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had 607 in my old 03 for over a year, and have had it in my 06 for about 4 months. i love this stuff. my 06 made plenty of groaning/moaning sounds at low speed tight turns, but after putting the 607 in, its completely silent!
Originally Posted by negcamber,May 4 2007, 02:33 PM
Eh...the CDV blows. I'd rather budget rebuilding/replacing the diff every 5-7years instead of putting a CDV in the car.
But if it is the Torsen causing the pinion failures and not the carrier caps (which is what appears to have happened with my car...but who knows...maybe the LSD failing caused the cap and pinion to break)...but if it is the Torsen, then next failure I'll change to a different LSD...Quaife or something.
I had some engineers look at the pics of your diff and they all agreed that the bearing cap looked like a sudden shock failure, while the pinion tooth looked like fatigue failure. They seem to think the tooth broke, and when it got jammed up in the works, it broke the bearing cap. Of course, we will never really know...
I had some engineers look at the pics of your diff ...
Pictures?
Please share
IMO the posts about diff failure have nothing to do with the S2000 diff being weak.
Drag racing and tracking would all mean that one should follow the "super severe maintenance" schedule and/or think about using something else then OEM recommended fluid.
Non proper clutch dumps (high shockloads) are an extreme catagory, IOW there is nothing that can prevent failure.
Be carefull not to jump on the "The OEM Diff Is Weak" bandwagon.
Only if you want to use it as an excuse.
Not sure what caused what...would have been nice to have made it home to disassemble to see what was broken before the catastrophic failure.
But was at an S2k meet when the diff started making noise and Billman took a listen and thought it sounded like the "LSD was hunting". The sound was a faint clunking especially noticable at low speed and while coasting (probably because engine noise is high on my car).
I don't do clutch drops (maybe total of 6 in 6 years of ownership)...but I do upshift very hard when racing. The catasrophic failure happened at a 9k rpm 1-2 shift...one of thousands on my car.
Diff oil was replaced annually using Mobile 1 75-90.
You would have to read the previous posts in this thread. I had put the LE607 in just 1 day before the diff failed. It was the oil that was on hand at the time when the diff first started to make noise...was at the Dragon and HTG happened to have a quart. So I used that so I could check for chunks & metal in the old oil. The old oil was clean, but the diff failed a day later.
Prior to that, it had always been refilled with Mobil 1.
Thanks for sharing negcamber
It looks like the chainsaw masacrereloaded
And who's mechanic # 3?
Sue him!
negcamber Posted on May 5 2007, 01:14 PM
Not sure what caused what...
SC_Highlander's conclusion sounds pretty reasonable.
To break a bearing cap like that would take a huge impact force.
If the part of the bearing cap (the one that you hold) still has a perfect cylindrical shape and fits perfectly around a bearing it wasn't bend and that suggests impact causing failure too.
Were the bolts still torqued down/tight?
The outer bearing race wasn't cracked?
It's too easy to blame this on the Mobil1 75W-90.
On the track I would not use it anymore though.
(to be honest I would not use it at all, the Amsoil 75W-110 specs seems like a very good alternative for cold climates)
05-04-2007, 11:41 AM
