gearbox and diff install

Engines, Transmissions & Final Drive questions and answers

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mmx005
Fast Driver
Posts: 242
Joined: Tue Feb 22, 2005 8:04 pm
Vehicle: NB8A
Location: central coast
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Postby mmx005 » Sat Aug 25, 2007 11:40 pm

i cooked 2nd gear last week in my nb8a, i removed the 5speed and installed the 6speed all on my own, except for some help getting the box's on and off the motor. NO air tools either (if u can beg or borrow air tools, i recon it will help ALOT). the miata projects book that i got from mania a while ago was my bible.

it can be done at home. having a pit in the garage floor at home is a huge help.

make sure you remove ATLEAST your headers and mid pipe.
a torque wrench that displays ft-lb if you use the above mentioned book.

TORCH with plenty of batteries!!!!!

lots of extensions cos i could have done with more at times, but got away with 1 short and 1 long joined together.

long breaker bar or tube that will fit over your ratchet for the extra leverage.

REPLACE EVERY THING that wears in that general area, e.g the bearing that is on the gear box shaft that goes into the motor, cos you wont want to do it all again in the near future if it goes.

if you have kids or a mrs (parents in my case), ear plugs for them may also be needed. why you may ask,well when you bash your knuckles cos your hand slipped off that spanner or you cannot remove your hand from that tight spot you just forced it into, there will be some expressions of frustration in the form of shouting 4 letter words etc. i know this cos i bashed my knuckles , got my hand stuck many times and more.:P

but dont let that put you off, its a great feeling of acomplishment when you take it for its first run after surgery. :D

have fun :)

mossy
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Location: melbourne

Postby mossy » Sun Aug 26, 2007 12:03 pm

Remember to wear some motox or MTB gloves, save some skin on your hands :mrgreen:

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jules
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Postby jules » Mon Aug 27, 2007 12:31 pm

mmx005,

Did you remember to get the flywheel machined as well?

Jules
Founder of the Gold Coast Chapter of the Honourable Brothers of Dodgy.
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atomic
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Postby atomic » Mon Aug 27, 2007 12:34 pm

Any idea on what kinda money we're talking about if I take it to say, Mania to get it all done?

silvermiata
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Joined: Tue Jul 31, 2007 7:59 am
Vehicle: NB8A
Location: Sydney

Postby silvermiata » Mon Aug 27, 2007 1:14 pm

I did get a quote from mania for the clutch change, If you have the kit (everything you need, bearings etc) then they charge 320$.

I have just ordered my clutch kit from ebay US and i will be changing mine, as my throw out bearing is stuffed... :? It will be my first time, but i am eager to do it myself with a friends help :evil:

mmx005
Fast Driver
Posts: 242
Joined: Tue Feb 22, 2005 8:04 pm
Vehicle: NB8A
Location: central coast
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Postby mmx005 » Mon Aug 27, 2007 11:32 pm

i didnt need to jules, i had that done last time when i installed the exedy sports tuff clutch. i only changed the box this time.

the best bit, is now there is a very good chance my diff is on its way out


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