Does this sound right?

stevstum · 02-13-2003, 05:28 PM

I have my car in getting new shafts, bearings and Richmond 3:55s put in. They got the parts today and said they are still working on it. The fishy part is that he says they have to break them in. He told me that they have to take the car out warm it up and bring it back and let it cool a couple of times. Is this true or is the guy out cruzing my car.

srv1 · 02-13-2003, 07:07 PM

they are correct. you have to break in the new gears so they seat correctly. i also think it makes the gears a little stronger this way, but dont quote me on it.

02-13-2003, 08:17 PM

They really only need to take it out once to make sure everything is meshed up correctly, etc. But yeah, there is a bit of a break in period I believe. When I got my gears put in (years ago) the shop told me not to really beat on it for a hundred miles or so.

sn95gt19 · 02-13-2003, 11:27 PM

when i have my gears installed they tell me to jolt the car a little bit to make sure everything is seated ok. not a 5000 rpm launch or anything, just a little pop the clutch at 1500 to give it a jolt.

84LX89GT · 02-14-2003, 08:31 PM

I've heard you have to break in new gears as well and not to beat on them initially. I've heard that when you first get gears that they are hardened and if they are shocked they are more likely to crack or chip. Once you heat them up they lose part of their tempering and are slightly softer and start to develop the tooth contact pattern and also have more give to them when you really beat on them. That's why you hear about drag racing gear sets not being suitable for the street, they're so soft they wear out really quickly(within several hundred miles) but can survive harder launches and not break.

02-13-2003, 05:28 PM	#1
stevstum Registered Member Join Date: Mar 2000 Location: Salem, Or. USA Posts: 233	Does this sound right? I have my car in getting new shafts, bearings and Richmond 3:55s put in. They got the parts today and said they are still working on it. The fishy part is that he says they have to break them in. He told me that they have to take the car out warm it up and bring it back and let it cool a couple of times. Is this true or is the guy out cruzing my car. __________________ Steve Stumbaugh 89 LX 5.0 5sp, Removed air silencer Mac High Flow Air Filter Motorcraft 8mm wires Autolite platinum plugs Mac O/R h-pipe Flowmaster American Thunder 3:55 gears Accel Super Coil (42,000) 75 mm Mass Air Meter

02-13-2003, 07:07 PM	#2
srv1 Get down..... Join Date: Apr 2001 Location: Room 103 Posts: 2,095	they are correct. you have to break in the new gears so they seat correctly. i also think it makes the gears a little stronger this way, but dont quote me on it. __________________ Cobra brakes are on! Finally..... ------------------------------------------------

02-13-2003, 08:17 PM	#3
Simi Stang Guest Posts: n/a	gears break in They really only need to take it out once to make sure everything is meshed up correctly, etc. But yeah, there is a bit of a break in period I believe. When I got my gears put in (years ago) the shop told me not to really beat on it for a hundred miles or so.

02-13-2003, 11:27 PM	#4
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	when i have my gears installed they tell me to jolt the car a little bit to make sure everything is seated ok. not a 5000 rpm launch or anything, just a little pop the clutch at 1500 to give it a jolt. __________________ 95gt lazer red (98 cobra clone) Rice Haters Club Member #116

02-14-2003, 08:31 PM	#5
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	I've heard you have to break in new gears as well and not to beat on them initially. I've heard that when you first get gears that they are hardened and if they are shocked they are more likely to crack or chip. Once you heat them up they lose part of their tempering and are slightly softer and start to develop the tooth contact pattern and also have more give to them when you really beat on them. That's why you hear about drag racing gear sets not being suitable for the street, they're so soft they wear out really quickly(within several hundred miles) but can survive harder launches and not break. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

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