Rear End Question
08-20-2012, 01:51 PM
#1
Burning Brakes
Thread Starter
Rear End Question
I tried search and didn't find the answer.How do I find out which rear end I have in my A4 2001 vert?
Thanks for any info.
Fred
Thanks for any info.
Fred
08-20-2012, 05:10 PM
#4
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You should also have a tag (more of a decal actually) on the differential cover that says what gears are inside. Mine has it - but over time it can become very hard to see what was printed on the tag. Best way is like Sonny71 mentioned.
08-20-2012, 05:21 PM
#5
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If you want to know for sure, manual tranny 4th gear make a note of rpm you turn at a given mph, measure tire diameter ..then plug in the info into any of the online gear ratio converters available online.
Not sure which gear is 1:1 in an auto (3rd maybe?)
-Frank aka GE
Not sure which gear is 1:1 in an auto (3rd maybe?)
-Frank aka GE
08-20-2012, 11:10 PM
#6
Burning Brakes
Seems like I remember that you put tranny in 3rd gear at 75 mph and divide the rpm's by 1000. I did that and it turned 2730 rpm which means I have the 2.73 in mine.
08-21-2012, 03:13 AM
#7
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Check the RPO codes:G90 Axle, Rear, 3.15 Ratio
G92 Axle, Rear, Performance Ratio
GU2 Axle, Rear, 2.73 Ratio
GU6 Axle, Rear, 3.42 Ratio
My 02 A4 Vert came with 3.15 ratio