STOCK INTAKE BOWL
PORTED INTAKE BOWL
Features of Note:
- Notice all the "meat" around the intake guide
- Also, see how the throat necks down a bit right after the valve seat
- The intake seat is relatively standard
Features of Note:
- This intake bowl has been ported and bronze guides pressed in
- There is still some porting left to do on this port, since you can see the throat still necked down a bit
- You have to be careful, since water jackets run close to the seats (for cooling)
PORTED INTAKE BOWL
STOCK INTAKE PORT
Features of Note:
- This view is looking more directly down into the bowl
- You can see the smoothing and blending done on the port walls
Features of Note:
- This is the standard stock intake port
- It has a high ceiling and a good general shape for flow
- Quality varies from head to head, since there are various casting flaws, core shift and flashing
- Notice how rough some of hte casting is
PORTED INTAKE SHORT SIDE
PORTED INTAKE PORT
Features of Note:
- You can see how the short side radius was laid back a bit, but not radically
Features of Note:
- After porting, the casting roughness is gone
- The port is more uniformly squared off
- The roof of the port has been raised and smoothed
POLISHED CHAMBER
- The chamber has been carefully smoothed and blended
- Not alot of material has been removed, but casting roughness and sharp edges are removed