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Old 12-06-2012, 08:43 PM   #15 (permalink)
Ecky
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Join Date: Dec 2011
Location: New Zealand
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ND Miata - '15 Mazda MX-5 Special Package
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Crazy thing is, this is a 5 speed. The transmission was originally mated with an engine with a redline of 8200rpm and 2 cam profiles. The gear ratios were close to allow that engine to stay in the upper cam profile (engages at 5400rpm) when accelerating. At all reasonable highway speeds it was still able to cruise in the lower cam profile.

The new engine has a larger displacement (due to much longer stroke), redlines at 6800 and has a very simple head, so this tranny isn't really suited for it. I should've replaced the transmission when I had the engine dropped in but I didn't know much about cars at the time.
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