FRPP Gear Break in?

superstang01 · Mar 27, 2007

I have a set of 3.73's ,what is needed to break them in? or what do i need to do?

SRT Handz · Mar 27, 2007

there is no break in period with a rear end gear

CobraRed_96_GT · Mar 27, 2007

there's no need, just enjoy

BennyBlown2v · Mar 27, 2007

No need, but its a good idea to let them get up to operating temp and w/not before you beat on them to get the wear pattern set in. But yeah, if you want, you can just go WOT from the get go!

four six · Mar 28, 2007

By friend waited like 30 secs after he pulled out of the driveway

merc123 · Mar 28, 2007

I broke mine in like this:

1. Back out of parking space
2. Pull out of parking lot at a slow rate of speed to prevent bumper scrub
3. WOT to bottom of hill.
4. Rinse, repeat.

four six · Mar 28, 2007

merc123 said:
I broke mine in like this:

1. Back out of parking space
2. Pull out of parking lot at a slow rate of speed to prevent bumper scrub
3. WOT to bottom of hill.
4. Rinse, repeat.

MyBloodRunsBlue · Mar 28, 2007

you could always take the necessary percautions letting it go through a heat cycle which is letting your car get all the way to operating temp. and driving around then let it cool off and then get it to operating temp. again. i put 80 miles on my 4.10s b4 i gave it hell.

SaleenGT2001 · Mar 28, 2007

i waited about .3 miles before i beroke the tires loose when my 3.90s went in.

DerekStangGT · Mar 28, 2007

oh boy, you guys are gonna make me get up on my soap box.

there is a definite break in period for gears, as there is for any new piece of machinery or assembly where metal contacts metal. when the gears are first mated together, there will be metal shavings caused from the gears rubbing each other, no matter how good the installer sets the measurements. the gears also need to be heat cycled, which is getting the gears up to operating temps, then letting them cool, then repeating once or twice more. this is because the metal, when hot, is a bit more maleable and can better conform itself to it's new operating pattern and contact points. i would change out the fluid after about 1k miles to get all the metal shavings out, then feel free to wail on it.

merc123 · Mar 29, 2007

Ford put mine in so I'm hoping they drove it to make sure it didn't whine. I just assumed they broke it in for me

steveb24 · Mar 29, 2007

this "no break in" is music to my ears. its about time everyone got the word out.

Tim2002GT · Mar 29, 2007

I used the 3 heat cycle method. My installer recommended it.

merc123 · Mar 29, 2007

Sooo, who broke in their motors when they bought their car brand new?

steveb24 · Mar 29, 2007

i hope everybody did, but this is completely different than a motor

swl987 · Mar 29, 2007

i think the dealer says drive it normal for like 15 miles. hey four-six i have the same dog. does yours contsantly get in your way?

DerekStangGT · Mar 29, 2007

merc123 said:
Ford put mine in so I'm hoping they drove it to make sure it didn't whine. I just assumed they broke it in for me

a new car is supposed to be broken in when it's bought. that includes all necessary components; tranny, engine, and rear end

steveb24 said:
this "no break in" is music to my ears. its about time everyone got the word out.

no, its a myth. dont get the word out, it will only ignite the ignorant masses.

merc123 said:
Sooo, who broke in their motors when they bought their car brand new?

im guessing not a lot did, which isnt smart. machines with close tolerances and metal to metal contact need a break in

steveb24 said:
i hope everybody did, but this is completely different than a motor

how are gears completely different than an engine?? both include metal on metal contact, and both need to be broken in. components need to seat themselves properly

Tim2002GT said:
I used the 3 heat cycle method. My installer recommended it.

of course he did, he didnt want you to go balls to the wall from the get-go, have the gears start whining, and blame HIM for a faulty install.

topless98gt · Mar 29, 2007

merc123 said:
I broke mine in like this:

1. Back out of parking space
2. Pull out of parking lot at a slow rate of speed to prevent bumper scrub
3. WOT to bottom of hill.
4. Rinse, repeat.

+1

topless98gt · Mar 29, 2007

DerekStangGT said:
a new car is supposed to be broken in when it's bought. that includes all necessary components; tranny, engine, and rear end

Last time I checked up on breaking in a 4-stroke engine, there was a guy that tested break in's. His results were that it's crucial to go heavy on the car within the FIRST 20 MILES...

He has done this on over 300 vehicles, and his results were the same. If he followed the manufacture break in periods, the pistons didn't seat properly. However, when he was heavy, they seated perfect and were clean as a whistle when he pulled them out.

...I'll try to find the documentation.

DerekStangGT · Mar 30, 2007

topless98gt said:
...I'll try to find the documentation.

please do, i'd be interested in reading it

FRPP Gear Break in?

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