Got the shakes at 80ks plus

Discussion in 'Technical' started by geo, May 15, 2006.

  1. geo

    geo New Member

    Hey Guys new member here looking to get my first Z and was looking at one that gets the shakes at about 80 would this be a tailshaft bearing and is there a way to be sure ?
     
  2. rob260

    rob260 Administrator Staff Member

    Hi mate couple of things

    OK to start cheap and simple and work from there...

    1)Are tyres balanced and aligned? Can be checked at a tyre shop

    2)Tyres out of round? This can be checked by a mechanic or tyre shop on a hoist

    3)Unforunately the most likely candidate; tailshaft centre bearing. This can be checked with the car on a hoist, look for sagging. While you're at it make sure the heat shield is in place between the cats and the tailshaft, I know of (mine included) a couple of bearings that failed prematurely due to no heat shield (cats get very hot!).

    4)Bad unis. Unfortunately nissan made the 2-piece tailshaft with non-lubeable, non-replaceable unis. The best alternative here is to go to a lightweight single piece shaft which these days can be found for around $400-$500 if you're patient. I bought some from NYX in the US a little while back as price to get one built was $550ish back then, but there seem to be lots of AUS suppliers (CRESTA etc) with decent prices at the moment. I think some members have had success rebuilding their 2-piece but I'm not sure.

    Anyway hope that helps. Where abouts are you in VIC? Someone will be able to give you an idea of some decent Z shops near you.

    Also can you tell us more about the vibration? Where do you feel it? Where is it coming from?

    Also be prepared for the fact that there may be more than one contributing factor so don't be dissapointed if you end up changing a few items. When i had the same problem the first thing I did was the bearing (as it was rooted), still there so I changed one of the tyres that was out of round, still there so ended up doing the tailshaft and no vibrations!
     
  3. CrestaJohn

    CrestaJohn NEW 'OEM' PARTS

    Welcome geo. Yep, sounds like centre bearing and/or unis.

    Is it a 2 seater or 4 seater turbo/non turbo, man or auto?

    I have a new 1 pce shaft here with new unis etc that will take the shake right out. It is for a 2+2 Turbo Auto. $395

    Cheers
    john
     
  4. rob260

    rob260 Administrator Staff Member

    Yeah if you have the cash now just get a 1-piece first up

    lighter, stronger, and you can almost guarantee that you will need it eventually anyway...
     
  5. black baz

    black baz black 'n blue Bazemy

    welcome geo ... looks as if the zed you are interested in has a very

    common problem .. the advice in this thread is all good .. but based on you already owing the machine .. the all up cost to purchase a one piece and have it fitted will be around $700-$750 .. so use that figure as a base to reduce your purchase price if you decide to go ahead with this particular zed .. good luck with whatever you decide to do ...:LOL::LOL:
     
  6. geo

    geo New Member

    the advice sounds good thanks

    its a 2+2 tt manual and that figure you say black baz
    sounds like a good bargining tool.
    It feels like a body shake not really wheels but then i am not an expert.
    Can this be done at home by the inexperianced z guy,I have pulled out engines and gearboxes out of holdens with my son but never worked on a z.
     
  7. rob260

    rob260 Administrator Staff Member

    Maybe get it done at a shop if this is yuor first time working on the Z

    I've done engine swaps etc in older cars and the Zed is alot harder to work on as there's alot of "stuff" in there...

    Although I don't think tailshaft replacement is that involved so maybe you should have a read of the manual (available online in our tech section) and see if you feel up to it?
     
  8. any_old_id

    any_old_id New Member

    I had the same issue. In my case it was # 2 - Tyres not round......Seems the previous owner had it sitting around a little....

    How to test
    (Obviously take care doing this!)

    * Jack up back of car onto stands
    * Get a bucket of water and brush of some sort
    * Start car, put into gear so wheels are turning slowly (Mines manual, so first gear at idle)
    * Wet brush and **gently** align so it's **just** touching the tread area of the tyre.
    --> If it's round, it'll be wet all over.
    --> If it stops touching part way around your tyres aren't round.

    Cheerio.

    Simon.
     

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