S65 differential question
06-25-2008, 07:37 PM
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S65
S65 differential question
i own a 07' S65
i appreciate every part of the car but the gear ratio.
i tried searching for after market diff's but there were none available
for the car. so.. i searched mbusa.com: S65's final drive ratio is 2.65:1
and SLR's is 3.06:1 if i'm correct. i'd like to know if SLR's diff. is compatible
to S65 and has LSD like the 65amg's. please help!!
i appreciate every part of the car but the gear ratio.
i tried searching for after market diff's but there were none available
for the car. so.. i searched mbusa.com: S65's final drive ratio is 2.65:1
and SLR's is 3.06:1 if i'm correct. i'd like to know if SLR's diff. is compatible
to S65 and has LSD like the 65amg's. please help!!
06-25-2008, 08:41 PM
#2
MBWorld Fanatic!
i own a 07' S65
i appreciate every part of the car but the gear ratio.
i tried searching for after market diff's but there were none available
for the car. so.. i searched mbusa.com: S65's final drive ratio is 2.65:1
and SLR's is 3.06:1 if i'm correct. i'd like to know if SLR's diff. is compatible
to S65 and has LSD like the 65amg's. please help!!
i appreciate every part of the car but the gear ratio.
i tried searching for after market diff's but there were none available
for the car. so.. i searched mbusa.com: S65's final drive ratio is 2.65:1
and SLR's is 3.06:1 if i'm correct. i'd like to know if SLR's diff. is compatible
to S65 and has LSD like the 65amg's. please help!!
1) The S65 doesn't have a LSD. The SL65 has one standard, but it's not available on any other 65 model in the US and it's not standard on the S65 anywhere.
2) The differential doesn't affect final drive ratio. The ring and pinion do, and the ring gear is bolted to the differential, but when you change a diff (as when you retrofit a LSD) you retain your ring and pinion. If you want to change final drive ratio you need a new ring and pinion, regardless of the type of differential you have or change to.
3) The electronics of today's cars will not allow you to change final drive ratio anyway. The ECU, TCU, ESP, ABS, BAS, etc. all monitor speed and engine RPM and will at a minimum throw codes if they detect unexpected values. If the ratio changes much, they will lock the transmission into second gear. A ring and pinion change has to be matched with some very sophisticated reprogramming.
06-25-2008, 10:37 PM
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There are a few misconceptions here.
1) The S65 doesn't have a LSD. The SL65 has one standard, but it's not available on any other 65 model in the US and it's not standard on the S65 anywhere.
2) The differential doesn't affect final drive ratio. The ring and pinion do, and the ring gear is bolted to the differential, but when you change a diff (as when you retrofit a LSD) you retain your ring and pinion. If you want to change final drive ratio you need a new ring and pinion, regardless of the type of differential you have or change to.
3) The electronics of today's cars will not allow you to change final drive ratio anyway. The ECU, TCU, ESP, ABS, BAS, etc. all monitor speed and engine RPM and will at a minimum throw codes if they detect unexpected values. If the ratio changes much, they will lock the transmission into second gear. A ring and pinion change has to be matched with some very sophisticated reprogramming.
1) The S65 doesn't have a LSD. The SL65 has one standard, but it's not available on any other 65 model in the US and it's not standard on the S65 anywhere.
2) The differential doesn't affect final drive ratio. The ring and pinion do, and the ring gear is bolted to the differential, but when you change a diff (as when you retrofit a LSD) you retain your ring and pinion. If you want to change final drive ratio you need a new ring and pinion, regardless of the type of differential you have or change to.
3) The electronics of today's cars will not allow you to change final drive ratio anyway. The ECU, TCU, ESP, ABS, BAS, etc. all monitor speed and engine RPM and will at a minimum throw codes if they detect unexpected values. If the ratio changes much, they will lock the transmission into second gear. A ring and pinion change has to be matched with some very sophisticated reprogramming.
so the answer is to stay stock.. ㅠㅠ
