I am hoping someone who has done this before or is a parts guru will make my question very easy to answer......
Some background. We purchased a 1991 NSX auto to use as the base for our racecar. We had a 5 speed manual box we had purchased from the USA and was told that it was a straight swap out alignment wise for the auto.
Once we swapped the gearbox out it was all good, but then we went to put the right side driveshaft in and it wouldn't reach the gearbox and was out by about 20mm or more from where it needed to be. Then I looked at the drive shaft support hanger that comes straight off the engine block and it had AT stamped in it. Assuming this related to Automatic Transmission, I enquired and found out there was in fact a manual version and automatic version of this bracket so we sourced a manual one and fitted it.
It seemed to work, however once we filled the gearbox with oil (brand new seals all through) we had a major leak through the right side seal. It turns out with more investigation that although the driveshaft looks like it fits, it is in fact about 5mm, maybe 10mm short of actually sealing properly. The driveshaft literally touches the edge of the seal, but doesn't reach inside it to actually seal and this is where the leak is coming from !!
So my question is............ is there a difference between the right side driveshaft on manual and automatic cars ??? We assume so given what I've described above, but it would be good to know for sure so I know what I need to source to resolve the issue..........
If there is in fact no known difference between the cars then we're going to have to do some more hunting to try and figure out how we have ended up at this point....... !!
Any help is much appreciated ! This is now the only issue holding us up from tuning the thing so it's a bit annoying if I have been given bung advice !
Some background. We purchased a 1991 NSX auto to use as the base for our racecar. We had a 5 speed manual box we had purchased from the USA and was told that it was a straight swap out alignment wise for the auto.
Once we swapped the gearbox out it was all good, but then we went to put the right side driveshaft in and it wouldn't reach the gearbox and was out by about 20mm or more from where it needed to be. Then I looked at the drive shaft support hanger that comes straight off the engine block and it had AT stamped in it. Assuming this related to Automatic Transmission, I enquired and found out there was in fact a manual version and automatic version of this bracket so we sourced a manual one and fitted it.
It seemed to work, however once we filled the gearbox with oil (brand new seals all through) we had a major leak through the right side seal. It turns out with more investigation that although the driveshaft looks like it fits, it is in fact about 5mm, maybe 10mm short of actually sealing properly. The driveshaft literally touches the edge of the seal, but doesn't reach inside it to actually seal and this is where the leak is coming from !!
So my question is............ is there a difference between the right side driveshaft on manual and automatic cars ??? We assume so given what I've described above, but it would be good to know for sure so I know what I need to source to resolve the issue..........
If there is in fact no known difference between the cars then we're going to have to do some more hunting to try and figure out how we have ended up at this point....... !!
Any help is much appreciated ! This is now the only issue holding us up from tuning the thing so it's a bit annoying if I have been given bung advice !
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