timing mark
05-01-20, 04:04 PM
#3
Senior Member
Are you referring to the pulley mark?
RX8 mark is 5 deg BTDC, FC is 5 deg after TDC. Best to double check with a timing light and fixed timing. I found I had some latency I had to trim out with "Spark Hardware Latency". That's with D585 coils though.
RX8 mark is 5 deg BTDC, FC is 5 deg after TDC. Best to double check with a timing light and fixed timing. I found I had some latency I had to trim out with "Spark Hardware Latency". That's with D585 coils though.
05-05-20, 12:56 PM
#5
Senior Member
On further inspection - I was wrong, FC and RX8 are the same. Mark is 5deg ATDC. The Mazda RX8 manual wording threw me "-5 BTDC" = 5 ATDC. I just confirmed this comparing an FC pulley to the RX8 trigger wheel marks and on my engine using Lynn Hanover's tube/oil method. The wheel mark aligns with the pin 5 degrees after peak fluid level in the tube.
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