AWD Trans Rattle/Noise

**DrGonzo** · 07-13-2011, 10:59 PM

So I have been prone to the notorious trans rattle. My first though was the throw out bearing. Picked up a brand new one swapped it out and the rattle is still there. At a local meet I spoke with Chris "Ninja Performance" and he said it sounded like the input shaft bearing. Made sense so I picked one up from GZP, dropped the trans again to swap out the bearing. Needless to say both the old throw out bearing and the old input shaft bearing looked fine when removed.

Guess what! the damn noise is still there...WTFH!!!!

So I am getting annoyed that I have dropped the trans twice and replaced to perfectly good parts and the damn noise is still there.

I have checked specs on all bolts, Flywheel was resurfaced and clutch is new OEM. It usually goes away when I push in the clutch which lead me to believe the throw out bearing.

So my question to everyone that has had this issue, how did you get it fixed??

Any other ideas what could cause the rattling noise?

**HellBringer** · 07-14-2011, 08:10 AM

Fact of life - they all do it - accept it and move on. Some are louder than others, but every 5sp car I've owned has done it. I contribute it in part due to the lack of a pilot bearing on the input shaft. In some cases the noise is exacerbated by the clutch hub springs rattling around like a tambourine.

**TwIzTeD_3kGt** · 07-14-2011, 08:14 AM

I think it was Ray or Matt who found the center hub of the stock clutch rattles.

What clutch you running?

**DocWalt** · 07-14-2011, 09:11 AM

I think nearly every Getrag rattles. Mine was really loud at times, and other times it was nearly silent. Tried a lot of different fluids, but I ended up back with the MTL/MT90 mix (MT85 replaces the mix)

**Ray Pampena** · 07-14-2011, 09:14 AM

yea most of the noise is from the clutch disk hub. it rattles inside the disk. there used to be a tsb on it when i worked for mitsu. ive noticed some clutches do it way more than others

**Chris@Rvengeperformance** · 07-14-2011, 11:47 AM

it is odd, but of all the issues I have with my trans it doesn't rattle at all. I'm a little worried to rebuild it.

**DrGonzo** · 07-14-2011, 12:34 PM

I'm running just an Exedy OEM replacement clutch right now. Never had issue with them in any of the other cars I installed them in.

So far is sounds like the consensus is that it has something to do with the clutch disk so I'll go with that "especially knowing Ray and Matt looked into it" I was just worried it is something internally with the trans. I'm in no place to do a trans rebuild at this time...LOL

Thanks everyone!!