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Diff Ratios Auto Vs. Manual 

 

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 Post subject: Diff Ratios Auto Vs. Manual
Posted: Tue Sep 18, 2007 12:06 am 
Parts Gopher
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Joined: 17th Sep 2007

Ride: EFII Fairmont & F6 Typhoon

Location: Perth
WA, Australia

I have an efII fairmont AUTO :( and am in the midst of a manual conversion can anyone tell me whether i need to change the diff ratios or diff to handle the ratio change from auto to manual... the gearbox i will be using is a t50d... the autobox i will be promptly discarding is the disappointment they call btr93le.. the ratios according to the manual are different only minutely but i would have not a clue as to whether or not they would drastically affect differential life... if anyone can help me i would much appreciate the info... cheers.
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Posted: Tue Sep 18, 2007 12:23 am 
Technical Contributor
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Ride: 2.0 Turbo VW

Power: 142 rwkw

Location: Seaford State:
VIC, Australia

No, You can have what ever diff ratio you like.

Changing diff ratio will adversely affect your speedo reading.

As for ratio as combinations, you either have 3.08:1 3.23:1 or a 3.45:1 in your car.

Most people would say the 3.45:1 is the best for a manual, even I currently run this one, but prefer the 3.23:1.

All in all.. they're simular just more pickup, but with a manual... anything will be better than the auto.

As for strength a higher number would be better for the driveline, but then the parts are moving faster thus wear and noise.


help?

 

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Posted: Tue Sep 18, 2007 12:33 am 
Parts Gopher
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Age: 30

Posts: 55

Joined: 17th Sep 2007

Ride: EFII Fairmont & F6 Typhoon

Location: Perth
WA, Australia

schweet so what ur sayin is that i don't need to change anythin at all in my driveline bar from transfer the speedo sender gear from the auto to the manual...
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