FlyYellow

well i figured out what happened to my clutch....

i removed the breather tube into the tranny casing. It was extra weight afterall and i've read how several people here removed the tube as well.

In my case a rock or something got into the tranny casing through the breather tube, after which it proceeded to make clutch salad. it froze the pressure plate, took of some of the fins of the tranny, damaged the bolts and just created an overall mess.

i now fixed my problem by adding an aluminum mesh screen on that hole!

What bad luck. I know it's never happened to anyone else and lightning never strikes twice in the same spot. Well i thought i'd share my experience in case anyone else wants to avoid an unnecessary expensive failure.

SIGH....


Boris

JasonAndreas

The 993 transmission bell-housing is partially sealed and that breather tube is actually meant to help cool the clutch disc. You should consider reinstalling it!

irisblue

I agree refit the cooling tube and it really doesnt weigh that much compared to some other stuff...

AOW162435

Boris,
What a mess! Are you refering to the short plastic tube or the clutch vent setup that leads to the airbox?

Andreas

993inNC

I thought its task was to pull clutch disk dust from the bell housing via the suction of the intake ai rbox? Something that makes no sense to me.....why you would want to infuse the possibility of foreign matter into the air box.....
I removed mine long ago and even after track events have had to issues.

FlyYellow

yes i'm refering to the tube that goes up to tube that connects into the air intake.

My understanding was the same as Chris' in that it is suppose to carry out clutch dust and not really be a venting source. But i also gathered this information from the board - so i'm not knowledgable on this.

gonzilla

While I agree in theory that you'd obviously want the cleanest air possible entering the airbox, isn't the filter's job to filter out foreign particles entering the intake??? Is the sucking of the dust so important that you'd want to have dust flying into the airbox??? I've always wondered how much good that whole system of vacuuming dust out of the trans did. On a side note, is the breather tube's main job to evacuate clutch dust or to cool the clutch off???

Mark in Baltimore

I thought the reason the tube went into the air filter was to reduce dust emissions because that filter sure seems to get dirty from the clutch.

JasonAndreas

If you go back to the original launch material, "Impeller blades inside the pressure plate draw fresh air in; the hot air exits through exhaust stubs in the bell housing into the engine air filter, with engine vacuum assisting." The original Service Techniks for the 993 (I don't have them) might/should give a better description of the cooling effect.

JM993

Makes you wonder who in their right mind would want to introduce hot, dirty air into the intake tract - even if it is filtered.

I removed mine a long time ago and (knock on wood) have never experienced any issue. Think I'll take my chances......

scat

Dust emissions from clutch are not mandated by the feds ,so I agree with Jason the tube it was made there to cool the clutch .
Very smart idea,just change the air filter as recommended by Porsche.