Sten

Evening all,
I was in my local independant Porsche Specialists, he has a customer's 1990 C4 in - apparently the car made a crunching noise and then refused to move. Recovered on a low loader, he's taken out the engine and gearbox, and stripped the box to find that the Planet Wheel Carrier has exploded, breaking the Clutch Sleeve in half! There's an awful lot of teeth and assorted metal debris in the bottom of the box. The Planet Wheel Carrier alone is £1200 to replace, this is the second one he's seen within six months. Has anyone had a similar experience?
Barry

JasonAndreas

What is a planet wheel carrier? Nothing really familiar looking popped up on Google, is this British slang for a rear-differential?

DaveK

It's not British slang for anything I know of.

I was a bit surprised that there was a major part of the engine I'd never heard of before.

If my mechanic told me my Planet Wheel Carrier had failed, I'd be moving my car somewhere else!

JasonAndreas

I should have searched PET before asking, Porsche calls it a "Planet Pinion Carrier" #964-339-015-22

Pesty

never heard of it. what the hell does it do? and tell me i havnt got one on my c4

CraigyB

Sounds like the terminology used in automatic trannys, so this is presumably a tiptronic gearbox which is being reffered to .

DaveK

Ah - guess it's German slang then!

Sounds like you'd better hope you do still have one on your C4!

robmug

Surely it'll be cheaper to find a 2nd hand gearbox...

Sten

Sorry guys - it's a manual gearbox, and part of the PDAS system that controls the ammount of torque transferred - when you activate the diff locks, this part of the gearbox does the locking (C4 only).

Colin 90 C2

I guess that's another reason to get a C2.

Pesty

Please tell me this is very rare

seriously I worry enough about things going wrong when Im away from the car sometimes I wonder if I did the right thing buying it. Until Im driving it again that is.

Dunasso

There was something really wrong with my C4. It made a grinding noise when the car was being moved around. I did not know what it was, and now I have a pretty good idea. I guess I'm glad I got rid of it; the person who bought it didn't seem to be disturbed by the noise. Oh well, it's not like I made any money off of it, but it does seem as if I saved some.

Thanks Barry

greenjt

Yeah Duncan, that's all well and good, but more importantly who's the babe? Inquiring minds want to know!

Dunasso

My wife.

greenjt

Very cool picture. I think my wife would laugh at me if i told her i was going to take a pic of her and my C2.