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Rear Subframe

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Old 07-22-2009, 11:26 AM
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Rear Subframe

Well this is a fun story. When I bought my '06 SS S/C the rear subframe was tweaked out of spec making the driver's rear tire stick out a little. It created an annoying amount of road noise and obviously was contributing to extra wear on both the tire and hub & bearing. Well dealer paid for that to be replaced with another subframe from an '06 rather than new, grr to that but I'll accept it. Now she's in spec and all nice. Is the rear subframe setup unique? There's no axle back there, just a pair of hub & bearings for the wheel bolted onto the subframe. I've never seen that before.


Also, which of the two front wheels is the drive wheel?
Old 07-22-2009, 11:45 AM
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BOTH of the wheels are driven, thats why there is an axle going to both.
Old 07-22-2009, 11:55 AM
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Originally Posted by ForsakenOutlaw57
Well this is a fun story. When I bought my '06 SS S/C the rear subframe was tweaked out of spec making the driver's rear tire stick out a little. It created an annoying amount of road noise and obviously was contributing to extra wear on both the tire and hub & bearing. Well dealer paid for that to be replaced with another subframe from an '06 rather than new, grr to that but I'll accept it. Now she's in spec and all nice. Is the rear subframe setup unique? There's no axle back there, just a pair of hub & bearings for the wheel bolted onto the subframe. I've never seen that before.


Also, which of the two front wheels is the drive wheel?
unless you have G85, the one with traction is technically driving the car. With 100% traction they are both pulling your car lol. was that really a question? lol
Old 07-22-2009, 12:01 PM
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Thumbs down

Originally Posted by koch1ar
unless you have G85, the one with traction is technically driving the car. With 100% traction they are both pulling your car lol. was that really a question? lol
I don't actually have the G85 option so I'm trying to find out which of the two wheels in the front will actually be pulling the car.
Old 07-22-2009, 12:06 PM
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Originally Posted by koch1ar
the one with traction is technically driving the car. With 100% traction they are both pulling your car lol
heres ur answer
Old 07-22-2009, 12:07 PM
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Originally Posted by koch1ar
heres ur answer
One front wheel drive cars, just like rear wheel without posse traction, doesn't only one actual wheel receive direct power from the engine?
Old 07-22-2009, 12:15 PM
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nope, they equally get power, until one looses traction. i dont get why people think only one wheel will spin.

I was pulling my friend out of a frozen over ditch once in my old jeep. I had it in drive and got out when it was on the ice. all 4 wheels were spinning equally, because they all had 0 traction. Same principle
Old 07-22-2009, 12:18 PM
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Nope. Power is delivered to both wheels unless one looses traction - posi will shift power to the wheel with traction, open diff will shift power to the wheel without traction
Old 07-22-2009, 12:24 PM
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Originally Posted by DaBuzzard
Nope. Power is delivered to both wheels unless one looses traction - posi will shift power to the wheel with traction, open diff will shift power to the wheel without traction
aww man u were soooo close. all true except it doesn't shift power, it locks both axles together

unless ur using traction control, and that would apply the brakes to the spinning wheel and then i guess you could say it shifts power

Last edited by koch1ar; 07-22-2009 at 12:24 PM. Reason: Automerged Doublepost
Old 07-22-2009, 12:36 PM
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Originally Posted by koch1ar
aww man u were soooo close. all true except it doesn't shift power, it locks both axles together
unless ur using traction control, and that would apply the brakes to the spinning wheel and then i guess you could say it shifts power
Picky picky But true, caught with my brains down...need another coffee

Oh, and to the op - what you are calling the "rear subframe" is actually the rear axle assembly, it's a twist beam design. Quite common on lower end fwd's - like every mopar mini van on the road. Cheap to build, lightweight, relatively strong - but not near as nice as a fully independant setup.
Old 07-22-2009, 12:51 PM
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Originally Posted by DaBuzzard
Picky picky But true, caught with my brains down...need another coffee

Oh, and to the op - what you are calling the "rear subframe" is actually the rear axle assembly, it's a twist beam design. Quite common on lower end fwd's - like every mopar mini van on the road. Cheap to build, lightweight, relatively strong - but not near as nice as a fully independant setup.
dude that made me lol. i've never heard that one b4
Old 07-22-2009, 01:27 PM
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Originally Posted by DaBuzzard
Picky picky But true, caught with my brains down...need another coffee

Oh, and to the op - what you are calling the "rear subframe" is actually the rear axle assembly, it's a twist beam design. Quite common on lower end fwd's - like every mopar mini van on the road. Cheap to build, lightweight, relatively strong - but not near as nice as a fully independant setup.
I call it the subframe because that's basically how it was described to me and I said earlier, I've just never seen it before. I'm no mechanic so I wouldn't have seen any of those.
Old 07-22-2009, 01:46 PM
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Originally Posted by ForsakenOutlaw57
One front wheel drive cars, just like rear wheel without posse traction, doesn't only one actual wheel receive direct power from the engine?
An open differential WILL drive both wheels with EQUAL POWER as long as one doesn't have a significant traction disadvantage. If you're pulling with one wheel, you have a serious problem.
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