vibrating noise in clutch mechanism until i depress clutch?
 

hi guys and gals

i have just replaced all my gearshift bushings, and can report that it does indeed make a substantial difference to the feel of the gearshift. i haven't yet refilled the transmission with swepco so am still waiting for the 'full effect'!

anyway, while i was testing it i noticed a vibrating noise, as if something was loose. this stops when i depress the clutch.

to tell you the truth i think this noise may have been there before i rebushed, but since i was always wacking on the stereo as soon as i got in the car i didn't pay it any attention...

the gear shift is good, i made sure i relocated the coupler in exactly the same place.

just thought i'd ask the oracle before getting back under the car.

any thoughts would be most welcome.

regards

justin

ps. thanks to everyone for the help on the oil pressure switch oil leak, i think i have cured that one now.

Check the clutch adj. Also, check the max travel of the clutch cable back at the gear box. The spec is ~25mm

Justin,

Did you install 914 or Weltmeister bushings in the coupler???

If so ... more noise transmitted through the shift rod is the price you pay for a tighter feeling shifter!

The 'new' noise you hear now may be perfectly normal ... one of the noise & vibration components the factory was isolating from the cabin by putting the elongated slots in the OEM coupler bushings!!!

Could be throw out bearing.

How many miles on the car?

Original clutch?

Does it get quiter when the tranny warms up?

Scott

the clutch is fairly new ie within 20,000 miles. i'll have to take it for a spin and see if it gets quieter when warm.

in the meantime, i could check the clutch cable adjustment.

as for which bushings i used, i have no idea, they came from a dedicated 911 spares shop, but that's all i know.

many thanks

justin

Justin,

I don't believe the OEM 911 bushings are available as separate replacement parts ... just as a complete coupler.

If the noise persists ... you may want to put the car up on jack stands and run the engine with the transaxle in neutral while you use a mechanic's stethoscope [or long screwdriver or wooden dowel] to probe around the transaxle for the noise source.

that's exactly what i was hoping to avoid!!!

i've done my share of lying under the car recently, anyway, tomorrow i'm taking it for a long test drive, so will do some more monitoring then and post up any findings.

thanks

justin