Stock vs aftermarket lsd

Engines, Transmissions & Final Drive questions and answers

Moderators: timk, Stu, zombie, Andrew, The American, Lokiel, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy

User avatar
dmad_dood
Fast Driver
Posts: 275
Joined: Wed Dec 19, 2012 8:16 pm
Vehicle: NA8

Re: Stock vs aftermarket lsd

Postby dmad_dood » Wed Apr 02, 2014 9:43 pm

Hmm so replacing the centre might not be the best way to go about it.
Red NA8..

User avatar
Aussie Stig
Stig
Posts: 540
Joined: Wed Aug 10, 2011 9:14 pm

Re: Stock vs aftermarket lsd

Postby Aussie Stig » Thu Apr 03, 2014 12:51 am

Just read flycasta. He knows diffs

BTW What's a 1.5 way, is that a type of clutch lsd?

Maybe that's the next step when your power is hitting monster turbo levels. :?:
Image

It is a known fact that 50% of people are of less than average intelligence

User avatar
NitroDann
Forum sponsor
Posts: 10280
Joined: Thu Nov 05, 2009 12:10 pm
Vehicle: NA6
Location: Newcastle NSW
Contact:

Re: Stock vs aftermarket lsd

Postby NitroDann » Thu Apr 03, 2014 12:57 am

yeah, one that is aggressive under power but only mild limited slip action under over run.

Dann
http://www.NitroDann.com

speed wrote:If I was to do it again, I wouldn't even consider the supercharger.

User avatar
dmad_dood
Fast Driver
Posts: 275
Joined: Wed Dec 19, 2012 8:16 pm
Vehicle: NA8

Re: Stock vs aftermarket lsd

Postby dmad_dood » Thu Apr 03, 2014 5:42 am

NitroDann wrote:yeah, one that is aggressive under power but only mild limited slip action under over run.

Dann


Which one is which?
Red NA8..

sailaholic
Speed Racer
Posts: 3511
Joined: Thu May 19, 2011 3:38 pm
Vehicle: NA8
Location: Brisbane

Re: Stock vs aftermarket lsd

Postby sailaholic » Thu Apr 03, 2014 6:01 am

1 is power
.5 is over run


Sent from my iPhone using Tapatalk

User avatar
hks_kansei
Speed Racer
Posts: 6154
Joined: Tue Feb 03, 2009 10:43 am
Vehicle: NB8A
Location: Victoria

Re: Stock vs aftermarket lsd

Postby hks_kansei » Sat Apr 05, 2014 5:40 pm

1 way only locked under acceleration loads

2 way locked under accel and decel.

1.5 locked under accel, allows some slip under decel

Most clutch packers are unlocked while coasting. (since if it was locked under coast you may as well weld the centre)
1999 Mazda MX5 - 1989 Honda CT110 (for sale) - 1994 Mazda 626 wagon (GF's)

User avatar
dmad_dood
Fast Driver
Posts: 275
Joined: Wed Dec 19, 2012 8:16 pm
Vehicle: NA8

Re: Stock vs aftermarket lsd

Postby dmad_dood » Wed Apr 09, 2014 9:53 pm

hks_kansei wrote:1 way only locked under acceleration loads

2 way locked under accel and decel.

1.5 locked under accel, allows some slip under decel

Most clutch packers are unlocked while coasting. (since if it was locked under coast you may as well weld the centre)


that clears up a lot of things cheers.

How hard is it to swap over a complete diff housing. Is it something that could be done at home be an amateur mechanic?
Red NA8..

User avatar
hks_kansei
Speed Racer
Posts: 6154
Joined: Tue Feb 03, 2009 10:43 am
Vehicle: NB8A
Location: Victoria

Re: Stock vs aftermarket lsd

Postby hks_kansei » Thu Apr 10, 2014 12:31 am

The whole housing isn't too bad to swap, but you will likely need a few breaker bars and a BIG extension for the socket used to undo the hub nuts (since you'll be swapping the half shafts in an NA6 to NA8/NB diff swap)


Basically you'll need a jack, some good stable jack stands, pry bars, and a good socket set.

It's doable at home, just awkward.
1999 Mazda MX5 - 1989 Honda CT110 (for sale) - 1994 Mazda 626 wagon (GF's)

User avatar
dmad_dood
Fast Driver
Posts: 275
Joined: Wed Dec 19, 2012 8:16 pm
Vehicle: NA8

Re: Stock vs aftermarket lsd

Postby dmad_dood » Thu Apr 10, 2014 6:36 am

Ive got an na8? but i guess i will still need to remove driveshafts.
Red NA8..

User avatar
Black_Penguin
Racing Driver
Posts: 726
Joined: Thu Jun 03, 2010 5:30 pm
Vehicle: NB8A
Location: Ulladulla, South Coast NSW

Re: Stock vs aftermarket lsd

Postby Black_Penguin » Thu Apr 10, 2014 12:58 pm

I've found it easier (and the factory workshop manual tells you) to unbolt the whole upright rather than undo the hub nuts in a diff replacement.
If you have a friend to help is easily do-able in a day.
My Garage Thread WP 1:16.1 SMSP South 1:10.0 WSID 15.6

User avatar
hks_kansei
Speed Racer
Posts: 6154
Joined: Tue Feb 03, 2009 10:43 am
Vehicle: NB8A
Location: Victoria

Re: Stock vs aftermarket lsd

Postby hks_kansei » Thu Apr 10, 2014 7:49 pm

dmad_dood wrote:Ive got an na8? but i guess i will still need to remove driveshafts.


Yep.

NA8 should be even simpler.

from memory the NA8 uses a flanged stub axle rather than the 1piece half shafts of the NB.

Simply remove the 4 bolts on each flange and drop the diff down.
Then you can use the pry bars to pull the stub axles from the old diff and push them into the new one.
1999 Mazda MX5 - 1989 Honda CT110 (for sale) - 1994 Mazda 626 wagon (GF's)

User avatar
hks_kansei
Speed Racer
Posts: 6154
Joined: Tue Feb 03, 2009 10:43 am
Vehicle: NB8A
Location: Victoria

Re: Stock vs aftermarket lsd

Postby hks_kansei » Thu Apr 10, 2014 7:52 pm

Image

Stubs still in the diff.

Image

Stubs removed from diff.



NB uses the 1 piece half shafts like these.
Image

So if you've got an NA8, you scored the easier one to do.

Just watch you don't break the circlips on the stub axles when taking them out/putting them in.
And be careful not to split the axle seals on the diff.
1999 Mazda MX5 - 1989 Honda CT110 (for sale) - 1994 Mazda 626 wagon (GF's)

User avatar
dmad_dood
Fast Driver
Posts: 275
Joined: Wed Dec 19, 2012 8:16 pm
Vehicle: NA8

Re: Stock vs aftermarket lsd

Postby dmad_dood » Fri Apr 11, 2014 7:15 am

That doesn't look to bad..

So instead of unbolting the drive shafts from the hubs, i can undo the upper suspension bolt and swing the driveshafts out as one piece? That really doesn't look to bad...

Ive got 4 x axle stands and a trolley jack along with good general tools (impact wrench as well).

Hopefully i can save a few hundred dollars. And chances are i will be doing the job along - none of my mates like this sorta stuff :(
Red NA8..


Return to “MX5 Engines, Transmission & Final Drive”

Who is online

Users browsing this forum: No registered users and 69 guests