how important is it to "break in the final drive"
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Joined: Nov 2002
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From: Hawaii
how important is it to "break in the final drive"
i have like 130 miles on it now, and want to drag race it. i wont be "launching" the car, just rollign on to it.
but should i really wait 500 miles?
im itching
but should i really wait 500 miles?
im itching
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From: Lake Tittycaca
Well then how bout providing more info on what you installed.
You are talking about the final drive gears right?? (BTW, some most certainly do come with instructions)
I'm not understanding your question..you spent the time and $$ on gears and now don't want to break them in properly?
You are talking about the final drive gears right?? (BTW, some most certainly do come with instructions)
I'm not understanding your question..you spent the time and $$ on gears and now don't want to break them in properly?
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Joined: Mar 2001
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From: Honolulu
Conor: I suggest you post this in the "Under the Hood" section. This is a rather technical question and I don't think you'll find it with these guys.
I didn't know you got this mod done. Did you get the 4.57 or 4.77's? I recommend you wait the recommended 500 miles, as it's always wise to err on the safe side for something that's so costly to install/fix.
I didn't know you got this mod done. Did you get the 4.57 or 4.77's? I recommend you wait the recommended 500 miles, as it's always wise to err on the safe side for something that's so costly to install/fix.
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From: Timonium
You should follow the advice provided by Richmond Gear on its web site:
BREAK IN
A new ring and pinion installation, especially a high numeric ratio with new bearings, can cause an excessive heat buildup in the rear end and cause softening of the gear teeth and bearings if a break in is not performed.
Street vehicles should be driven at normal street driving speed for approximately 10 miles, then stop and let cool for 30 minutes. Do this 2 to 3 times. Towing vehicles need approximately 200-300 miles of normal street driving before being used for towing.
On circle track race cars make approximately 6 to 8 laps at slow speed, then let cool for 30 minutes. Make 6 to 8 more laps at slow speed, then 2 to 3 laps at full speed, the let cool again for 30 minutes.
Drag cars need only an initial run-in since they are driven short distances and heat is not normally a problem with proper lube and backlash allowance.
NOTE: If after the above break in is performed, overheating of the rear end is suspected, repeat the final portion of the break in procedures.
BREAK IN
A new ring and pinion installation, especially a high numeric ratio with new bearings, can cause an excessive heat buildup in the rear end and cause softening of the gear teeth and bearings if a break in is not performed.
Street vehicles should be driven at normal street driving speed for approximately 10 miles, then stop and let cool for 30 minutes. Do this 2 to 3 times. Towing vehicles need approximately 200-300 miles of normal street driving before being used for towing.
On circle track race cars make approximately 6 to 8 laps at slow speed, then let cool for 30 minutes. Make 6 to 8 more laps at slow speed, then 2 to 3 laps at full speed, the let cool again for 30 minutes.
Drag cars need only an initial run-in since they are driven short distances and heat is not normally a problem with proper lube and backlash allowance.
NOTE: If after the above break in is performed, overheating of the rear end is suspected, repeat the final portion of the break in procedures.
