OST-070: 7AGE for an N2 Levin

[Vaptor]

Love the details

As I am going to use a TVS supercharger 900 or 1320 on my build, with High Lift cams, I was commended to go with 38mm (37mm) Exhaust port.
Do you perhaps know if the 38mm gasket is a 1:1 copy of an TODA gasket?

Just to compare what the local tuner recommends compared to your work, What diameter did you get the new bovls machined to?

I think I read somewhere, that you use some old SR20 valves, when doing the chambers, is this correct? Is there a certain size valve that you use, or is it the same size, as the oversize 4age valves IN32mm EX28mm?

Oversize valve work, is new to me. so hope that I can drain you for some knowledge