Really dumb question

[Keyan]

Are the 6 speed and 5 speed 25-spline shafts actually different? I thought they were the same shaft. I installed a Output Shaft Seal into a 6 speed trans, And I just checked on supercar, and there aree 3 options available, not 2. So the 6 speed uses a different shaft AND seal than the 25 spline 5 speed?


Might explain why its fricken leaking on me.

[Chris@Rvengeperformance]

Hmm not that I know of, check ninja and 3sx.

[Chris@Rvengeperformance]

http://www.ninjaperformance.com/mitsubishi-oem-awd-spline-output-shaft-seal-p-21783.html?osCsid=91227dbed5f66d8df17ee5d1b64755ce

[Keyan]

ugh. well the story is that i bought a "92-93 25 spline" output shaft seal. originally bought it for my 5 speed. ended up buying a jdm 6 speed. installed the seal in that trans instead, taking all the care in the world to make sure it seats properly. and its leaking about a drip every 30 seconds. my trans is going to be empty soon.

I must have somehow fucked up the seal putting it in. I ordered a new one already. And new fluid.

Shit like this makes me want to get a new car

[KeithMac]

Did you fit the seal first then the output shaft?.

Maybe worth oiling the inside of the seal and the output shaft next time if you didn't last time.

[Keyan]

yes i fit the seal to the bellhousing and then slide the bellhousing onto the shaft as carefully as possible. I am really not in the mood to drop the entire trans out and a thread on 3si says its possible to the do the 6 speed output shaft seals with the trans in the car. so i may try that. i am really not in the mood to take the entire trans back out and pull the bellhousing again.

[Chris@Rvengeperformance]

Yeah, I actually install it after the bell housing is in, hard to get in straight, but you can mind the splines easier.

[Keyan]

on a 6 speed right? because the 5 speed has a lip?

[Chris@Rvengeperformance]

Yeah six speed and 18 spline can be installed that way

[Keyan]

thank god x1000

[RealMcCoy]

You can't get the seal by the flywheel on a 25 spline. You need to either pull the shaft, or loosen the trans from the engine a bit to get clearance.

BTW, the difference in the factory 25 spline shafts was in the length of the spline. The 6 speed was slightly longer. It fits into the 5 speed, and as far as I know the only one made by the aftermarket sources.

[Keyan]

either way is better than completely dropping the trans again