the 06 MR 4th gear output has a different part number than the 05 MR 4th gear output, it is bigger!

 

I believe the "attacking" has something to do with high temps. At room temp I don't believe anything will ever happen at room temps.
The "exact equivalent" thing is only for those paranoid about warranty. The rest of us are more worried about pure protection so running thicker fluid is a non issue.
by how much? a different part number doesn't exactly mean bigger or better, just different. Someone needs to order the parts for a IX (or tear apart an existing tranny) and compare them directly...

 

Does anyone know how we can look up part #'s for internal mitsubishi transmissions? (to compare differences from 03, 04, 05, 06, etc.)

 

so the 06 4th is bigger
did someone compare it
so Im hoping that the 4th gear issue doesnt apply to me then
either way
im going to make a trans cooler setup
so any hints are welcome
time to look into jegs and summit again

 

Here is the parts listing for my trans cooler setup, all part #'s and prices are from Summit Racing, YMMV:

1. Fluidyne Fluid cooler - #FLD-DB-30110 - 4x11x2 - $94.39
2. Tilton Transmission/Differential Oil Cooler Pump - #TIL-40-524 - $178.39

3. Aeroquip Socketless Hose End / straight / -8AN barb - #AER-FBM1513 - $5.95
4. Aeroquip Socketless Hose End / straight / -10AN barb - #AER-FBM1514 - $6.95 x 2
5. Aeroquip Socketless Hose End / 45degree / -8AN barb - #AER-FBM1523 - $16.95 x 2
6. Aeroquip Socketless Hose End / 90degree / -8AN barb - #AER-FBM1533 - $16.95 x 3
7. Aeroquip Socketless Hose End / 90degree / -10AN barb - #AER-FBM1534 - $18.95
8. Aeroquip AN to NPT Adapter Fitting / straight / -8AN Male to 3/8in NPT Male - #AER-FBM2007 $3.95 x 2
9. Aeroquip Socketless Fitting, Union Reducer, Male -10 AN to Male -8 AN / straight - #AER-FBM2163 - $10.50
10. Aeroquip Hose Mounting Clamps, Cushioned, .750 in., Set of 5. / #AER-FBM3486 - $3.69
11. Aeroquip Hose, AQP Socketless, Rubber, Black, -8 AN, 15 ft. Length / #AER-FCN0815 - $48.88
12. Aeroquip Hose, AQP Socketless , Rubber , black , - 10 AN , 10 ft . Length / #AER-FCV1010 - $37.95

Total : $505.25

This is not the final listing as some fittings probably won't be used. I also need to fabricate a bracket for the pump and the cooler itself.

 

Temperature will definitely have an effect.

I think people are too worried about gear oil weight. Its not the only factor affecting lubricity. 75w-85 wt or 75w-90 wt is fine. The GL-4 rating has me more worried. I think there is a trade-off between gear oils that improve synchro life (GL-4) and gear oils that provide better lubricity for the gear teeth (e.g. Redline shockproof).

 

Just because it has a different PN doesn't mean its wider. When I was working with Subaru 5MT transmissions, I would see gears from different model years with different PNs that appeared identical. But a different PN is encouraging. It would be nice if someone at a dealership could compare one of the '05 and '06 gears.

BTW, Mitsubishi doesn't sell the gears on the output shaft individually. This means that if the '06 4th gear is wider, and someone wants to swap out to this wider 4th gear, they are going to have to buy the entire assembled output shaft which is around $1000.

 

I posted earlier about this, A buddy of mine that has a 06 evo 9 MR broken his tranny at 9800 miles! It is currently in pieces right now getting worked on. I saw the internals and where the faliure happened. I believe it had something to do with the shift link between 5 to 6 gear broke and damaged a few gear teeth. However, he had a clutch installed a week previously before the tranny went out. The mechanic concluded that it could have been a defective tranny to begin with. The owner of the evo didn't drive the car hard either or abuse it.

 

that sounds like an isolated event. Any tranny can grenade from a number of different types of failures... For normal use 9or even drag strip use) I doube we'll have any more failures than the 5sd.

The only 6sp failure we're seeing with any consistency is the 4th gear fatigue in the cars that are being driven on a roadcourse.

 

4TH gear failures are what concerns me...we know what MR stands for but I don't want a failure on something it was designed for...I plan on using it for time trials-20-30 minute sessions...does kaaz or ats or anyone sell gearsets for the mr 9s

 

damn pisses me off! that's just as bad as having to buy the whole control arm for $260 to replace the $10 ball joint, just doesn't make sense.

 

if you know the part number you can buy it separately

 

There is no part number that I am aware of. I have spoken to parts counters in the USA and Japan. If you know the part number for 4th gear on the output shaft of the 6MT, please let us know.

 

I posted it in track ****** with MR, it is a coordsport parts list and if you cross-reference the part numbers from what fireball posted, it is actually different.

 

The "yellow" metal is Brass.