Notices
Evo General Discuss any generalized technical Evo related topics that may not fit into the other forums. Please do not post tech and rumor threads here.
Sponsored by: RavSpec - JDM Wheels Central

how often do you engine brake?

Thread Tools
 
Search this Thread
 
Old Oct 22, 2007 | 05:12 PM
  #61  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
I assumed its front biased.

Just like most other cars.

Which means Mitsubishi takes into account weight transfer and the increased traction at the front wheels under braking.


And lessens any argument for engine braking.

I dont believe I ever said it was bad thing (ill have to check), its just that I have never heard a valid argument for pushing the brake pedal less, and letting the engine do the rest. Other than to induce oversteer.

And I believe in my first post on the topic I agreed that downshifting, and rev matching is a very important aspect of driving a stick. And that engine braking is a topic many agree to disagree on.

I also agree that launching is probably 100 times worse.

And

Originally Posted by DSMEVOLUTION
Get it through your head it's not bad! It's the proper way to drive a manual.

Is not a valid argument for engine braking

Nor is it will help you stop on a frictionless surface
Reply
Old Oct 22, 2007 | 05:31 PM
  #62  
cfdfireman1's Avatar
Evolved Member
iTrader: (11)
 
Joined: Oct 2005
Posts: 4,165
Likes: 0
From: Chicago
sure your right, push that clutch in every time you take your foot off the gas. sure your right.
Reply
Old Oct 22, 2007 | 05:41 PM
  #63  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
Originally Posted by 72Tornado
Hmm...as I think about it, you might be right, actually. Ultimately you can only apply so much stopping power before the brakes lock up, and that is in fact due to not enough available friction between the tire and the road. I agree.
I just saw this as I was reviewing my previous posts, I'm glad I was able to explain my point so you could understand it.

Originally Posted by 72Tornado

But in any case, this thread isn't about engine braking to slow down the car faster, it's about just the technique itself, so it's not necessarily relevant either way
Maybe I don't understand, what other reason is there for engine braking other than to slow the car down?

Originally Posted by 72Tornado
The ice example isn't necessarily relevant either. There, the wheels have already broken traction and their motion is unaffected by the surface. Engine braking would still slow the rotation of the wheels but it's a separate case.
Yes as I said living in WNY I have alot of fun on slippery surfaces but it illustrates another reason not to engine brake. If engine braking hard enough to skid on a slippery surface not hard to do, there is no antilock feature to engine braking, so you can put the car into an uncontrollable situation if the wheelspeed is less than the road speed.

Im not sure what ABS would do to recover in that situation, But in a panic stopping situation it would take time and distance fot you to manually recover control, versus just using the brake in the first place.
Reply
Old Oct 22, 2007 | 05:51 PM
  #64  
my-red-rs's Avatar
Evolving Member
iTrader: (5)
 
Joined: Sep 2005
Posts: 221
Likes: 0
From: Oradell, NJ
I never engine break... it wears out the clutch faster

I never rev over 4,000rpm... it wears out the engine faster

I never boost over 17psi... it wears out the turbo faster

I never accelerate too fast... it wears out the tires faster

I never stop really fast... it wears out the breaks faster

I never go over 60mph... it uses the gas faster


Give me a break! You drive an EVO!
Reply
Old Oct 22, 2007 | 06:03 PM
  #65  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
Originally Posted by cfdfireman1
sure your right, push that clutch in every time you take your foot off the gas. sure your right.

Maybe I am dense, down shifting rev matching and engine braking. are 3 different things to me.

Maybe my definitions are off

I picture engine braking, approaching a 1st gear turn at 60 miles per hour, shifting into second and taking your foot off the gas. Matching revs or not. Or if your going too fast on the thruway and you take your foot off the gas to slow down.

If I need to go from 60 to zero NOW, sure clutch and hard brakes.

I may be guilty of engine braking and not even knowing it, because as I reread someone posted if your in gear moving and foot is off the clutch (and you aren't on the gas) your engine braking.

If I am comming up to a planned stop, I will shift (row) through the gears as I said in my first post on topic, but this is not engine braking in my definition. Thats down shifting and rev matching. But my definition might be screwed up cause there probably is there is some engine braking going on. But since I'm in a matched gear I am not relying on the engine to do any of my slowing down.

Last edited by mis4tun81; Oct 22, 2007 at 06:07 PM.
Reply
Old Oct 22, 2007 | 06:06 PM
  #66  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
Originally Posted by my-red-rs
I never engine break... it wears out the clutch faster

I never rev over 4,000rpm... it wears out the engine faster

I never boost over 17psi... it wears out the turbo faster

I never accelerate too fast... it wears out the tires faster

I never stop really fast... it wears out the breaks faster

I never go over 60mph... it uses the gas faster


Give me a break! You drive an EVO!

Broke all your rules on the drive home from work.

Except one, if you use my definition
Reply
Old Oct 22, 2007 | 06:07 PM
  #67  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
I also found a very valid reason for my definition of engine braking
Reply
Old Oct 22, 2007 | 06:10 PM
  #68  
my-red-rs's Avatar
Evolving Member
iTrader: (5)
 
Joined: Sep 2005
Posts: 221
Likes: 0
From: Oradell, NJ
Originally Posted by mis4tun81
Broke all your rules on the drive home from work.

Except one, if you use my definition


Edit: Deleted

Last edited by my-red-rs; Oct 22, 2007 at 06:14 PM.
Reply
Old Oct 22, 2007 | 06:17 PM
  #69  
DSMEVOLUTION's Avatar
Evolved Member
iTrader: (7)
 
Joined: Jan 2006
Posts: 826
Likes: 0
From: Chicago, Illinois
Your still way off. It's two different things not three. Down shifting and rev matching are the same thing. Rev matching is the proper way to downshift. How would you do it anyway else?

If your in four gear and approaching a light and you downshift to third, then second, that's engine braking even if your applying the brakes that the same time. If you don't think that's engine braking then why downshift in the first place. That's the whole point of engine braking. The car WILL slow down quicker if your not using 100% of the braking force (ie: slamming on the brakes). It also levels the car out so it doesn't nose dive putting all the weight to the fron of the car.

Test it for your self....Go out to an empty road and go 60 mph. Put the car in neutral and apply the brakes heavily but don't slam on them. Then go out and do 60mph again but downshift to a lower gear, like 3rd and apply the brakes heavily and then go into 2nd still applying the brakes heavily. Make sure that you are rev matching while doing this. In the end the car will feel much more in control when you are not in neutral.

I engine brake frequently when it there is heavy snow on the ground. If i'm approaching a sticky situation fast then I will engine brake to slow the speed of the car down without breaking traction. This will keep me in control until I reach a slower speed to lightly apply the brakes and keep from sliding and losing control. If you engine brake the wheel speed will never conflict with the road speed. Meaning it will not put you into a uncontrollable situation as if you just slammed on the brakes.


Originally Posted by mis4tun81
Maybe I am dense, down shifting rev matching and engine braking. are 3 different things to me.

Maybe my definitions are off

I picture engine braking, approaching a 1st gear turn at 60 miles per hour, shifting into second and taking your foot off the gas. Matching revs or not. Or if your going too fast on the thruway and you take your foot off the gas to slow down.

If I need to go from 60 to zero NOW, sure clutch and hard brakes.

I may be guilty of engine braking and not even knowing it, because as I reread someone posted if your in gear moving and foot is off the clutch (and you aren't on the gas) your engine braking.

If I am comming up to a planned stop, I will shift (row) through the gears as I said in my first post on topic, but this is not engine braking in my definition. Thats down shifting and rev matching. But my definition might be screwed up cause there probably is there is some engine braking going on. But since I'm in a matched gear I am not relying on the engine to do any of my slowing down.
Reply
Old Oct 22, 2007 | 06:18 PM
  #70  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
I had to work mine hard on the way home from work to see if I could get the manifold to glow. for another thread.

Unfortunatly just got the turbo glowing.

I for sure don't baby my EVO, and as I said maybe my definitions off.
Reply
Old Oct 22, 2007 | 06:32 PM
  #71  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
Originally Posted by DSMEVOLUTION
Your still way off. It's two different things not three. Down shifting and rev matching are the same thing. Rev matching is the proper way to downshift. How would you do it anyway else?

If your in four gear and approaching a light and you downshift to third, then second, that's engine braking even if your applying the brakes that the same time. If you don't think that's engine braking then why downshift in the first place. That's the whole point of engine braking. The car WILL slow down quicker if your not using 100% of the braking force (ie: slamming on the brakes). It also levels the car out so it doesn't nose dive putting all the weight to the fron of the car.

Test it for your self....Go out to an empty road and go 60 mph. Put the car in neutral and apply the brakes heavily but don't slam on them. Then go out and do 60mph again but downshift to a lower gear, like 3rd and apply the brakes heavily and then go into 2nd still applying the brakes heavily. Make sure that you are rev matching while doing this. In the end the car will feel much more in control when you are not in neutral.

I engine brake frequently when it there is heavy snow on the ground. If i'm approaching a sticky situation fast then I will engine brake to slow the speed of the car down without breaking traction. This will keep me in control until I reach a slower speed to lightly apply the brakes and keep from sliding and losing control. If you engine brake the wheel speed will never conflict with the road speed. Meaning it will not put you into a uncontrollable situation as if you just slammed on the brakes.

As I said I am beginning to accept that maybe my definition is a bit off, and by your definition I probably engine brake as I down shift while Im braking.

And one two or three different things, you most certainly can downshift without modulating the throttle to match the revs, but I fully agree "proper" downshifting can't be done without rev matching.

And ABS is to keep the car controllable in a panic stopping situation, and there is definitly enough engine braking available (by my definition) on ice to stop the wheels from matching road speed. But that goes back to tire traction. Gear selection etc. Its up to you to decide which is less controllable on ice, if you accidentially encounter either.

Last edited by mis4tun81; Oct 22, 2007 at 06:35 PM.
Reply
Old Oct 22, 2007 | 06:34 PM
  #72  
Jsherwin_Evo8's Avatar
Thread Starter
Newbie
 
Joined: Sep 2006
Posts: 52
Likes: 0
From: Zamboanga City
Originally Posted by my-red-rs
I never engine break... it wears out the clutch faster

I never rev over 4,000rpm... it wears out the engine faster

I never boost over 17psi... it wears out the turbo faster

I never accelerate too fast... it wears out the tires faster

I never stop really fast... it wears out the breaks faster

I never go over 60mph... it uses the gas faster


Give me a break! You drive an EVO!
+1 go buy a mini van if you drive like this.. your driving the Legendary Mighty EVO!
Reply
Old Oct 22, 2007 | 06:38 PM
  #73  
Jsherwin_Evo8's Avatar
Thread Starter
Newbie
 
Joined: Sep 2006
Posts: 52
Likes: 0
From: Zamboanga City
i also would like to point out that F1 drivers oftenly use the brakes in turns.. most of the time F1 drivers downshifts at turns..
Reply
Old Oct 22, 2007 | 06:38 PM
  #74  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
Originally Posted by Jsherwin_Evo8

Originally Posted by my-red-rs
I never engine break... it wears out the clutch faster

I never rev over 4,000rpm... it wears out the engine faster

I never boost over 17psi... it wears out the turbo faster

I never accelerate too fast... it wears out the tires faster

I never stop really fast... it wears out the breaks faster

I never go over 60mph... it uses the gas faster


Give me a break! You drive an EVO!

+1 go buy a mini van if you drive like this.. your driving the Legendary Mighty EVO!
Originally Posted by mis4tun81
Broke all your rules on the drive home from work.

Except one, if you use my definition
Originally Posted by mis4tun81
I had to work mine hard on the way home from work to see if I could get the manifold to glow. for another thread.

Unfortunatly just got the turbo glowing.

I for sure don't baby my EVO, and as I said maybe my definitions off.
Please try and keep up.
Reply
Old Oct 22, 2007 | 06:39 PM
  #75  
mis4tun81's Avatar
Newbie
 
Joined: Aug 2003
Posts: 95
Likes: 1
From: Western New York
Originally Posted by Jsherwin_Evo8
i also would like to point out that F1 drivers oftenly use the brakes in turns.. most of the time F1 drivers downshifts at turns..
Not quite sure what you mean?

I assume you mean they downshift as they are braking
Reply



All times are GMT -7. The time now is 07:32 AM.