05:49 PM
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Just to fix my numbers, which are apparently WAY off...the top speeds in each gear are actually

35
67
100
133
169 - theoretical with 6450 redline

and

37
72
108
143
182 - theoretical with 7000 redline

Apologies to Cashstacker and anyone else offended by my memory lapse.
Old 07-27-2006, 03:42 AM
  #32  
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Originally Posted by Tomtwtwtw
Just to fix my numbers, which are apparently WAY off...the top speeds in each gear are actually

35
67
100
133
169 - theoretical with 6450 redline

and

37
72
108
143
182 - theoretical with 7000 redline

Apologies to Cashstacker and anyone else offended by my memory lapse.
You need to stop being such a sensitive little bitch.
Old 07-27-2006, 01:35 PM
  #33  
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Originally Posted by cashstacker
You need to stop being such a sensitive little bitch.
And you need to learn what sarcasm is.
Old 07-27-2006, 01:43 PM
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I dug out some info from a fiero forum one time, when looking for saab f40 tranny specs, and they had top speeds in each gear, with 6500 and 7000rpm redlines for a bunch of different trannys including the f35. Those look to be the same numbers they had posted as well.
Old 07-27-2006, 09:10 PM
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Originally Posted by Screamin!
I'm just too afraid to drop down to 3rd gear from 5th gear - I'm afraid like the trans will fall apart or something disastrous will happen.

I guess that when the time comes, I will figure it out.

Well i am probably not the smartest person on here when it comes to shifting seeing as i just learned two months ago but hey im pretty darn smooth :P any ways when i shift from 5th to 3rd i just clutch, slow down to about 50km and then rev it to just ovrt 2RPMS and ta da.... perfect.... well atleast I think its perfect
Old 07-27-2006, 09:10 PM
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Originally Posted by Screamin!
I'm just too afraid to drop down to 3rd gear from 5th gear - I'm afraid like the trans will fall apart or something disastrous will happen.

I guess that when the time comes, I will figure it out.

Well i am probably not the smartest person on here when it comes to shifting seeing as i just learned two months ago but hey im pretty darn smooth :P any ways when i shift from 5th to 3rd i just clutch, slow down to about 50km and then rev it to just ovrt 2RPMS and ta da.... perfect.... well atleast I think its perfect
Old 08-14-2006, 11:54 AM
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https://www.cobaltss.net/forums/general-cobalt-68/shifting-tips-28773/

Shifting 202—Rev matching and “blipping” the throttle


Smooth shifts save wear and tear. The goal is to make shifts so smooth that they won’t be felt.

If you’ve never noticed it before, try blipping (quick jab or tap) the throttle in neutral at a full stop. Jab it to the floor (quickly) and release immediately. It is striking that the revs won’t budge for a ½ second and then only go up about 1000 additional rpm. “Blipping” refers to a quick addition of some throttle, it need not, and usually is not, flooring the accelerator.

Practice the following exercise which simulates passing on the highway.

On open road (no traffic), get in 5th gear at 50 mph. Depress the clutch, move to neutral and blip (jab) the accelerator. Note that the rpms will increase by about 1000. Put the car in 4th, release the clutch, and hold 50. Repeat until you can do this smoothly with no “jerk” when the clutch is released. It will be smooth when the blip adds enough rpm to match what is required in the lower gear.

Do the same to get from 4th to 3rd (it will take higher rpms to do this smoothly). Now go 5th, to 4th, to 3rd while holding 50.

Remember the spring will return the stick to between 3rd and 4th in neutral.

Later, try going from 5th to 3rd. Because of the way the SS/SC throttle works, you may need to blip the throttle twice (or hold the blip longer) to get enough rpms.
BTW, you want to do this by sound rather than staring at the tach. Radio off. You can do the same exercise at 40mph going from 4th to 3rd to 2nd. Note that roughly 3800 rpms are required in 2nd at 40 mph. Acceleration is greatly improved at the lower gear for safer passing.
Old 08-14-2006, 11:59 AM
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Hey since we're talking about shifting, and I'm also new to the manual, I drive a ss/sc and wanted to get some pointers on my starts (i got spanked by a bmw 530i off the line sooo embarrasing). Any ideas/help?
Old 08-14-2006, 12:25 PM
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learning to rev match can be a key skill when someone wants to run on the highway... i started with my 92 civic and it became a daily thing for passing or showing those young kids that their civic isnt fast. throttle response isnt amazing in our cobalts though, my civic had fidanza 7lb lightened flywheel and act clutch that allowed really quick revs.


and like someone stated... with an exhaust, a blip of a throttle sounds good when rev matching
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