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Old 11-17-2014, 11:50 PM   #1
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Default 5-SPEED MANUAL TRANSMISSION REBUILD KIT

Hi!

I searched for hours repair kit for the gearbox, and I found 3 options but not know the quality of them.

Someone has repaired the transmission? Which experiences have you had?

I found these:


1)
"Cobra Transmission" 134$ bearings and synchros kit

MX5 Juego de Sincronizador, Cojinetes, Empaquetaduras y Sellos [CT-BK302WS] - $133.99 : Transmisiones Cobra 1-800-293-1848, Juego de Reparacion para Caja Automatica, Manual y de Transferencia



2)
"Power Transmission" 163$ bearings and synchros kit

MAZDA MX5 5-SPEED MANUAL TRANSMISSION REBUILD KIT WITH SYNCHRO RINGS FITS '89-'95 MIATA - The American Powertrain Warehouse



3)
"Drivetrain.com" 261$ bearings and synchros kit

Mazda Built 4 and 5 speed manual transmission parts, and overhaul kits - Drivetrain
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Old 11-18-2014, 02:00 AM   #2
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Is there a reason you are rebuilding rather than buying a used one? Are they uncommon in Venezuela?

Sorry to answer a question with a question but they are so cheap and easy to come by in the us that its almost always easier to just replace it. Mostly given the fact that they are kind of a pain in the *** to disassemble.
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Old 11-18-2014, 02:05 AM   #3
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I don't know about you guys, but $150~250 is going price out my way for a crapshoot used 5 speed. Rebuild tends to be stupid expensive on top of that.

Last edited by EO2K; 11-18-2014 at 12:38 PM.
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Old 11-18-2014, 02:20 AM   #4
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$200-$250 last I checked $600-900 for a 6 speed. If you buy it from a halfway decent junkyard they will warranty it if its thrashed.
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Old 11-18-2014, 04:48 AM   #5
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According to op's intro, there are about 100 miatas in Venezuela. So, yes ... Rare.
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Old 11-19-2014, 07:11 PM   #6
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My first option would be that of finding a used gearbox, but junkyard here have nothing concerning to the miatas.

I found a transmission but it does not work reverse, that's a bad sign.

In fact mine works perfectly, the trouble is the bearings in 3rd and 5th gear makes a noise in high Rpmīs, I changed the oil and the sound has diminished.

Think I will choose option 2 "Power Transmission"
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Old 11-19-2014, 08:08 PM   #7
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Look up "reverse lockout problem" for the Miata 5 speed transmission. I'm not saying that is the problem, but its something to look into. It may be easier to fix than you might think.
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Old 11-23-2014, 02:47 PM   #8
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I have the same problem with my box and have decided to go with Cobra as they supply Jap -Nachie Bearings which are fine . As for warranty on used boxs , who in their right mind wants to pull an unserviceable unit and then refit another unknown but "warranted " box . Do your own bearings and be happy with the results
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Old 11-25-2014, 07:49 PM   #9
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Quote:
Look up "reverse lockout problem" for the Miata 5 speed transmission. I'm not saying that is the problem, but its something to look into. It may be easier to fix than you might think.
Yup but the problem is the crazy price of gearbox with bad reverse is around 550$...
____________________________________________

JDM Mazda Miata 90 93 1 6 Transmission 5 Speed | eBay

The shipping cost to my country is super expensive...

_______________________________________________


Quote:
I have the same problem with my box and have decided to go with Cobra as they supply Jap -Nachie Bearings which are fine . As for warranty on used boxs , who in their right mind wants to pull an unserviceable unit and then refit another unknown but "warranted " box . Do your own bearings and be happy with the results
I am happy to hear this, thank you very much a222133
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Old 11-26-2014, 03:23 AM   #10
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I also am a out of towner [ Aussie ] so am pleased to be of some help , wish I could supply bearing numbers to you , but I can't find them . good luck . Max
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Old 11-26-2014, 12:58 PM   #11
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Thank Max, I think it will be good for my cobra kit.

A couple of friends after graduating from college, got married they went to live in australia since then I have not seen, Australia is too far ahahah..
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Old 11-26-2014, 03:38 PM   #12
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As some of the shipping prices in or out of the US are over the top it sometimes is a cost saving to go through an on forwarder like Shipito . I can save by having the seller ship to this or a similar company and then have the items reshipped to me . Come and visit your friends here and we have lots of mx5's . cheers Max
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