Gear Install

daschaffa17 · April 7th, 2009, 09:15 AM

ok finally got my tickets payed off and now my car is going into the shop tonight. but i have a question do gears take a break in period after they are installed

leebunnyz · April 7th, 2009, 09:19 AM

yeah...they say like 300 miles or something...but i only could wait about 25 miles until i started to rip it.

daschaffa17 · April 7th, 2009, 09:20 AM

so like i am suppose to get my car back on thursday night or friday morning... but i want to go to the track friday night would that be a good idea?

leebunnyz · April 7th, 2009, 09:28 AM

probably not...but like i said i didnt wait long at all.

Whiskey11 · April 7th, 2009, 10:40 AM

Originally Posted by leebunnyz

yeah...they say like 300 miles or something...but i only could wait about 25 miles until i started to rip it.

I cant think of a reason why you'd have to wait 300 miles. Most of the mechanical work hardening will happen in the first couple thousands of revolutions or the gear. 300 miles seems a bit excessive. In 4th gear it's 1 revolution of the engine = 1 revolution of the tires amirite? (Isnt that the definition of the drive gear?) So 4th gear for a few minutes at 4000 RPM's is a fairly large number of gear revolutions in the differential... How does that not work harden it sufficiently?

Of course, I'm dieing to know the real reason why you'd drive 300 miles before getting hard on it. My new rear diff in my 06 Mustang went about 25 miles before the first time I got on it and didnt have any adverse effects. Having said that though, someone enlighten me as to why 300 miles is the break in period for this stuff?

daschaffa17 · April 7th, 2009, 10:45 AM

yea like i would really like to know if i could race it friday with 50 miles on the gears..... or if when i get it just drive the shit out of it and put like 100 + miles on it in a day

joeice14 · April 8th, 2009, 02:18 AM

Very interested about this have heard mixed reviews myself... I was wondering though if it was bad to run full synthetic right off the bat... I heard that it could back the gears not break in correctly because they are too lubed... Is that bull???

usafimj · April 8th, 2009, 02:30 AM

I think I waited about 50 miles then went to town

roxas331 · April 8th, 2009, 10:21 AM

Daschaffa if you dpntbwait 300 miles your car........... WILL DIE!

Margarita Girl · April 8th, 2009, 10:33 AM

You drive around a bit and if there is a problem you bring it back. Would it take 300 miles to figure out faulty gears or install?

Just asking cause when I picked up my car after the 4.10 install, the guy went for a ride with me and he said they tested it and there should be no issues and no "break in" period. He was right cause I've had the gears over a year and no noise at all.

DiMora · April 8th, 2009, 10:34 AM

Originally Posted by roxas331

Daschaffa if you dpntbwait 300 miles your car........... WILL DIE!

Fish · April 8th, 2009, 10:37 AM

I would not see what would have to break in. You have two gears meshed together. If that mesh is set correctly then there should be no wear even at first drive. I had 52k when I switched and the stock 3.55 look just like the new ones.

silverstang · April 8th, 2009, 11:35 AM

I was at the track the day I installed mine. Have about 30k miles on them now with no issues.

NeverEnuff · April 8th, 2009, 11:59 AM

No break in req.

I would go into why 'I' think shops tell you 300-500 miles...but that would be MY opinion and I don't want to be biased.

My first set of gears install were done by a avid circle track racer. He puts in NEW gears...sets them up. Pushs the car to start it and runs the shit out of it. never had a set fail yet...and swears up and down by the royal purple and Lucas diff fluid...says it keeps the temps way down.

I have put 2-3 sets in my car and quite a few in others...never made it more than down the street before we were banging gears and doing clutch drops. All the gears are still living...and doing great.

07stanggt · April 8th, 2009, 12:08 PM

The hardening or heat treating process is for certain gears...Richmond namely. Its old school.

Bang on it from the get go.

daschaffa17 · April 8th, 2009, 12:10 PM

i turned in the car yesterday and they said to have it go through 3 heat cycles before i mash on the throttle. which isnt too bad so i will do that and going to the track the next day

Black Baby II · April 8th, 2009, 12:26 PM

Drive the damn thing like you stole it !!!!!

Don't pussy it around get after it.

stangnewb · April 8th, 2009, 02:30 PM

Originally Posted by daschaffa17

ok finally got my tickets payed off and now my car is going into the shop tonight. but i have a question do gears take a break in period after they are installed

Make 100% sure that the shop that does the gears knows what they are doing. Incorrect installation will cause roaring, whining, or even vibrations. I am sorting though an incorrect install at the moment and I get roaring at certain rpm and vibrations on decel.....my gears have too much play (side to side) and incorrect pinion bearing preload. They might have been working off made up torque specs.

daschaffa17 · April 8th, 2009, 02:32 PM

i seem to trust the shop im going to so i think it should be fine

stangnewb · April 8th, 2009, 03:47 PM

Originally Posted by daschaffa17

i seem to trust the shop im going to so i think it should be fine

I also trusted the shop that initially did my install...look where that got me. I basically have to have them installed again. Hopefully the gears are in good enough shape so that i dont have to get a new set.

April 7th, 2009, 09:15 AM	#1
daschaffa17 Regular 2008 mustang GT 13.3@103 Join Date: Sep 2008 Location: Ofallon Missouri Posts: 399	Gear Install ok finally got my tickets payed off and now my car is going into the shop tonight. but i have a question do gears take a break in period after they are installed __________________ 2008 Vapor Silver Mustang GT (auto) JBA Shorty headers, 3.73 FRPP gears, Anderson Ford Power pipe CAI/ 93 octane firm shift tune, Pypes o/r X-pipe, SSS Terminators Axle backs Ratchet Shifter Crew #2

April 7th, 2009, 09:19 AM	#2
leebunnyz MM Fanatic Join Date: Feb 2007 Location: Vineland, NJ Posts: 3,569	yeah...they say like 300 miles or something...but i only could wait about 25 miles until i started to rip it. __________________ Jesus Christ is #1 "The Founder Of Crews"

April 7th, 2009, 09:20 AM	#3
daschaffa17 Regular 2008 mustang GT 13.3@103 Join Date: Sep 2008 Location: Ofallon Missouri Posts: 399	so like i am suppose to get my car back on thursday night or friday morning... but i want to go to the track friday night would that be a good idea? __________________ 2008 Vapor Silver Mustang GT (auto) JBA Shorty headers, 3.73 FRPP gears, Anderson Ford Power pipe CAI/ 93 octane firm shift tune, Pypes o/r X-pipe, SSS Terminators Axle backs Ratchet Shifter Crew #2

April 7th, 2009, 09:28 AM	#4
leebunnyz MM Fanatic Join Date: Feb 2007 Location: Vineland, NJ Posts: 3,569	probably not...but like i said i didnt wait long at all. __________________ Jesus Christ is #1 "The Founder Of Crews"

April 7th, 2009, 10:45 AM	#6
daschaffa17 Regular 2008 mustang GT 13.3@103 Join Date: Sep 2008 Location: Ofallon Missouri Posts: 399	yea like i would really like to know if i could race it friday with 50 miles on the gears..... or if when i get it just drive the shit out of it and put like 100 + miles on it in a day __________________ 2008 Vapor Silver Mustang GT (auto) JBA Shorty headers, 3.73 FRPP gears, Anderson Ford Power pipe CAI/ 93 octane firm shift tune, Pypes o/r X-pipe, SSS Terminators Axle backs Ratchet Shifter Crew #2 Last edited by daschaffa17 : April 7th, 2009 at 10:58 AM.

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April 8th, 2009, 02:18 AM	#7
joeice14 Hardcore Enthusiast 2006 Mustang GT Join Date: Oct 2006 Location: new york Posts: 1,639	Very interested about this have heard mixed reviews myself... I was wondering though if it was bad to run full synthetic right off the bat... I heard that it could back the gears not break in correctly because they are too lubed... Is that bull??? __________________ Mods: Some Random Shit... GT500 fuel system for sale (pump & injectors) www.Radmustangs.com

April 8th, 2009, 02:30 AM	#8
usafimj MM Fanatic 2007 Ford Mustang GT 13.253 @ 106.96mph Join Date: Sep 2007 Location: Oklahoma City, Ok. Posts: 4,734	I think I waited about 50 miles then went to town __________________ JLT CAI, X3, Hurst STS, FRPP (4.10s & Stingers) Stage II NSR Comp Cams, Kooks LT & catted H, BMR (Lowering Springs, Adj Panhard Bar, LCA w/ brackets), Tokico HP shocks/struts Hurst Crew Member #13 Military Crew E-5

April 8th, 2009, 10:21 AM	#9
roxas331 Regular 2007 Mustang GT Join Date: Oct 2007 Location: NJ Posts: 119	Daschaffa if you dpntbwait 300 miles your car........... WILL DIE!

April 8th, 2009, 10:33 AM	#10
Margarita Girl Hardcore Enthusiast 2005 GT Vert, 5-speed Join Date: Feb 2008 Posts: 1,153	You drive around a bit and if there is a problem you bring it back. Would it take 300 miles to figure out faulty gears or install? Just asking cause when I picked up my car after the 4.10 install, the guy went for a ride with me and he said they tested it and there should be no issues and no "break in" period. He was right cause I've had the gears over a year and no noise at all.

April 8th, 2009, 10:37 AM	#12
Fish Regular 2005 Mustang GT Join Date: Apr 2007 Location: MA Posts: 317	I would not see what would have to break in. You have two gears meshed together. If that mesh is set correctly then there should be no wear even at first drive. I had 52k when I switched and the stock 3.55 look just like the new ones. __________________ JLT CAI Bama tunes Flowmasters Deep Dish Bullitt Wheel (18x9) 4.10 gears

April 8th, 2009, 11:35 AM	#13
silverstang Hardcore Enthusiast 2007 Mustang GT 11.70 Join Date: Mar 2008 Location: Buna, Texas Posts: 2,547	I was at the track the day I installed mine. Have about 30k miles on them now with no issues. __________________ 11.80@118 11.70@114 Bassani Crew Member #3

April 8th, 2009, 11:59 AM	#14
NeverEnuff Regular 1999 Mustang GT 10.6@130 Join Date: Jan 2009 Location: Texas Posts: 467	No break in req. I would go into why 'I' think shops tell you 300-500 miles...but that would be MY opinion and I don't want to be biased. My first set of gears install were done by a avid circle track racer. He puts in NEW gears...sets them up. Pushs the car to start it and runs the shit out of it. never had a set fail yet...and swears up and down by the royal purple and Lucas diff fluid...says it keeps the temps way down. I have put 2-3 sets in my car and quite a few in others...never made it more than down the street before we were banging gears and doing clutch drops. All the gears are still living...and doing great.

April 8th, 2009, 12:08 PM	#15
07stanggt I Post Entirely Way Too Much 2007 GT Join Date: Mar 2007 Location: Ellicott City, MD Posts: 11,946	The hardening or heat treating process is for certain gears...Richmond namely. Its old school. Bang on it from the get go.

April 8th, 2009, 12:10 PM	#16
daschaffa17 Regular 2008 mustang GT 13.3@103 Join Date: Sep 2008 Location: Ofallon Missouri Posts: 399	i turned in the car yesterday and they said to have it go through 3 heat cycles before i mash on the throttle. which isnt too bad so i will do that and going to the track the next day __________________ 2008 Vapor Silver Mustang GT (auto) JBA Shorty headers, 3.73 FRPP gears, Anderson Ford Power pipe CAI/ 93 octane firm shift tune, Pypes o/r X-pipe, SSS Terminators Axle backs Ratchet Shifter Crew #2

April 8th, 2009, 12:26 PM	#17
Black Baby II Regular 2007 GT / CS Join Date: Feb 2008 Location: SC Posts: 255	Drive the damn thing like you stole it !!!!! Don't pussy it around get after it. __________________ Paxton 2200 SL, BBK Equal Length Shorties, Pypes Off Road X, Corsa Axle Back, Hurst Short Throw, J&M UCA / LCA / Adj Pan Rod, BMR Drop / Relo Brkts, FRPP STB / 4:10's / Diff Support / Hot Rod Cams, SCT Brenspeed Tuned, + other stuff Cammed Crew #2

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April 8th, 2009, 02:32 PM	#19
daschaffa17 Regular 2008 mustang GT 13.3@103 Join Date: Sep 2008 Location: Ofallon Missouri Posts: 399	i seem to trust the shop im going to so i think it should be fine __________________ 2008 Vapor Silver Mustang GT (auto) JBA Shorty headers, 3.73 FRPP gears, Anderson Ford Power pipe CAI/ 93 octane firm shift tune, Pypes o/r X-pipe, SSS Terminators Axle backs Ratchet Shifter Crew #2

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