Break in period for gears

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Nov 13, 2002 | 12:14 AM

BriGuy

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Launching!

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From: Abilene, Tx

Break in period for gears

Here soon I am going to be putting some 3:73's into my car and I was just wondering what is a good break in period before I take her to the track? Any help would be greatly appreciated!

Nov 13, 2002 | 05:23 AM

Cool28

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From: Barto PA

Re: Break in period for gears

I heard 500miles.

Nov 15, 2002 | 07:05 PM

KSB

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From: JohnsonCity, NY

Re: Break in period for gears

Everything Iv'e read says at least 500 miles. I put around 1000 before I went to track. So far so good on my 4.10's. After 3000 miles & several
trips to track,no problems,other than a little "whine". <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> About 30 runs on gears.

<img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />

<small>[ November 15, 2002, 07:08 PM: Message edited by: KSB ]</small>

Nov 15, 2002 | 10:28 PM

XFiveLiter

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From: Schererville, IN

Re: Break in period for gears

Brake in period, whats that? My car was at the track the next day launching on ET Streets. Yes, they now whine ALOT <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />

I just couldn't wait 500 miles <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Nov 15, 2002 | 11:40 PM

ls1itldo

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From: Duncan, OK

Re: Break in period for gears

I have heard you need to heat cycle them 3 times before running them hard. Thats what I did and mine are great.

Nov 16, 2002 | 09:55 AM

JWRENCH

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From: CLARKSVILLE,TN

Re: Break in period for gears

I always heard to drive it easy for a few miles and park it for a few minutes to cool off two or three times. This will keep them from getting too hot. Just my $.02

Nov 16, 2002 | 10:49 AM

Bob2of3

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From: Mantua, NJ

Re: Break in period for gears

Here's what I do with new gears.

1st drive around 10 miles then let it completely cool down, do this 2 more times(total 30 miles) then change the fluid. The gears supposedly have a phosphate(?) coating on them which the 3 10 miles drives burn off. With the new fluid in drive it easy for another 470 miles then have at it at the track. My 3.42's don't whine a bit with many low 1.5 passes on them

LAter <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

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Nov 16, 2002 | 04:36 PM

Trevor @ Texas Speed & Perf.

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From: Lubbock, Texas

Re: Break in period for gears

I managed to put 100 miles on my 3.73's before launching on them. I was impressed that I made it that long. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> I've done 500-mile break-ins in the past, and it didn't help any with gear whine. They all started to whine after a few hard launches at the track. My 3.73's whine the worst around 60 MPH. Anything slower or faster, and they're completely quiet. That's my excuse for speeding. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> I did have a set of 3.42's installed in my '98 T/A back in '99, and I put a whopping 25 miles on them before taking it to the track. These gears were silent the entire time I had the rearend. I think it was just from a great setup. I can guarantee that if I ever buy a 12-bolt that I'll buy it unassembled. The Moser rearends are ridiculously loud when setup by Moser!

Trevor

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