short nose/long nose crank serial numbers - Miata Forumz - Mazda Miata Chat Forums
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NA (1989-1997) NA Miata discussion within. The MX5's first generation, the NA, sold over 400,000 units from 1989 to 1997.

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Old 03-14-2012, 07:16 PM   #1
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Default short nose/long nose crank serial numbers

Just wondering after what serial number did they go to the long nose crank? Havent gotten to tearing down the new engine yet but i got the # off it.. its 300328.. not scared of the shortnose just curious..
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Old 03-15-2012, 08:07 PM   #2
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no one?
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Old 03-15-2012, 10:40 PM   #3
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sorry ment to respond but got a little sidetracked
heres a good link to some info about it, and how to tell the difference. didnt see any vin related info though.
http://www.miata.net/garage/crankshaft.html
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Old 03-15-2012, 11:10 PM   #4
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Not sure about serial numbers, but the easy way to tell is if your crank pulley has 8 slots or 4. If it has 4, you have a short nose crank.
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Old 03-17-2012, 05:21 PM   #5
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Well after i removed the pulley i wouldve said i got another shortnose.. but according to the link and you guys i got a bignose cus its got 8 slots in the pulley... even the bignose looks pretty stubby....
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Old 03-17-2012, 05:33 PM   #6
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Found it! I couldn't remember where I read this. Good info.

http://www.miata.net/garage/crankshaft.html
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Old 03-17-2012, 05:50 PM   #7
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haha, you both listed the same link.
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Old 03-17-2012, 05:57 PM   #8
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Damn, I'm on a roll these days.
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