Thread: D2 Front diff harmonic balancer?

Steve

Might be an obvious question, but have you checked your donut? I had a similar vibration at 90-100km/hr and it was the donut.

Angus

Originally Posted by SteveT

I have just replaced the two universal joints on the rear of my front tailshaft trying to fix a vibration that comes in at 60k up to 80k and is only under acceleration.
Test drive ....no difference
While I was under the car I noticed there is a huge weight (I am calling it a harmonic balancer?) on the rear diff but not the front diff.
I remember my D1 had one on the front and there is two threaded holes in the bottom of the diff.
Should there be one on the front diff and should this fix my vibration??
Thanks in advance
Steve

I have the weight on the front diff ... Not the rear .... But mine is RRC


Also check your engine mounts ... If 1 is cracked ... this will also show up as a strange vibration

And also as McDisco says .... check the front tailshaft

Mike beat me to it. Engine mount - especially if it only happens with right foot down.

On my RRC it happened when turning right and could tell it was from front left, so assumed LH front wheel bearings or CV. Nup, after a lot of time it was just extractors touching chassis rail due to dud engine mount.

HTH, cheers.

Originally Posted by mike 90 RR

I have the weight on the front diff ... Not the rear .... But mine is RRC


Also check your engine mounts ... If 1 is cracked ... this will also show up as a strange vibration

And also as McDisco says .... check the front tailshaft

Dont you mean rear shaft?

Originally Posted by SteveT

I have just replaced the two universal joints on the rear of my front tailshaft trying to fix a vibration that comes in at 60k up to 80k and is only under acceleration.

Originally Posted by McDisco

Dont you mean rear shaft?

I see what you mean .... I saw the "rear bit" & the "tailshaft bit" but failed on the "front" word .... What can I say ... I do have spell check ... Now I need Read check

Originally Posted by SteveT

While I was under the car I noticed there is a huge weight (I am calling it a harmonic balancer?) on the rear diff but not the front diff.
I remember my D1 had one on the front and there is two threaded holes in the bottom of the diff.
Should there be one on the front diff and should this fix my vibration??
Thanks in advance
Steve

Can you let him know about the location of that weight McDisco??? .. Is there one on the front or just on the rear??

D2 only has one on the rear diff

ummm....what is it for?

Thanks i did look at the donut it seemed fine, glanced at the engine mounts will have a better look tomorrow.
I did notice a large dent in the floor pan above the uni joint where it must have let go before making me think the weight was knocked off or not replaced(if it was ever there???)

Originally Posted by scarry

D2 only has one on the rear diff

ummm....what is it for?

Thanks scarry I am under the impression they take vibration out of the driveline? but not 100% sure??