Gearbox leaking after high revs
#2
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apart from the front and rear seals, the shifter likes to make a mess
#4
Rotary Evolution
i would lean toward oil off the bottom of the engine drafting to the catalytic converter/exhaust that is burning. the transmission itself pretty much can never get hot enough to burn oil. not to say transmission leaks aren't a problem too. after 35 years, im sure there is lots of leaks under there.
#5
Rotary Enthusiast
There is a "Breather, Air-Transmission" (https://www.mazda-parts.com/oem-part...r-air-88417530) on top right of your gearbox. It might be restricted causing pressure buildup resulting in oil being forced out of the front or back seals.
#6
Rotary Evolution
There is a "Breather, Air-Transmission" (https://www.mazda-parts.com/oem-part...r-air-88417530) on top right of your gearbox. It might be restricted causing pressure buildup resulting in oil being forced out of the front or back seals.
#7
Rotary Enthusiast
You're probably right about that, but never say never. I would first suspect the rear e-shaft seal and o-ring are causing the leak.
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#8
Rotary Motoring
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NA RX-7 (M type) transmissions are notorious for leaking out the rear seal during racing.
To keep the rear seal from wearing out so fast at high rpms racers would commonly weld material onto the tailshaft so they could bore it and fit a bearing just behind the seal to support the shaft so it wouldnt wallow out the rear seal so fast.
If you look inside the trandmission bellhousing and its not super oily inside there its probably that common rear seal...
To keep the rear seal from wearing out so fast at high rpms racers would commonly weld material onto the tailshaft so they could bore it and fit a bearing just behind the seal to support the shaft so it wouldnt wallow out the rear seal so fast.
If you look inside the trandmission bellhousing and its not super oily inside there its probably that common rear seal...
#9
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i would lean toward oil off the bottom of the engine drafting to the catalytic converter/exhaust that is burning. the transmission itself pretty much can never get hot enough to burn oil. not to say transmission leaks aren't a problem too. after 35 years, im sure there is lots of leaks under there.
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