3.63 Ring & Pinion Possibly NLA
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3.636 speedo drive
You guys probably already know that mazda never released a 3.636 final drive in any of the NA miatas.
What people fail to realize is that the NA speedometer is driven off the tailshaft of the transmission via a mechanical drive and cable. Because mazda never offered this final drive ratio, they never offered a corresponding mechanical drive for miata application.
After going through all the (wrong) "internet wisdom" on this topic, and after 3 attempts, I've finally built a 3.636 speedo drive. Who knew that old 929 parts could be useful again?
Oh, and if you were wondering what that tall of a gear does with a 5 speed, 60 mph indicates 2500 rpm.
So for you patient people still waiting for their 3.636 gearsets with NA speedo drives, have hope. I've received all of the main parts, but I needed to order some oil seals and capture pins. You're going to have to put together your speedo drives, which is not too hard: a body, a gear, a pin, oil seal, and an o-ring. You'll see what I mean when you get your stuff. I'm expecting to have these shipped out Thursday.
What people fail to realize is that the NA speedometer is driven off the tailshaft of the transmission via a mechanical drive and cable. Because mazda never offered this final drive ratio, they never offered a corresponding mechanical drive for miata application.
After going through all the (wrong) "internet wisdom" on this topic, and after 3 attempts, I've finally built a 3.636 speedo drive. Who knew that old 929 parts could be useful again?
Oh, and if you were wondering what that tall of a gear does with a 5 speed, 60 mph indicates 2500 rpm.
So for you patient people still waiting for their 3.636 gearsets with NA speedo drives, have hope. I've received all of the main parts, but I needed to order some oil seals and capture pins. You're going to have to put together your speedo drives, which is not too hard: a body, a gear, a pin, oil seal, and an o-ring. You'll see what I mean when you get your stuff. I'm expecting to have these shipped out Thursday.
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