uRizen

iTrader: (2)

I was taking a closer look at my spare S5 Mazda reman I got at the u-pull yard and noticed that the rotor housings have a threaded hole above the trailing plug. My S4 engien doesn't have these but I noticed the same holes when I was browsing Speed Machine's site and was wondering what they're for. I attached a pic of the ones at Speed Machine.

Terrh

iTrader: (7)

they're for the knock sensor. It mounts on the (rear) rotor housing in S5's instead of the center iron on s4's.

uRizen

iTrader: (2)

So it would only be used if I had a turbo rotary then? That's pretty interesting in any case.

RotaryEvolution

iTrader: (30)

all S5/S6 have the threaded housings.

lastphaseofthis

iTrader: (8)

do ALL s5/s6 have knock sensors though?

lastphaseofthis

iTrader: (8)

i've got en s4, is it better to have placed the knock sensor on the housing?

RotaryEvolution

iTrader: (30)

good question, i've only done a handful of S5 n/a engines and i can't remember if they have a knock sensor.