FRPP Gear Break in?

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MyBloodRunsBlue

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Feb 1, 2007
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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.
 

DerekStangGT

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Feb 18, 2003
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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.
 

DerekStangGT

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Feb 18, 2003
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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

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.

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

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



I used the 3 heat cycle method. :shrug: 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

Adhesive Feces
Mar 31, 2005
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Arlington, TX
dale3h.com
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.
 
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