Mx5 NA (longnose) /NB Crank saver

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Delivery Time 1 - 3 Days

Prevent damage to your crankshaft with our Miata crank saver.
Note: Does not work with NA Shortnose engine!

Product Information

Prolong the life of your miata (1992*-2005) crankshaft with this crank saver kit.
Comes with new woodruff key

How does it work?
This crank saver fills the 14mm airgap between the crank shaft, bolt and pulley.
It extends the woodruff key and reduces the stresses by increasing the surface are.

Why should I instal one?
Early "shortnose engines" commonly fail at the crankshaft splitting the woodruff key and tearing the key slot in the crank. This is caused by the crank's nose being too short.
Later Miatas have this issue less, but a still susceptible to this problem.
The crank saver greatly reduces the chance of the crankshaft getting damaged and/or prevent crank pulley wobble.

* Do I own a short or longnose engine?
General rule of thumb is all miatas from 1998, 1990 and early 1991 have shortnose engines.
With miatas often not completely original the best way to check is to look for the amount of slots in the crankshaft pulley.
4 (larger) slots = shortnose engine
8 (smaller) slots = longnose engine
See the last picture for the comparison.
 

Tips and tricks

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Clean the inside of your crank pulley to prevent it from being a too tight fit. 
Antiseize all mating surfaces to prevent parts from binding when dissasembling later.

Warranty and safety note

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This product does not guarantee infinite life expectancy for your crankshaft. It helps prevent good crankshafts from getting damaged. results may vary with previously damaged crankshafts. By buying this product you agree MP Performance can not be held accountably for damage to any crankshaft.