Hi

I have a vibration in my car from 60-80 km/h.

Very distinct in this interval, nothing outside.

New balanced tyres.

New flex-coupling.

No differance with clutch engaged or not.

No difference acceleration or not.

Any good ideas guys?

It takes a bit of the pleasure out of my cruising...

__________________
1972 MB 280SE 4.5 75k miles sold
1971 MB 230/8 60k miles sold
1972 Volvo 142 60k miles sold
1969 Opel Rekord 1900

Drive 80+?

It sounds like one of two things.....

You have lost a balance weight from your driveshaft. If you look at your driveshaft closely you will see some small flat curved bits of steel that are glued to it. Those are balance weights and they are glued on, not welded. If one comes off you will get a vibration just like you are describing.

Or you are needing to replace your carrier bearing. The bearing itself is on your driveshaft but it rides in a bearing housing which is sometimes referred to as a Spider. The bearing wears out and starts to tear at the Spider and that will also cause vibration, but usually only on acceleration.

You might have your driveshaft checked by a shop that can balance it. Once you have it out go ahead and replace your carrier bearing and housing since a two piece driveshaft is always balanced as a unit.

If you have a three piece driveshaft, and some 114's do, then you will have two carrier bearings and you will need a shop with a very special piece of equipment to balance your driveshaft. Most shops can do a one or two piece but few can do a three piece. But they are out there; you will just have to find one.

Do you feel the vibration in the steering wheel or in the seat? What does the shifter do when the vibration happens?

__________________
1968 230S Automatic
1985 300TDT- Now Adriel's
1982 300TDT
1975 O309D Executive Westfalia Camper Bus
1972 280SEL 4,5
1966 VW Type 34 "Grosser" Karmann-Ghia
1963 VW 1500 Variant
1974 VW 412 Variant- the "Edsel"
2001 E320 4Matic Wagon- Our belated welcome to the 21st century!

I have never seen a driveshaft with glued-on weights - not even MBZ. They´re all spot welded on.

__________________

Don't Chrome them; polish them

Hi

It feels all over ;-)

Will check next drive.
Going to India for 3 weeks working, will have more time when back.

Maybe easier to exchange driveshaft then balance it?

If I can find a good one.
Actually, I would like to change to a 5 shift transmission too..

__________________
1972 MB 280SE 4.5 75k miles sold
1971 MB 230/8 60k miles sold
1972 Volvo 142 60k miles sold
1969 Opel Rekord 1900

Nope. Because I have seen them fall off when replacing the Carrier Bearings. I always do it in a clean area so I can hear them hit the floor. You can easily see the little square area on the driveshaft since it is a different shade than the rest. And all it takes is brushing them with your hand.

Then I super glue them back on.

Because that's the way they were put on to begin with.