Gears Break-in 500 Miles? - Ford Mustang Forum
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post #1 of 24 (permalink) Old 02-10-2009 Thread Starter
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Gears Break-in 500 Miles?

Hey guys, on the motive 4.10 gear instruction manual, at the end it says a break in period of 500 miles is recommended. This means no going speeds of 50 or 60 mph...

I do a fair amount of highway driving so this little fact kind of suprised me. It is possible for me to take backroads but i'd just have to factor in some extra time every day.

I've read in several posts on this forum that breaking in gears takes only a few days, if not a few hours, of light moderate driving with plenty of cool down time.

CAN ANYONE TELL ME IF A BREAK-IN PERIOD OF 500 MILES IS NECESSARY OR IF A FEW WARM UP COOL DOWN CYCLES WILL DO THE TRICK.

Thanks a ton for all your help

2007 Mustang V6 - Auto - Borla Axleback Exhaust, Airaid CAI, SCT XCAL 3, Shaftmaster's Aluminum Driveshaft.
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post #2 of 24 (permalink) Old 02-10-2009
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I know that you need to run a bunch of "cycles". Drive like 50 miles, let her cool down for 30 min. then drive her for another 50 miles and let her cool down.

I am sure STL will have the answer, he is on his 6th set of gears now

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post #3 of 24 (permalink) Old 02-10-2009
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65 wont kill you, just dont do 100

a few warm ups and cool downs are good.

nice and easy fro the first 200 miles.

then u can go normal after that id say. dont stopmp them or launch till after 5


but if u hit teh highway 65 will be ok, i took mine down the highway home.

heat up is heat up. just take your time getting up to speed the first couple hundred miles.

i had mine installed saturday im already over 300
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post #4 of 24 (permalink) Old 02-10-2009
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You know, when you buy these cars from the lot, brand spankin new, the really never say "take it easy for 500 miles" and the gears usually only have lot miles on them only. Breaking in engines/gears is allways a prudent idea, but the fact is, that you probably could start driving them whatever way you will eventually drive them, and the percentagages are waaaay on your side that nothing bad will occur. It would be prudent for you not to power drop them or bang the heck out of em till you have a few hundred miles on them, but other than that? Just drive.

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post #5 of 24 (permalink) Old 02-10-2009
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arent factory gears pre stressed?

youll be ok man just dont do any wheelies till u pass 500 miles
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post #6 of 24 (permalink) Old 02-10-2009
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i waited till 500 miles on my f150 before i started driving it normally. the gear shop recommended 500-600 miles to ensure that i didnt get any noise later on. i waited till 500 miles and never had any problems. its an expensive mod so i only wanted to do it once.
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post #7 of 24 (permalink) Old 02-10-2009 Thread Starter
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haha alright i appreciate it, thanks guys. I guess i'll be driving in the right lane for a couple weeks

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post #8 of 24 (permalink) Old 02-10-2009
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I waited 100 miles, and I've been tearing my car up ever since for about 100 miles or more after that. I have the Ford racing 4.10's and I haven't had any problems. The guy that installed my gears just said don't beat on it for 100 miles or so, then I'll be ok to nail it.

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post #9 of 24 (permalink) Old 02-10-2009
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I was told easy 500 miles. Not to get on it at all. 65 mph sould be fine. I have zero issues, no whinning at all
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I have punched mine a few times, nothing really hard though. I'm almost at 200 miles on mine now. I have not gone over 65 more than one time (probably went 68 or 70 because my speedo was off for a day). I just chill in the right lanes and take it easy.

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Two complete heat cycles. Drive 15 mins and cool completely. Then drive 30 mins and cool completely. Drive 65 or under for 500 miles and no hard launches or towing.

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post #12 of 24 (permalink) Old 02-12-2009 Thread Starter
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ok, how long should i cool for, an hour or two?

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Quote:
Originally Posted by jcvelli View Post
ok, how long should i cool for, an hour or two?
Until the housing is cool to the touch.

1965 Mustang Coupe
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Quote:
Originally Posted by stlwagon View Post
Two complete heat cycles. Drive 15 mins and cool completely. Then drive 30 mins and cool completely. Drive 65 or under for 500 miles and no hard launches or towing.
sounds like my commute...... guess I don't even have to think about it!

although, I have like I said "tested" it just to see both wheels lay a track, but I didn't mash it, I rolled into it kinda slow. but so far, I haven't had any problems after 3 weeks.
wish me luck :hihi:

2005 Torch red, predator 93 octane, K&N filter, Pypes true duals, Eibach Pro-kit springs,4.10 posi 8.8 rear end. GT fanblades with Eagle F1's, GT500 rear bumper/spoiler/front splitter
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Quote:
Originally Posted by billthecougnut View Post
sounds like my commute...... guess I don't even have to think about it!

although, I have like I said "tested" it just to see both wheels lay a track, but I didn't mash it, I rolled into it kinda slow. but so far, I haven't had any problems after 3 weeks.
wish me luck :hihi:
If you've given it 3 weeks, you should be just fine.

1965 Mustang Coupe
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