Gear Break In Period
- Thread starter SteedaGT9150
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Beasty306GT
Active Member
I just had mine done....its 500 miles break in period....First 100 miles dont beat on it...new gears need to mesh...could also have metal shavings in there....im half way broken in...then i got to change the gear oil
Dizzy_ax
Member
id break them in, but i didnt! lol... really doesnt hurt to take it slow though. After i got them in i did a little pull here and there and then drove it about 300 miles normal. 100+ passes but you never know! each car is different and its better to be safe then sorry.
I_AM_CANADIAN
Member
Same with a new clutch 
bubba-dough
Active Member
I am sure that you should, but I have never broken in new gears. I have never had a problem with them.
You are heat-cycling them to relieve stresses more than wearing in of the actual meshing surfaces.
You pretty much just get them hot and let them cool. About 500 miles of that hot-cold cycling will releive the internal stresses.
You pretty much just get them hot and let them cool. About 500 miles of that hot-cold cycling will releive the internal stresses.
thanks guys thats what i needed to hear. ive been waiting all day to pick it up and im finally leaving work to get it.
fiveohwblow
Official Member
- Jul 21, 2005
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Beasty306GT
Active Member
nunly94gt
Founding Member
We never break them in at the dealership. No matter the car, cause nobody listens if you say to. We drive them about 20 miles ourselves and at all speeds if you dont hear any howling or whining your fine.
QUICK! what color speedo gear do i need? 373's for a 5 speed. gears are awesome but the speedos driving me crazy already
1991notchbackLX
Active Member
thank ya sir. cars parked for the evening, going to enjoy some PBR's and chill with friends. ill update tomorrow after i beat on her a little bit
Beasty306GT
Active Member
I just put a red gear in the tranny 23 tooth....mines an 89...with 373's
speedo works perfect
1991notchbackLX
Active Member
your car is a 1991, just like mine... i have a factory v8 5 speed with 3:73s and mine took a white 23 tooth, that should be the one you need
Beasty306GT
Active Member
Ring & Pinion Speedo Gear Part Number
1983-89 Mustang Manual 5-Speed
3.08 18 Tooth
3.27 19 Tooth
3.55 20 Tooth
3.73 21 Tooth
4.10 23 Tooth
1990-93 Mustang Manual 5-Speed
3.08 20 Tooth
3.27 21 Tooth
3.55 23 Tooth
there isnt one for a 91 and 373
1983-89 Mustang Manual 5-Speed
3.08 18 Tooth
3.27 19 Tooth
3.55 20 Tooth
3.73 21 Tooth
4.10 23 Tooth
1990-93 Mustang Manual 5-Speed
3.08 20 Tooth
3.27 21 Tooth
3.55 23 Tooth
there isnt one for a 91 and 373
93tealstang
Founding Member
With the 1990 and up's, the white gear will be close but it will only last temporarily. Mine got chewed up after a little over a year. To completely fix the speedo and make it correct, you'll have to swap out the transmission tailshaft "driven" gear along with a speedo drive gear.
The white speedo gears and not actually a Ford made gear. They are a factory Jeep gear. Many companies sell and market them as Ford's but if they were Ford made, they wouldn't get chewed up since the gears simply don't mesh correctly. The white gears are just a simple temporary fix.
The white speedo gears and not actually a Ford made gear. They are a factory Jeep gear. Many companies sell and market them as Ford's but if they were Ford made, they wouldn't get chewed up since the gears simply don't mesh correctly. The white gears are just a simple temporary fix.
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