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Old 05-06-2018, 12:57 PM   #1
Junior Member
Join Date: Sep 2012
Location: Canberra
Car: Red Mazda 323 Astina 1991
Posts: 23
G5M-R Transmission Synchro Rings

Hi all,

I'm currently in a bit of strife with the manual transmission in my Astina.

1989 Mazda 323 Astina BG Hatchback 1.8 16V FWD Petrol 1.8L 4cyl 76kW BP 1840cc 76kW (Petrol).

The 5th gear synchro ring has broken and I have been unsuccessful in locating a replacement, or even a replacement transmission entirely if I have to.

Just completed an almost full rebuild on the car (literally everything), so I can't really back out and give up now.

I believe the transmission is a G5M-R Transmission.

Does anyone know where I can obtain internal transmission parts for this car? I don't care if it's internationally...however I am located in ACT, Australia.

Hoping someone has any suggestions on the matter.

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Old 06-06-2018, 10:15 PM   #2
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Join Date: Mar 2002
Location: melb.vic.au
Car: AZ-1, Astina Hardtop Turbo, BJ Protege, Beetle
Posts: 16,495
Mazda should be able to sell you one, but they'll probably quote you 6 weeks +

Otherwise a synchro from a BA (BA11P1) should work.

Sourcing your not-quite-overnight parts from Japan


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Old 08-06-2018, 08:35 PM   #3
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Join Date: Sep 2004
Location: n/a
Car: n/a
Posts: 10,921
if it has a 76kw bp (or B8) engine, then it isn't the dohc version. so it wont have a g series gearbox in it. it will have a f series gearbox in it.
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