Cardinell

I recently picked up an S4 T2 keg with a couple boxes of misc parts (manifolds, waterpump, turbo, etc). The keg had some work done on it prior. It is a half bridge with a lightened rotating assembly done by B2A. I do not know who did the ports, but a few people have pointed out to me that they appear to be a little on the thin side. So I'm looking for some opinions, wisdom, or guidance.






The misc parts included 2 pineapple port templates. One for a street port and one for a bridge. I can only assume this was the template used to port the motor. The bridge on the template measures about 4.5mm (excuse not having the digital reading on the micrometer. Battery died on me lol).


Bridge on the template



Now we move to the rear iron:


Rear iron



The eyebrow on this one is a bit wonky. Bridge measures about 2.5mm at it's thinnest point, and about 3.5mm at it's thickest. Also the distance from the coolant seal groove is about 1mm. The coolant seal wall from Mazda is about 1.5mm


Thinnest point


Thickest point


From port to coolant seal


Factory wall thickness






Now onto the front iron. This eyebrow is a lot more consistent. The bridge is the same thickness the whole way through. About 3mm. Distance from the port to the coolant groove is about 1.5mm, the same as the factory thickness.

On the bridge, there is an indent. Can't tell if it's a crack or a scratch. Your nail with catch it.



Front iron

Port and suspected crack/scratch


Bridge thickness

Distance from port to coolant seal groove






​​​Please let me know what you guys think! Appreciate any feedback