New 3.90 gear set...do i need to break them in
#1
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From: Quebec,Canada
New 3.90 gear set...do i need to break them in
Kinda easy one but i ll still ask.
Got a Strange 12 bolts(around 2500miles on it) and im changing(today) my gear set from 4.11 to 3.90.
Do i need to break them in with some easy driving (under 2000rpm for a couple undred miles) or i could smash the throttle after a couple of heat cycle...
Thanks
Got a Strange 12 bolts(around 2500miles on it) and im changing(today) my gear set from 4.11 to 3.90.
Do i need to break them in with some easy driving (under 2000rpm for a couple undred miles) or i could smash the throttle after a couple of heat cycle...
Thanks
#4
When i had gears put in my car i was told no launching on them for 500 miles but that i could drive pretty much how i wanted. When i had my 9 inch put in i was told to drive it home, about a 45 minute drive, and then let it sit overnight and it would be fine. All the work was done at Thunder Racing, so as long as there isn't any launches or hard shifts on them for a few hundred you should be alright.
#5
I beat the **** out of my 3.90s in my 9" right when the fluid was still dripping out of the fill hole. They only slightly whine.
But yeah, for your application I would do several heat cycles as mentioned above. Easy for the first few hundred miles or so then beat that ***. Don't forget the LSA!
But yeah, for your application I would do several heat cycles as mentioned above. Easy for the first few hundred miles or so then beat that ***. Don't forget the LSA!
#6
I was told by several people with f-bodies making way more power than me to just start beating the hell out of them. They said they never had any problems out of them either.
#7
They need to break in. I prob did 200 miles and started beating mine. The heat generated with new gears is incredible. Heat cycle them several times and plenty of low / medium speed driving first.
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#8
It depends on the gearset, brand, and type. You can bet that if I had a limited slip, Richmonds, and a 10-bolt, I'm breaking them in the best I can. But since I have a 9", full spool, and Motive gears I opted for the beat-that-*** approach.
#9
If they are set up right, have at it.
#10
i agree, i was checking the heat of my rear end after i put it together and it got over 200 degrees in the fist 10 miles, so i did several heat and cool cycles. then just kinda babied it for 500 miles just to be safe. now the rearend runs very cool nd the gears look excellent. i was just affraid to beat on it cause i put it together myself and it was my first rearend.
#11
ran it for 5 min on jack stands in forward and reverse. let it cool for a few hours. drove it around the block for maybe 5 min. let it cool. started blasting around full throttle. Moser set up the center section so it howls, nothing break in could do for that.
#14
#15
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From: Quebec,Canada
After i could just step on it big and if the set up is right(and yes it will i wtach him doing it to learn ) there will be no issue.
I wanted to see if he was telling me the truth.
Thanks i ill probably gonna give it 5 heat cycle(normal drive) and like a 200 miles normal drive too.
Thanks