08-10 SS Turbocharged General Discussion Discuss the 2008 - 2009 Chevy Cobalt SS Turbocharged. On sale since the second quarter of 2008.

Accidentally floored it in 5th. Bad?

Old May 23, 2011 | 10:08 PM
  #26  
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Originally Posted by krispy
yea, its not good for your clutch at all

its like spinning your hand on sand paper thats on a table top versus spinning your hand on sandpaper thats glued to the same table top....you will wear your skin off if you apply a lot of force in the latter case, in the earlier it will just spin the sand paper
What the hell are you talking about? I wasn't aware your clutch changed friction materials when you shift into 5th

Your transmission will synchronise to the correct speeds before you shift into 5th, and with such low torque it would probably be the least damage on your clutch... Since that's what causes force... torque.
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Old May 23, 2011 | 10:11 PM
  #27  
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Originally Posted by denlou
What the hell are you talking about? I wasn't aware your clutch changed friction materials when you shift into 5th
I'm saying you are applying the same torque against a much harder to turn object. If the friction surface slips it's going to wear much faster. The hand versus sand paper analogy is usually a pretty easy to imagine one.
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Old May 23, 2011 | 10:23 PM
  #28  
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Your clutch must slip like crazy when your just idling around the parking lot then...
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Old May 24, 2011 | 06:01 AM
  #29  
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Originally Posted by krispy
yea, its not good for your clutch at all

its like spinning your hand on sand paper thats on a table top versus spinning your hand on sandpaper thats glued to the same table top....you will wear your skin off if you apply a lot of force in the latter case, in the earlier it will just spin the sand paper
ohh i know u dont need to tell me lol
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Old May 24, 2011 | 07:33 AM
  #30  
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Originally Posted by ronn
It's not bad..that's bull ****. ya just don't want to do it under load at lower RPMS (below say 2500) for an extended period of time.
If I do floor it at 3000rpms-3500rpms in 5th gear, my needle shoots all the way to redline and holds there for a second and drops back down as the clutch gets traction. I've been to the track twice with the car in the 2 years ive owned it and I never abused the car. It makes 300whp and 327trq. Tires are not spinning either. The times I ran were on the stock tune.

Dont floor it in 5th. it definately puts more stress on the drivetrain then necessary, especially since your not really doing yourself any favors doing it. It doesnt make the car fast, lol.
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Old May 24, 2011 | 07:35 AM
  #31  
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Originally Posted by krispy
yea, its not good for your clutch at all

its like spinning your hand on sand paper thats on a table top versus spinning your hand on sandpaper thats glued to the same table top....you will wear your skin off if you apply a lot of force in the latter case, in the earlier it will just spin the sand paper
sounds like you clutch will eventually start bleeding if you floor it in 5th
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Old May 24, 2011 | 02:13 PM
  #32  
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Thanks for all of the input guys. Looks like i started a few arguments lol but some interesting point of views for sure. I can understand why it would definitely not be a good thing to do, but like some people mentioned, on these newer cars its probably not as easy to damage them as we think. You would probably have to really abuse the car before you started to damage anything.
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Old May 24, 2011 | 02:16 PM
  #33  
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Originally Posted by DiabeticKripple
lol thats about when i do it. going about 90 kms and gotta pass someone, to lazy to downshift so i just floor it
lmfao
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Old May 24, 2011 | 02:27 PM
  #34  
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Originally Posted by 09CobaltSS1
it's hardly bs, but preach on brotha ronn..

Seriously though, WOT at anything under 4,000rpm in 5th gear is just asking for trouble. Once or twice by accident for a very short time, not so big of a deal. Make a habbit of being lazy and getting deep into boost that low in the rpm range with that much load on the engine (ESPECIALLY tuned).. absolute
You didn't read my post did ya? I said as long as it's not for an EXTENDED period and over 2500 RPM! GEEZUZ H KRIST...I've done this numerous times...above 2500 RPM for short bursts..and ya know what?>>>>>I still have a motor and original clutch!!!
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Old May 24, 2011 | 03:16 PM
  #35  
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Originally Posted by Drichard
You would probably have to really abuse the car before you started to damage anything.
A tune has the potential to do it. You have significantly more power than stock.
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Old May 24, 2011 | 07:06 PM
  #36  
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I'm thinking the same people that think low torque will slip a clutch but high torque won't are the same people that believe in rapture...

The topics might be completely different, but they both are based on blind faith from something somebody said was true without and scientific nature with convoluted explanations that confuse the lame-men...
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Old May 24, 2011 | 07:58 PM
  #37  
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Originally Posted by denlou
What the hell are you talking about? I wasn't aware your clutch changed friction materials when you shift into 5th

Your transmission will synchronise to the correct speeds before you shift into 5th, and with such low torque it would probably be the least damage on your clutch... Since that's what causes force... torque.
Clutch is more likeley to slip UNDER LOAD...like flooring in 5th at low rpms. As someone else pointed out..the clutch has less *leverage* in turning the motor under these conditions. That's why slip will rear it head in 4th and or 5th at lower rpms.

Read this:

clutch diagnostics maintenance repair

When a clutch starts to slip, the slippage will be most noticeable when the engine is under load, as when lugging at low speed in a high gear, when driving up a hill, when accelerating to pass another vehicle or when towing a trailer. The more the clutch slips, the hotter it gets and the more it wears. This accelerates the problem even more and may result in additional damage to the flywheel and pressure plate
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Old May 24, 2011 | 08:39 PM
  #38  
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The clutch isn't going to slip flooring it in 5th at low rpms because it's not under load, since the engine isn't loading the clutch because it's not generating much torque.

The engine is under load yes.

Fuckit, while you're worrying about your clutch go top up your blinker fluid.
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Old May 24, 2011 | 08:46 PM
  #39  
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Originally Posted by denlou
The clutch isn't going to slip flooring it in 5th at low rpms because it's not under load, since the engine isn't loading the clutch because it's not generating much torque.

The engine is under load yes.

Fuckit, while you're worrying about your clutch go top up your blinker fluid.
Umm... That's exactly when your clutch will slip - low RPM and high gear.
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Old May 24, 2011 | 08:57 PM
  #40  
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When there's little to no force exerted on it?
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Old May 24, 2011 | 09:16 PM
  #41  
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Originally Posted by denlou
When there's little to no force exerted on it?
You don't know how cars work do you?
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Old May 24, 2011 | 09:24 PM
  #42  
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Our cars build max tq around 2000rpms that's a lot of tq trying to push a car in high gear and the first thing to give is the clutch!
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Old May 24, 2011 | 09:33 PM
  #43  
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So they use the first four gears to make the car slower? They may as well just have one gear and a clutch that can handle all the massive v-tak torque...

Seriously guys?

Your engine is straining to turn the wheels of your car at low rpms and high gear, that's why this whole knock question was brought up, not the other way around lmao.

Last edited by denlou; May 24, 2011 at 09:40 PM.
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Old May 24, 2011 | 09:43 PM
  #44  
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Originally Posted by denlou
So they use the first four gears to make the car slower? They may as well just have one gear and a clutch that can handle all the massive v-tak torque...

Seriously guys?
So lets say a tuned SS tc has 350 tq and you hammer it in 5th gear at 2000rpms and hold it there.. You don't think that's bad for the clutch?? Please tell me why it isn't??
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Old May 24, 2011 | 09:53 PM
  #45  
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Alright, first of all your clutch is not going to slip in such a common condition, if that were seriously the case then GM would be in for so many warranty repairs. So there's the common sense part.

No here's the science part, ready? If you were to spin the crankshaft of your crazy 350 ft-lb torque monster up to like say 6000 rpm and dump the clutch and it theoretically actually held completely without slipping then you would generate your 350 ft-lbs of torque since at that specific point in time there are 350 lbs per square foot of force on your clutch. However, when you're already rolling and there's minimum resistance from your transmission, spinning your motor at a measly little 2000 IS NOT going to generate 350 ft-lbs of torque and is not going to slip your clutch.

When you guys come up with this crap, people that know what is going on are looking at you and asking "less torque means more slip?"
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Old May 24, 2011 | 10:03 PM
  #46  
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Originally Posted by denlou
Alright, first of all your clutch is not going to slip in such a common condition, if that were seriously the case then GM would be in for so many warranty repairs. So there's the common sense part.
The clutch would be fine in that situation in a STOCK car. OP's car isn't stock.

I think you should go test out your theory in your car. Make sure to get some video of you doing several 5th gear pulls from say 30 mph.
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Old May 24, 2011 | 10:06 PM
  #47  
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Originally Posted by denlou
Alright, first of all your clutch is not going to slip in such a common condition, if that were seriously the case then GM would be in for so many warranty repairs. So there's the common sense part.

No here's the science part, ready? If you were to spin the crankshaft of your crazy 350 ft-lb torque monster up to like say 6000 rpm and dump the clutch and it theoretically actually held completely without slipping then you would generate your 350 ft-lbs of torque since at that specific point in time there are 350 lbs per square foot of force on your clutch. However, when you're already rolling and there's minimum resistance from your transmission, spinning your motor at a measly little 2000 IS NOT going to generate 350 ft-lbs of torque and is not going to slip your clutch.

When you guys come up with this crap, people that know what is going on are looking at you and asking "less torque means more slip?"
Its called load and that makes your turbo spool.. Which creates a lot of tq at low rpms and your car is not gonna spin the tires so the clutch is the first thing to slip! I know this from first hand experiance from my car and some of my friends cars.. THE STOCK CLUTCH DOESN"T LIKE IT!
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Old May 24, 2011 | 10:11 PM
  #48  
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Originally Posted by emiller
I think you should go test out your theory in your car. Make sure to get some video of you doing several 5th gear pulls from say 30 mph.
How much footage would you like? I haven't really filmed my daily commute to and from work a lot, but I guess if I start now... Maybe in a 100 years I'll have enough proof for you?

Originally Posted by donkeyballs
Its called load and that makes your turbo spool.. Which creates a lot of tq at low rpms and your car is not gonna spin the tires so the clutch is the first thing to slip! I know this from first hand experiance from my car and some of my friends cars.. THE STOCK CLUTCH DOESN"T LIKE IT!
No, load doesn't make your turbo spool, exhaust gases make your turbo spool. Exhaust gases are generated when your engine makes a full combustion cycle in a cylinder, so the faster they generate (ie high rpms and no resistance to hinder the movement of the cylinders), the faster your turbo spools.

MAYBE IF I USE CAPITALS I CAN MAKE WORLD PEACE

ahh forget it, have fun guys.
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Old May 24, 2011 | 10:17 PM
  #49  
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Originally Posted by denlou
How much footage would you like? I haven't really filmed my daily commute to and from work a lot, but I guess if I start now... Maybe in a 100 years I'll have enough proof for you?



No, load doesn't make your turbo spool, exhaust gases make your turbo spool. Exhaust gases are generated when your engine makes a full combustion cycle in a cylinder, so the faster they generate (ie high rpms and no resistance to hinder the movement of the cylinders), the faster your turbo spools.

MAYBE IF I USE CAPITALS I CAN MAKE WORLD PEACE

ahh forget it, have fun guys.
how does brake boosting work then?
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Old May 24, 2011 | 10:19 PM
  #50  
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Exhaust gases generated by revving your motor??? duh haha
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