1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Where to get 39/8 4.87:1 CWP for GLS-SE diff.?

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Old Dec 20, 2018 | 05:48 AM
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From: St. Michael
Where to get 39/8 4.87:1 CWP for GLS-SE diff.?

Happy to buy one new with bearings, seals and shims.
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Old Dec 20, 2018 | 12:46 PM
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From: https://www2.mazda.com/en/100th/
whats a CWP?
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Old Dec 20, 2018 | 12:57 PM
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Crown Wheel and Pinion I bet! Google make me smart sometimes. Either that or its a Concealed With Permit to carry a weapon or a Certified Web Developer.
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Old Dec 20, 2018 | 01:08 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by t_g_farrell
Crown Wheel and Pinion I bet! Google make me smart sometimes. Either that or its a Concealed With Permit to carry a weapon or a Certified Web Developer.
if a certified web developer, walked into a bar called the crown wheel pinion with a concealed permit?
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Old Dec 20, 2018 | 01:27 PM
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From: St. Michael
Thanks for the giggle lads.

Yes, crown wheel & pinion.
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Old Dec 20, 2018 | 01:40 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Greg Cozier
Thanks for the giggle lads.

Yes, crown wheel & pinion.
Mazda USA has one, 1312-27-110A,
the Kia Part Number is 0K014-27-110, its much less expensive.
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Old Dec 20, 2018 | 01:53 PM
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From: St. Michael
Originally Posted by j9fd3s
Mazda USA has one, 1312-27-110A,
the Kia Part Number is 0K014-27-110, its much less expensive.
Information diamond right there!

I have a very good friend who is a MOBIS dealer.

Might you have Kia part numbers for bearings, shims, washers and seals?
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Old Dec 20, 2018 | 03:47 PM
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All the guts will be Mazda OEM parts or equivalent.

The KIA gear set is compatible with the rest of the Mazda parts.

If you are looking for a whole assembly, I don't think that exists new.

Rebuilding the actual LSD clutchpack can get very expensive if replacing all shims etc. I cant find the link now but there was a webpage that outlined the costs and I believe it was around $600. The GSL-SE diff unit is compatible with early Miata and FC diff's.

These links have a lot of good info:

https://www.mazdatrix.com/g6.htm

https://www.rx7club.com/1st-generati...torial-711712/
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Old Dec 20, 2018 | 10:15 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Greg Cozier
Might you have Kia part numbers for bearings, shims, washers and seals?
i do, most of it is the Mazda number with an 0 in front of it. Kia used Mazda designs until they were bought by Hyundai in the late 90's, the 95-?? Sportage used a Mazda diff, the FRONT diff is the same as the Rx7, the Rear is larger.

for the limited slip, Mazda had clutch type, viscous (under-rated) and Torsen, but if you're going racing OS Geiken is hard to beat!
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Old Dec 21, 2018 | 12:09 PM
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From: https://www2.mazda.com/en/100th/
i did a Kia vs Mazda for the bearings and such.

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Old Dec 21, 2018 | 12:24 PM
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From: St. Michael
Much thanks!
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