The runner's in the new heads have had the angle changed by the chap who has ported the heads, so we need to visit his workshop (picking up the newest tappet carrier from the machine shop en-route) to establish what chamfer angle the sandwich plate is going to need.
M3 ITB's:
The runner's in the new heads have had the angle changed by the chap who has ported the heads, so we need to visit his workshop (picking up the newest tappet carrier from the machine shop en-route) to establish what chamfer angle the sandwich plate is going to need.