[ampegor]

Hi All,
I hope someone in here can answer a couple of off the wall tech questions.

I have a problem with the front diff on my 05 TRV. ( actuator and lots of miles)

I recently picked up a front diff from an 07 FIS 400 auto. It is complete and in excellent shape complete with axles and drive pinion assembly.

I would like to put this in my TRV - to gain diff lock and its easier than rebuilding mine.

My diff is 3.6:1 ratio as far as i know. and I think the 400 is 4.00:1 - I understand the ring gears are the same and cat used the pinion to change ratios.
First big question:
Can I just use the 10 tooth pinion in my old diff to make the new one it 3.6:1 ??

The axles that came with the 400 diff are in great shape but are the wrong end for my 05trv spindles/knuckles.

Second Big question:
Will the outer CV's from my 05 axles fit the 07 axles ( they are good shape)

FYI i am a mechanic and the work is not the problem - I just am not sure if the parts physically fit.
Thanks in Advance for all help.
Andy

 

[doorfx]

10 tooth pinion 36 tooth ring gear gives you 3.6 ratios so yes you could.
It’s been a really long time but I believe that yes you can swap the axle ends. Check both ends!!! The 2005 was a year unto itself. Lots of things like muffler , axles, diff were only on the 2005.
look through the pinned section on this site and do a search. Lots of good info in the archives.

 

[ampegor]

10 tooth pinion 36 tooth ring gear gives you 3.6 ratios so yes you could.
It’s been a really long time but I believe that yes you can swap the axle ends. Check both ends!!! The 2005 was a year unto itself. Lots of things like muffler , axles, diff were only on the 2005.
look through the pinned section on this site and do a search. Lots of good info in the archives.

Thanks, I have been searching and know the axles are different. I just want to use what I got ( the 2007 parts) as they are in primo shape. The bike is at my camp and hour away and the parts are here at the house so I figured asking could not hurt.

Also would you ( or anyone else) know if the axles are the same spline ect on the diff end from 05-to 07?

 

[Farrix]

I'm not sure, might be easier to find the right hubs for the 400 axles.

 

[doorfx]

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