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  • SN95 4.6L Mustang Tech

Downshifting

  • Thread starter Thread starter Stangsgrl
  • Start date Start date Dec 8, 2004
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Stangsgrl

Member
Mar 13, 2004
132
1
18
Mesa, AZ
Dec 8, 2004
#1
  • Dec 8, 2004
  • #1
Can there be any harm in downshifting a lot. I do it pretty much everytime i break...of course i ease into the gear and all, just i don't like using my breaks all the time. i'd rather just take my time slowing down by downshifting....i like hearing the exhaust too...but just wondering.
 

jmk97GT

Member
Oct 29, 2004
178
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16
Dec 8, 2004
#2
  • Dec 8, 2004
  • #2
Shorter clutch life.

Besides the clutch, nothing else should be harmed by this.
 

Stangsgrl

Member
Mar 13, 2004
132
1
18
Mesa, AZ
Dec 8, 2004
#3
  • Dec 8, 2004
  • #3
i guess i'm okay then...i plan to do a stage 2 clutch some day, thanks
 
F

FalconGuy016

New Member
Oct 26, 2004
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Northern VA
Dec 8, 2004
#4
  • Dec 8, 2004
  • #4
Called engine braking not breaking, big difference

I love to do that, because of the sound. You can also use the gears as a precise measurement of slowing when "performance driving" depending on which gear and speed when cornering and stuff
 
D

Darkhorse845

Banned
Nov 17, 2004
101
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0
Las Vegas,Nevada
Dec 8, 2004
#5
  • Dec 8, 2004
  • #5
Ditto shorter clutch life!
 

Route666

Active Member
Aug 16, 2003
1,652
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39
Brisbane, Australia
Dec 8, 2004
#6
  • Dec 8, 2004
  • #6
You also wear the backsides of the gears, which means your gearbox wears more quickly (the gears you use to brake) and the diff gets more wear. You end up having more backlash after a while, which can sound and feel really bad.
 

Stangsgrl

Member
Mar 13, 2004
132
1
18
Mesa, AZ
Dec 9, 2004
#7
  • Dec 9, 2004
  • #7
Route666 said:
You also wear the backsides of the gears, which means your gearbox wears more quickly (the gears you use to brake) and the diff gets more wear. You end up having more backlash after a while, which can sound and feel really bad.
Click to expand...

i do have 3.73's...so they're not stock gears...will that still happen, or just take longer to wear down?
 

Route666

Active Member
Aug 16, 2003
1,652
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39
Brisbane, Australia
Dec 9, 2004
#8
  • Dec 9, 2004
  • #8
Stangsgrl said:
i do have 3.73's...so they're not stock gears...will that still happen, or just take longer to wear down?
Click to expand...

Well, with higher ratio gears the gearbox spins more per wheel revolution, so you'll probably have slightly more wear. You would probably have less wear on the ring gear and more on the pinion gear in your diff. Wear down is bit of a misnomer too, it won't stop wearing, it'll keep wearing, tolerances getting bigger. Hey it worries me too, but I still downshift. Nothing lasts forever, and you don't get a prize for having money left over at the end.
 

Skidawg

Member
Nov 11, 2003
104
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Dec 9, 2004
#9
  • Dec 9, 2004
  • #9
It leads to a shorter clutch life. Every time you shift, you're using one of a finite number of shifts in a clutch. Brakes are cheaper to replace than a clutch, so slowing the car by brakes is the cheapest way, but not necessarily the most fun.
 
M

mrpositraction

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Aug 28, 2004
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Columbia, MO
Dec 9, 2004
#10
  • Dec 9, 2004
  • #10
Along w/ the clutch, I was always told (not sure if it true) that any back pressure on any transmission (worse for automatic) is bad. Now this may be just looking at the gear issue as talked about above, and if this is a case like stated nothing last forever. I down shift once in awhile becaue I to like the sound of exhaust. But I defenitley use my brakes more than down shifting to stop/slow down. When down shifting, I try to meet the engine rpms w/ the transmission so there is minimal clutch wear. Another way to extend the life of you cluthc and components is not to ride the clutch at a stop light. My wife asked if this would hurt the synchronizers (sp?), but there is no sych's in first gear. By riding the clutch you will wear out your throw out bearing more quickly which leads to sqeaking. Now you can drive a long ways on a squeaky throw out bearing, but it is annoying. I am not sure why I have went on for so long about something that does not even pertain to the original question. I will stop now.
 

mrvax

Stay thirsty my friends
Founding Member
Nov 29, 1999
5,225
3
79
SN Moderator: Orlando, Fl.
Dec 9, 2004
#11
  • Dec 9, 2004
  • #11
jmk97GT said:
Shorter clutch life.

Besides the clutch, nothing else should be harmed by this.
Click to expand...


True dat.
 

mikes2008gt

Founding Member
Sep 29, 2002
706
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17
Arlington, Texas
Dec 9, 2004
#12
  • Dec 9, 2004
  • #12
I've heard it's mainly bad if you downshift to 1st and you're still rolling at like 15 mph.

I do like hearing the exhaust sound though. But I don't downshift to first. I wouldn't recommend doing that.
 

Mustang T

New Member
Oct 8, 2003
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WV
Dec 9, 2004
#13
  • Dec 9, 2004
  • #13
My cousin owns a auto part store/garage. I asked him about it and he said "It's cheaper to replace brake pads than a clutch." But I had over 100 k on my last stang, and downshifted 98% of the time when braking to stop and never had clutch problems. Each to their own I say.
 

Bill9000

Member
Oct 15, 2004
182
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16
Dec 9, 2004
#14
  • Dec 9, 2004
  • #14
Stangsgrl said:
Can there be any harm in downshifting a lot. I do it pretty much everytime i break...of course i ease into the gear and all, just i don't like using my breaks all the time. i'd rather just take my time slowing down by downshifting....i like hearing the exhaust too...but just wondering.
Click to expand...

everyone mentions shorter clutch life, but noone mentions LONGER brake life!!!! saves on brakes a lot by doing that! depends on if you drive a lot of hills and so forth, but it's been proven brakes on a stick car last longer than on an automatic car!
 
T

tarch at school

New Member
Feb 24, 2004
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Dec 9, 2004
#15
  • Dec 9, 2004
  • #15
Bill9000 said:
everyone mentions shorter clutch life, but noone mentions LONGER brake life!!!! saves on brakes a lot by doing that! depends on if you drive a lot of hills and so forth, but it's been proven brakes on a stick car last longer than on an automatic car!
Click to expand...
that's really only like 50 bucks at most!
 

40th GT

New Member
Apr 7, 2004
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Lawrenceville, GA
Dec 9, 2004
#16
  • Dec 9, 2004
  • #16
What's the correct way to match the engine RPM with the transmission? Is it as simple as clutch in, downshift, blip the gas, clutch out? I feel like I'm missing something/doing something wrong.
 

kah9911

New Member
May 20, 2004
102
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0
Downingtown, PA
Dec 9, 2004
#17
  • Dec 9, 2004
  • #17
Stangsgrl- you dont just want to slip out the clutch but blip the gas for a smooth down shift.

40th GT said:
What's the correct way to match the engine RPM with the transmission? Is it as simple as clutch in, downshift, blip the gas, clutch out? I feel like I'm missing something/doing something wrong.
Click to expand...

That is what I do unless I going into a corner REAL hot and have to heal/toe it.
 
1

1990BLUEGT

New Member
Aug 30, 2004
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S. CALI
Dec 9, 2004
#18
  • Dec 9, 2004
  • #18
40th GT said:
What's the correct way to match the engine RPM with the transmission? Is it as simple as clutch in, downshift, blip the gas, clutch out? I feel like I'm missing something/doing something wrong.
Click to expand...

yeah, but you will have to practice. if done correctly you shouldn't feel a jolt. it should be as smooth as butter. it will take you a few days to get it just right because you will typically run through different scenarios.

don't be afraid to use your throtle.
 

Evenflow

yellow snow cone lover
Nov 4, 2004
116
0
16
Mass
Dec 9, 2004
#19
  • Dec 9, 2004
  • #19
I just started driving stick a few weeks ago on the 04 GT. Im still not perfect, whenever my friends are in and I shift I can see them getting moved abit. But I guess it takes practice.

When im slowing down I just pop it into neutral, let off clutch, and break until I need to put the clutch in again.

Unless im on the highway going on an offramp or something where I downshift through every gear.

Doing anything wrong?
 

01BlkGT

Founding Member
Jan 22, 2002
1,015
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36
ATX
Dec 9, 2004
#20
  • Dec 9, 2004
  • #20
Lot cheaper to replace the brakes than it is the clutch. It's cool to do it ever once in a while, but unless you like to replace clutches sooner than normal (especially as teh power level goes up) I'd just keep the downshifting for occasions you are feeling frisky ,
 
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