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Old 06-05-2010
till till is offline
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Default 9.5 gearing

hey guys,
iīve bought a used car and i have no idea wich gearing to use.
I got the 81 and the 87 potion gear ( is that tha right word ??)
i want to drive a 9.5t motor from GM.
Du you have any experiences ??

Pleas help me out !!

cheers
Till
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Old 06-05-2010
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coolcars782 coolcars782 is offline
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With the 81 spur i would aim at a 21 pinion and for the 87 spur gear i would use a 23 pinion.

Carl
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Old 06-05-2010
till till is offline
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ok thanks .... iīm gone try this next WE
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Old 06-05-2010
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With the bmax4 your aiming for a final drive ratio of about 9:1 - To work out a ratio you have to divide the spur gear by pinion then times by the internal gearbox ratio Spur / Pinion * Gearbox Ratio


Carl
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Old 06-05-2010
CODMAN CODMAN is offline
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The 87T/23T is going to be a hard fit due to the cam style motor mount. Definetly go for the 81T/21T Carl suggested (that will fit) and then take it from there...

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Originally Posted by coolcars782 View Post
With the 81 spur i would aim at a 21 pinion and for the 87 spur gear i would use a 23 pinion.

Carl
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