Used gears safe or not?!?!

brooksgnm · 02-26-2001, 06:02 PM

I've heard so many different opinions, does anybody know if it's really safe to run used ring & pinion gears?(assuming they haven't been abused) Some people say that because they have their unique wear marks they should never be used again unless you can install them exactly the way they came out which is impossible. Others say they've installed used gears with no problems..? Would the savings be worth it? Does anybody have the final answer? Thanks a lot!

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85 GT many mods drag car
84 SVO auto x type car

sedanman · 02-26-2001, 07:18 PM

Do it right the first time gears are a pain to install and why go through it twice just to save a $100 or less. Also odds are the old gears will wine, save your money on other mods but spend the money here you will appreciate it in the long run.

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1991 Lx sedan 5.0, 5spd, GT-40 Heads, Cobra intake, 73MM mass air, 65mm TB, FPR, 24lb injectors, E303, Headers,off road H-pipe, Flows, K&n , hurst, 3:55's, pullies, etc...
Best ET 13.5 (2.15 60ft)
Best MPH 103.9
On semi-bald street tires
New mods! electric fan, nitto drag radials, mac upper and lower control arms, HD trac-loc, lakewood 50/50's on back, shift light, centerforce dual friction, and rebuilt heavy duty T5

mustang17 · 02-26-2001, 10:31 PM

Gears have to be the worst install project known to man. It's not worth saving 50 bucks on the gears if you have to reinstall them a year later. No matter what condition they are in, I wouldn't do it.

------------------
1995 GT Black sleeper
Edelbrock 6037 heads,Edelbrock proformer intake,Edelbrock cam, 70mm TB,75mm pro-m mass air,Taylor wires, Underdrive pulleys,Equal length headers,K&N filter
Flowmaster cat-back, Eibach pro rate springs
lower control arms
3.73 gear Centerforce clutch

Capri306 · 02-26-2001, 10:55 PM

I wouldn't get used gears, either. Like said above, unless you can set them up exactly like they were, you're prone to gear whine. If you can turn your stereo up loud enough to overcome that, go for it. Save yourself some pain in the long run and get a set that comes with all the installation parts. People that say they've had no problems are either lucky or haven't checked the gear mesh...or have really loud stereos. Good luck.

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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch

Bob · 02-27-2001, 08:10 PM

Here's my two cents on this one. There's actually nothing wrong with used gears as long as the bearing diameters aren't scored, and the wear pattern is good. just make sure they are a set. (not a ring out of one set and a pinion out of another set, even if they are the same ratio as they wear together)I've had a couple Mustangs with 9" rears and I also used to mud drag a '78 Bronco with a 9" rear, so I usually had a few sets of gears in different ratios laying around. Put lots of gears in different vehicles and never had a problem.

------------------
1985 Mustang GT

'85 GT 13.20 @ 105.8 / '72 Mach1
Long list...check website!!
My Website

02-26-2001, 06:02 PM	#1
brooksgnm Registered Member Join Date: May 1999 Location: Union, Ohio, USA Posts: 582	Used gears safe or not?!?! I've heard so many different opinions, does anybody know if it's really safe to run used ring & pinion gears?(assuming they haven't been abused) Some people say that because they have their unique wear marks they should never be used again unless you can install them exactly the way they came out which is impossible. Others say they've installed used gears with no problems..? Would the savings be worth it? Does anybody have the final answer? Thanks a lot! ------------------ 85 GT many mods drag car 84 SVO auto x type car

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02-26-2001, 07:18 PM	#2
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	Do it right the first time gears are a pain to install and why go through it twice just to save a $100 or less. Also odds are the old gears will wine, save your money on other mods but spend the money here you will appreciate it in the long run. ------------------ 1991 Lx sedan 5.0, 5spd, GT-40 Heads, Cobra intake, 73MM mass air, 65mm TB, FPR, 24lb injectors, E303, Headers,off road H-pipe, Flows, K&n , hurst, 3:55's, pullies, etc... Best ET 13.5 (2.15 60ft) Best MPH 103.9 On semi-bald street tires New mods! electric fan, nitto drag radials, mac upper and lower control arms, HD trac-loc, lakewood 50/50's on back, shift light, centerforce dual friction, and rebuilt heavy duty T5

02-26-2001, 10:31 PM	#3
mustang17 Registered Member Join Date: Sep 2000 Location: Concord, MA, USA Posts: 264	Gears have to be the worst install project known to man. It's not worth saving 50 bucks on the gears if you have to reinstall them a year later. No matter what condition they are in, I wouldn't do it. ------------------ 1995 GT Black sleeper Edelbrock 6037 heads,Edelbrock proformer intake,Edelbrock cam, 70mm TB,75mm pro-m mass air,Taylor wires, Underdrive pulleys,Equal length headers,K&N filter Flowmaster cat-back, Eibach pro rate springs lower control arms 3.73 gear Centerforce clutch

02-26-2001, 10:55 PM	#4
Capri306 Moderator Join Date: Sep 1998 Location: Grand Rapids, Michigan, USA Posts: 1,001	I wouldn't get used gears, either. Like said above, unless you can set them up exactly like they were, you're prone to gear whine. If you can turn your stereo up loud enough to overcome that, go for it. Save yourself some pain in the long run and get a set that comes with all the installation parts. People that say they've had no problems are either lucky or haven't checked the gear mesh...or have really loud stereos. Good luck. ------------------ Capri306, Moderator, The Mustang Works Online 1979 Mercury Capri, 5.0L -- C4 -- 2.73 1987 Mustang LX Notch

02-27-2001, 08:10 PM	#5
Bob "Old School Gearhead" Join Date: Oct 1998 Location: Peru, Illinois Posts: 617	Here's my two cents on this one. There's actually nothing wrong with used gears as long as the bearing diameters aren't scored, and the wear pattern is good. just make sure they are a set. (not a ring out of one set and a pinion out of another set, even if they are the same ratio as they wear together)I've had a couple Mustangs with 9" rears and I also used to mud drag a '78 Bronco with a 9" rear, so I usually had a few sets of gears in different ratios laying around. Put lots of gears in different vehicles and never had a problem. ------------------ 1985 Mustang GT '85 GT 13.20 @ 105.8 / '72 Mach1 Long list...check website!! My Website