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Final Drive Interchangable?


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#1 luismx123

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Posted 02 February 2020 - 01:12 PM

hey all

I got my hands on a 3.44 FD pre A+ crownwheel and want to install it on my 1990 A+ gearbox with a minispares x-pin diff.

Do i need to get a pre A+ pinion too or does it fit with an A+ pinion, or will a pre A+ setup (crown and pinion) not work at all on my new X-pin diff and A+ gearbox?

thanks

#2 DeadSquare

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Posted 02 February 2020 - 02:31 PM

hey all

I got my hands on a 3.44 FD pre A+ crownwheel and want to install it on my 1990 A+ gearbox with a minispares x-pin diff.

Do i need to get a pre A+ pinion too or does it fit with an A+ pinion, or will a pre A+ setup (crown and pinion) not work at all on my new X-pin diff and A+ gearbox?

thanks

 

 

YES. "Crown wheel & pinion" means a matched pair, 'crown wheels and pinions' is generally taken to mean assorted cogs.

 

You need a matching pinion to go with your recently acquired crown wheel, what ever set up you have, X pin or bog standard.


Edited by DeadSquare, 02 February 2020 - 02:45 PM.


#3 luismx123

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Posted 02 February 2020 - 02:41 PM

 

hey all

I got my hands on a 3.44 FD pre A+ crownwheel and want to install it on my 1990 A+ gearbox with a minispares x-pin diff.

Do i need to get a pre A+ pinion too or does it fit with an A+ pinion, or will a pre A+ setup (crown and pinion) not work at all on my new X-pin diff and A+ gearbox?

thanks

 

 

YES.

 

yes to what?



#4 Rorf

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Posted 02 February 2020 - 03:50 PM

I think he answered your question O_O



#5 Moke Spider

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Posted 02 February 2020 - 04:48 PM

The Helix Angle and Tooth profiles were different between A and A+ in final Drive Gears, so, YES you will need an 'A' type Pinion.

 

The 'A' type were plain where as the A+ had 'line' ground in across the tips of the teeth to make them easier to distinguish.



#6 luismx123

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Posted 02 February 2020 - 05:02 PM

The Helix Angle and Tooth profiles were different between A and A+ in final Drive Gears, so, YES you will need an 'A' type Pinion.

 

The 'A' type were plain where as the A+ had 'line' ground in across the tips of the teeth to make them easier to distinguish.

perfect thank you. the answer I was looking for!






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