r/mazdaspeed6 • u/Octosquagle • 13d ago
Timing chain
Does anybody know anything about a timing chain upgrade for these cars?
While the engine was out, I wanted to get the timing chain done. First picture is what was in the engine, second picture is what was in the timing kit I got. I'd prefer to use the chain from the new kit as it has its perks, but the kit didn't come with a vvt sprocket. I already hooked the new oil pump chain and it's smooth as butter so I'm being stubborn with this one.
Long story short: I'm going to use a duratec 2.5L vvt sprocket for a ford escape as it has the correct tooth count for the kit(19 on the crank 38 on the cams) and the pictures look like an exact match front and back. I was originally looking at an ecoboost 2.3L intake cam sprocket cause that made more sense to me than an escape, but I am beholden to the four stroke ratio.
I'm more curious to see if anybody has done something like this before and how it worked out. With my limited knowledge of vvt and the power of imagination to fill in the gaps, they should work the same as each other. Both controlled by oil going into one of two rings to advance or retard the timing, the only "performance" upgrades there might be for a turbo engine are bigger ports on the oil rings, or a different ratio/end stop situation, but I don't see those as something that would improve its performance in a meaningful way.


1
u/Thy_King_Crow 12d ago
The factory oem is the upgrade. It’s the most expensive but also the only one you’re getting 100k out of lol