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Old 12-07-2014, 01:46 AM   #1
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Default Proper Flywheel for NB 1.8

So, I emptied my garage of its clutches. I have NO idea what cars they have come from over the years though. Can anyone give me some insight into what is 1.6, what is 1.8, that didn't come from a miata. etc. Or just some guidelines to determine how to find a 1.8 NB flywheel out of the mess..

All I've been told about the four, is that it was resurfaced for a 1.6, and didn't fit.





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Old 12-07-2014, 02:57 AM   #2
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Both in pic 2 and right on pic 3 look like my 1.8.
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Old 12-07-2014, 11:27 AM   #3
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Default 1.6L vs 1.8L flywheel

You could measure the OD of them.

1.6L should be 200mm
1.8L should be 226mm

(if I recall)

#3 doesn't look like anything I've ever seen on a Miata.

The step height should be 19.86 +/-0.05mm if I recall.
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Old 12-09-2014, 07:22 PM   #4
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Thought 1.8l flywheels were 226mm diameter and have PP standoffs, 1.6l was 200mm with no PP standoffs.

Not 100% sure. Close to 95% sure.
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Old 12-09-2014, 07:28 PM   #5
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Welllllll I dropped one off at the machine shop. So, fingers crossed? lol
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Old 12-09-2014, 08:12 PM   #6
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1.6 has no standoffs, 1.8 does. I don't know if there is a difference between NA/NB flywheels, but I strongly suspect there is not (if there is, they are interchangeable WRT pressure plates and clutch discs).
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