Re-Build or New Gearbox

Discussion in 'Technical' started by Ns-Zed, Mar 17, 2014.

  1. Ns-Zed

    Ns-Zed Member

    Just wanted to see if anyone has successfully rebuilt a pre 98 manual gearbox to get smooth changes and no grind in any gear when accelerating.

    My current box has a slight grind, nothing over the top, but I am obsessive about a smooth drive so I want to do something about it.

    I know I can source a new box from CZP, but is re-building my current box a viable option and will I get a good result for less than the cost of a new box from Coz.

    Any help appreciated.
     
  2. 8300zx9

    8300zx9 Active Member

    Weeeelllll you kinda have the wrong Z then... A manual Z and smooth ride don't belong in the same sentence.

    They have soft syncro's so are prone to be grindy. Rebuild could cost say 2.5k(?)
    Shipping a gearbox from the states would sting you a lot! As a gauge, I got a quote from them to ship over a subframe and that was $600! It weighs nothing like a gearbox.

    If you want a smooth drive go auto ;)

    If you want to rebuild... See if you can fit the 98'+ syncro's in fir longevity.

    If you want to be silly about this, buy a brand new 98'+ gearbox ;)
     
  3. rob260

    rob260 Administrator Staff Member

    Where do I start with this???

    First up provided you can drive it is perfectly possible to have a smooth ride with a manual trans and provided your components are in good shape shifting is smooth and quiet too. Plus if is a hell of a lot more fun to drive and you don't have to be embarrassed whenever you congregate with other zed owners.

    A rebuild costs around $1500 and a newly delivered still in the box '98 model gearbox is around $2100USD to your door. Having done both I can assure that shipping a new gearbox is much better value than rebuilding an old one.

    You can't retrofit late model synchros to early model 'box.

    Silly would be dishing out advice when you haven't done your homework ;)
     
  4. 8300zx9

    8300zx9 Active Member


    All you did was say what I said in a different way.... :rolleyes:
     
  5. kakaboy

    kakaboy New Member

    :rofl::rofl::rofl::rofl::rofl::rofl::rofl::rofl: :br::br::br:

    Some very valid points :p
     
  6. 8300zx9

    8300zx9 Active Member

    People have certain things for certains reasons....who says you will be embarrassed when you go to car meets in an Auto??? For what reason? If one wants to have a cruiser and a smooth drive then one would buy an Auto to cruise about in. Not a clunk and grind about old fashion manual....your statement is an assumption apon ones decisions.

    Just because you're all scared you'll feel lesser of a man and judged apon by so called social society just because you drive an Auto doesn't mean everyone should feel that way...It just means you all must live pretty insecure lives and follow the "boy-racer social" acceptance :rolleyes:

    I mean get with the times... I struggle to see any super car or sports/performance cars these days with manual gearboxes. In fact, the V8 supercars aren't even using Manual gearboxes anymore, they are sequential triple clutch transmissions (yes with a clutch pedal, but purely only used on down shifts...if they want). I'm not comparing to the Z's auto of course, just saying manuals are sh!t and no one uses them anymore.

    I love the Auto Z. Manual mode or Auto mode (w/SAW kit). It's more of an all rounder... Exactly what I want. Cruise on the highways, city driving or twisties. Tell me how that's at all bad or embarrassing? It can shift harder and faster than any lead footed ape piss fartn' about swapping gears.

    Hmmm actually I know why you like manuals sooo much... You just love grabbing that knob hey! ;)

    Soooo.....Invalid points for invalid reasons.
     
  7. QLDZDR

    QLDZDR ID=David

    Cam I think Rob was referring to being embarrassed by crunching the man gearbox and then having to use either "whoops my bad" or "damn soft syncros" excuse.

    I didn't get the impression that it was targeting anyones 'man vs auto' chip on their shoulder.

    ....... and yes we know you have a SAW :p I am jealous (bring me one back from Seattle please)
     
  8. 8300zx9

    8300zx9 Active Member

    Not sure mate but that's how I read it... I'm sick of hearing the whole manual is better thing...it sh!ts me up the wall!!
     
  9. TWIN TERROR

    TWIN TERROR Well-Known Member

    The first thing to do if you have a grindy gear change is change the 20 year old oil :eek:. If that doesn't make a huge improvement then go looking for another box.
    Oh and real sports cars have manual gear boxes :br::rofl:
    Cheers
    Dave
     
  10. QLDZDR

    QLDZDR ID=David

    [​IMG]

    because I would get in big trouble if I posted a different picture.

    Like I said, bring me back a SAW and we will be No-stick/No-turbo buds :D
     
  11. rob260

    rob260 Administrator Staff Member

    Nope, definitely bagging the idea of converting manual to auto in anything but a dedicated strip car... Also shift at will is Swedish in origin :D
     
  12. 8300zx9

    8300zx9 Active Member

    Yes very true ;)


    I wish I could mate but there's not many of them about....for sale that is ;)
     
  13. 8300zx9

    8300zx9 Active Member

    Swedish by origin, Swedish by design, Sweeeet by nature :br:

    Ain't no comparing any Z variant to a SAW Z.... Unless you happen across enough money to stick a sequential in...

    I need to do a twisties run with a GoPro so I can show y'all what your missing! Both hands on the steering wheel, hard cornering, grabbing gears in a split second with a firm punch...nothing beats it!
     
  14. tassuperkart

    tassuperkart Its a lie I tell you!

    "They have soft syncro's so are prone to be grindy"
    "clunk and grind about old fashion manual"
    "A manual Z and smooth ride don't belong in the same sentence"
    "It can shift harder and faster than any lead footed ape piss-fartn' about swapping gears".... errrmagerrrd!

    And then this gold star effort:
    "In fact, the V8 supercars aren't even using Manual gearboxes anymore"

    Ill stop there........... I cant stop laughing at the V8SC not being a manual bullshit.

    I have never in my life been asked to swallow such a load of abject horseshit in my life!!!!
    The only one around here with a knob in their hand is you buckoh. Pull it much harder and it might wear right down to a point.

    Do some simple research Einstein.
    V8SC use a manual gearbox. Shifted by hand... (with a KNOB). Its a constant mesh, dog engagement, sequential shift type MANUAL transmission nicely suited to flat shifting. WITH or WITHOUT the clutch. Do you even know what flat shifting is? Google it.
    The gearboxes arent designed to shift sans clutch, they just happen to tolerate it. What happens in an endurance race? Well fark me, the boys use the CLUTCH.. Both up and down shifting!!!
    Why? Its less abusive on the transmission and hopefully the gearset will last the entire race is why.

    And that other codswallop about soft synchros... Oh FFS m8 your a complete dick. Didnt you somewhere claim to be some kind of automotive analyst? What exactly do you analyze?.... Frikken interior colour schemes most likely!

    Those "soft" synchros are made of the same brass type alloy that a zillion other gearboxes are fitted with, and to tolerate what they do for as long as they do is actually a fairly good indication of their longevity.
    A synchro is a clutch and one side of the clutch setup needs to be sacrificial.
    Fitting more brutal synchro ring metals just accelerates the wear on the synchro cone resulting is less overall service life for the sake of being able to abuse the synchros even further.
    Toyota were fitting steel synchro rings into their old steel-case 5 speeds a lifetime ago. They were given a wide berth even then due to hideously expensive repairs when the synchros inevitably gave up taking the accompanying gear with them.

    Why dont you run your idiotic ruminations about the manliness or whatever other crap you ran off at the mouth about to my wife eh?
    She just bought a new car and SPECIFIED a manual, because that is what she PREFERS to drive.
    Does that make her lesser a woman/man (whatever).
    Tell my son hes lesser a man because he prefers to drive a manual.
    Why dont you tell me Im lesser a man because I drive a manual then smartarse? I actually prefer to cogswap manually.... with a knob.
    I couldnt care any less that its slower than your SAW kit or indeed an 8 speed F1 gearbox and anything inbetween...pff.
    I actually find it entertaining and a rewarding challenge to get everything in "synch" (no pun) while punting along at even stooging speeds around town.

    You like pushbutton auto shift, good on you. To each his own. You are no more or less a man for that choice, but your a prize dickhead casting aspersions on those who actually prefer to shift gears manually.

    But, before you go running off at the mouth how about enlightening yourself technically eh? You look a right dickbrain for the entire forum to see and laugh on about making such incorrect and zero researched statements.

    Oh, BTW sweatheart, your precious push-button auto is actually a MANUAL gearbox with several clutches in it.
    Clutches AKA "bands" Known to regularly wear out, require adjustment and fail a lot more often that manual box synchros. especially if overheated by zealous driving!!!!!

    There ya go blossom!!! IUm off for a Bex and a good lie down!!!

    E
     
  15. Jamie

    Jamie Jamie The Hobbit

    Sorry Cam but it's about time you did some serious research before offering advice. I've seen you give some really horrible advice lately and i'd be pretty embarrassed if I were you. I mean good on you for wanting to help out, but the last thing we want is a forum full of wrong advice. Once people like Rob leave the scene there'll be nobody to pull you in line.

    After driving an auto Z for 2 years and then buying a manual car I can definitely relate to the quote "an automatic gearbox says a lot about a man... Like he isn't one". Manual gearboxes shouldn't be in sports cars like ours. It takes a whole lot more skill to drive a manual than what it does an auto through a set of twisties. I would know, I've had the best of both worlds.
     
  16. Jamie

    Jamie Jamie The Hobbit

    Automatic***

    :rofl:
     
  17. Ns-Zed

    Ns-Zed Member

    Thanks for the.....advice..haha :D

    Let me get this straight, I dont want an auto. Simple fact is from low revs to mid range, every gear will grind and I simply want that to smooth out. They didnt come from the factory like this so all I want to do is smooth it out.

    So as per the advice given so far, I will change the gearbox oil. I will no doubt find what type of oil to use when I search the forum.

    if that fails, I'll get a new box.

    Should I be looking for bits of metal in the oil that I drain etc?
     
  18. 8300zx9

    8300zx9 Active Member

  19. rob260

    rob260 Administrator Staff Member

    Does it grind shifting up or down it both?
     
  20. Ns-Zed

    Ns-Zed Member

    its not grinding when shifting although engaging reverse can be difficult.
    it grind in every gear, from low revs until the revs get up over at least 3000. just seems to grind when under load at low revs.
     

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