Installed 4.57R
#11
Originally Posted by Wisconsin S2k,May 11 2006, 12:14 PM
i edited my post.
the output shafts do get put into the new diff. however, i think it's a moot point since they will not necessarily be the same position they were in the old diff.
as for getting the two to match up, can just those tiny half shafts really cause a vibration just because they aren't mated up the same way? FWIW mine and Keith's were never marked and they turned out ok.
the output shafts do get put into the new diff. however, i think it's a moot point since they will not necessarily be the same position they were in the old diff.
as for getting the two to match up, can just those tiny half shafts really cause a vibration just because they aren't mated up the same way? FWIW mine and Keith's were never marked and they turned out ok.
It would not be unreasonable to foresee that with a certain output shaft mated to a certain 1/2 shaft, that balance can be unique and critical. It is quite possible that in the OP's case, this could indeed have such a consequence. We use CVs because the angle of power transfer can alter and change at all times. CVs can wear in a particular way (wear patterns), developing grooves and nicks at specific places. If you rotate the orientation of 1/2 shaft to output shaft, new pressure points may be developed in the CV and we all know that a bad CV can be responsible for weird sorts of vibrations.
I did my gears relatively early my car's life, however, if someone were to do it later when the car's CVs have developed deeper wear patterns, I can see where altering this can produce adverse effects.
#12
Clarifications:
The diff comes from Stratocaster / Ricks complete with flanges, so it doesn't matter where I marked my old diff for halfshafts or propshaft (and I did mark them). It doesn't seem to change when I turn / on gas / off gas / clutch in / clutch out-- so I'm hoping rotating the propshaft will cure and / or change the speed at which the vibration occurs. It feels exactly like my Jeep cherokee did with a bad u-joint.
Will update as soon as I give it a shot. Thanks for all the posts so far!
The diff comes from Stratocaster / Ricks complete with flanges, so it doesn't matter where I marked my old diff for halfshafts or propshaft (and I did mark them). It doesn't seem to change when I turn / on gas / off gas / clutch in / clutch out-- so I'm hoping rotating the propshaft will cure and / or change the speed at which the vibration occurs. It feels exactly like my Jeep cherokee did with a bad u-joint.
Will update as soon as I give it a shot. Thanks for all the posts so far!
#15
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Do you feel the vibration on the bottom of your seat? If so, I would also check the pinion angle. Not sure if it plays on the S, when I lowered my Lightning it was very noticable.
#17
I also have this same exact vibration and rumble noise with the new 4.57's. The gears and diff came from Ricks, and the whole assembly was swapped out by a local Honda shop. This particular shop has an S2000 guy too, if it makes a difference. Let us know how you tackle it and what works.