MK4 Gearbox Tech Night

[drumtochty Eddie Cairns]

Sometime in October there is a Tech Night at Paul Roddison's workshop in Sheffield where a gearbox and back axle product engineer will comment on a failed Mk4 gearbox being stripped down.

It should be an interesting night. We will probably go down to the Peak District for some walking at the same time.

[IanH]

Eddie,

Will be interested in any feedback from that session.

Ian

[Enjay]

Likewise.

I've heard a few grumblings about the Mk4 box but I haven't actually seen anyone saying anything definite as to what might be wrong with them. Can anyone point me in the direction of an article or discussion where I could find out some info?

[IanH]

I think the starting point should be that yours will be OK, all RF's will have upgraded boxes.

From release in 2015 to about August or September 2016 there are a range of boxes (numbers listed in a worldwide TSB) that may shred second and third gear under circumstances that are hotly debated. Track or autocross type use seems to be an implicating factor, fitment of an LSD may be another, nothing is confirmed publicly.

Paul Roddison, the subject of the wrecked boxes above has shredded several now while racing, Mazda UK are saying that this breaches the terms of use of the car and will not replace his boxes, which is a slightly odd position seeing that racing and track day imagery have been used in the promotion of the car..

Mazda are speedily replacing those which fail and have not been used in competitive racing, what happens beyond the end of the 3 year warranty, which for some will be August 2018 is a cause of concern.

[Enjay]

Thanks for the info. Useful to know even if it won't affect me directly.