cluncking back end

mrzed

Club Member
hi guys , i have a noisy cluncking noise when reversing and then setting off in 1st gear and in second when accelerating and decellerating ,
it is not as noticable when in higher gears ,it is a 74 260z
could this be universal joints?
any ideas anyone
cheers jay
 

jonbills

Membership Secretary
Site Administrator
I think with UJs you'll have clacking in all gears - I'd think more likely something like a gearbox or diff mount, or poss even movement in a control arm.
 

mrzed

Club Member
hi Jon , just been for a ride in it and it is in all gears ,when giving it gas then letting it off then back on ,
it has always been noisey but im sure its getting worse , louder
 

toopy

Club Member
Might be worth doing a cursory spanner check on all the major bolts/nuts in case something has gradually loosened over time :)
 

Stockdale

Club Member
hi guys , i have a noisy cluncking noise when reversing and then setting off in 1st gear and in second when accelerating and decellerating ,
it is not as noticable when in higher gears ,it is a 74 260z
could this be universal joints?
any ideas anyone
cheers jay

Diff clunking is not unusual in Z's. I experienced it in all my earlier cars (240z and 260z 2+2) used in the late 1970's and experience it still in my current '74 260z. Unless its extreme or sudden onset then just don't worry about it. If it's there then it probably has alway been any is unlikely to get worse for a very long time. Engineering tolerance was very different when these cars were made (points were set by around the thickness of a fag packet and worked fine). Enjoy the car and the noise alongside a bit of gear whine, whistling around the windows, the 'wow and flutter' of radio caroline and very may rattles. Its what helps make older cars so endearing.
 

Wyn

Club Member
Assuming none of the prop/drive shaft uj's are worn out go for the front diff mount imo
See if you can "lift" the front of the diff when under the car ?
Unless been replaced its probably knackered by now
New std will be fine. Fink you can still get them
 
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