Ever wonder how to adjust the timing on your 1999-2005 Mazda Miata?
Surprisingly you cannot adjust the factory timing by clocking a cam
sensor like previous Miata's, until now. By simply replacing the factory
timing encoder (timing) wheel that sits behind your crankshaft pulley
with our specially designed slotted wheel, you can advance your factory
timing to meet your desired tuning needs. Originally designed for
racing, this wheel will also work for your stock street Miata and allow
you to advance your timing to achieve better performance.
Specs:
Replaces factory encoder (timing) wheel located behind the crank pulleyWeighs 9 ouncesPowdercoated a race inspired bright greenLegal for SCCA and NASA Spec Miata rules
Install and Tuning tips:
Note! Always follow factory manual procedures for all work on your
car, our suggestions are simply to paint a picture in your head on what
it takes to install this part!
Remove crankshaft pulleyInstall 5XR Timing Wheel (sticker out) between pulley back and timing belt cog with square hole positioned to accept located pinReinstall pulley and leave 4 10mm bolts inside pulley loosePosition
the wheel in the same manner as the factory wheel, which is achieved by
holding the wheel to the left while tightening the four 10mm bolts
inside the crank pulley. This will set it at 10 degrees of timing, the
same as the stock setting.Snug the 10mm bolts and Reinstall Alternator belt and A/C P/S belt if equippedThe
elongated slots allow you to clock the wheel to the right. Clocking the
wheel to the right will advance your timing, by moving the tabs on the
outside of the wheel further to the right of where they are located in
the stock position. It is recommended to start at the furthest left
setting on our wheel, which will set your timing at 10 degrees of
advance, the same as stock.Use a timing light to check your
timing. There should be two dots on your crank pulley that should line
up at "T" and "10", advancing the timing would make these dots move to
the left, retarding the timing would make them move to the right of the
gauge. A good timing setting for horsepower is 14 degrees advanced,
which would move the dot normally on the "10" two lines to the left. Our
timing wheel should allow up to 16-18 degrees of advance on your
timing, but be wary of higher settings without using high octane fuel
and dyno testing. The typical limit of timing advance before it starts
negatively effecting horsepower is 14 degrees of advance.To
adjust the timing, just loosen the four 10mm bolts in the crank pulley
and reposition the timing wheel. After your adjustment is made,
retighten the four bolts and check your timing again until you achieve
your desired settings.This product was added to our catalog on Thursday 05 January, 2012.
