Transmission failure, rear bearings. WHY!
07-20-2010, 11:51 AM
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Originally Posted by Slows2k,Jul 19 2010, 05:16 PM
After verifying with the Manual, The oil pump is driven from the countershaft, which is driven by the secondary reduction shaft when the car is towed in Neutral.
If the car is towed in neutral with the real wheels on the ground the trans oil pump is turning.
If the car is towed in neutral with the real wheels on the ground the trans oil pump is turning.
07-20-2010, 12:44 PM
#14
Originally Posted by INTJ,Jul 20 2010, 11:51 AM
I thought that this car was flatbed only?
The thread came to the conclusion that manual basically says flatbed only due to ground clearance, not for damage reasons. They were discussing issues with the LSD and towing with the rear wheels down, to which Torsen said it will not hurt the LSD. They could not comment on transmission damage though.
07-21-2010, 01:37 PM
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Slows2k Posted on Jul 20 2010, 12:22 AM
Slows2k Posted on Jul 20 2010, 12:25 AM
This looks like a slight contradiction.. no?
I guess the 2 conical bearings that support the sec reduction shaft (yes.. there's also a ball bearing at the end but it doesn't take much load) have to deal with high load and relatively low revs.
They are at the end of the gearbox, all the torque multiplying has been done.
Running the trans oil for too long (= OEM oil change interval - IMO!) doesn't help either.
Run the trans low on oil, the bearings will fail.
The oil pump's pickup is at the bottom of the case. If there is oil in the trans, it's covered.
I guess the 2 conical bearings that support the sec reduction shaft (yes.. there's also a ball bearing at the end but it doesn't take much load) have to deal with high load and relatively low revs.
They are at the end of the gearbox, all the torque multiplying has been done.
Running the trans oil for too long (= OEM oil change interval - IMO!) doesn't help either.
07-21-2010, 03:01 PM
#16
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Originally Posted by SpitfireS,Jul 21 2010, 04:37 PM
This looks like a slight contradiction.. no?
Quotes out of context can be
You can have 1/2 the trans fluid capacity in the trans and cover the oil pump inlet. The trans is still low on oil.
Since we don't know what bearing failed, what the failed bearing looks like, how the car has been used, what amount and type of oil was in the trans this is all speculation
07-21-2010, 05:55 PM
#17
I'm leaning to vibration, I'm running hyperco springs, 14k f/r, spherical bearings, dif mount inserts, very low.. could the prop shaft at a higher angle cause this ?
maybe too much vibration, fluid has always been checked, has seen only 5 track days. honda mtf.
all events have been autocross
maybe too much vibration, fluid has always been checked, has seen only 5 track days. honda mtf.
all events have been autocross
07-21-2010, 07:06 PM
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I agree that not having pictures of the bearing and the shafts makes this all speculation. The factory oil shears noticeably after 10k for me, while that doesn't means bearing failure, it tells me that the OCI is way too long.
My recollection was that the trans pickup was elevated and that there were problems in high G corners. There were several photos that showed the exact relationship and it looked sketchy to me. Was it an AP1 only issue?
My recollection was that the trans pickup was elevated and that there were problems in high G corners. There were several photos that showed the exact relationship and it looked sketchy to me. Was it an AP1 only issue?
07-21-2010, 09:49 PM
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Opc Posted: Jul 19 2010, 04:58 PM
IMO we don't need pictures.
(it would be nice
though!)
Quotes out of context are great fun
They can make you say things you never really did.
This is the interweb you know....
Why would the trans oil pump need a changed pick-up?
Its at the bottom of the transmission, all but submerged in oil (IF there is oil.. that is
)
To change the pick-up would mean a different transmission case, I guess.
pretty much all the rear case bearings are bad. Scoring on the races, however there is no grit or oil issues...
(it would be nice
though!)Quotes out of context are great fun
They can make you say things you never really did.
This is the interweb you know....
Why would the trans oil pump need a changed pick-up?
Its at the bottom of the transmission, all but submerged in oil (IF there is oil.. that is
)To change the pick-up would mean a different transmission case, I guess.