1973 Mercedes Benz 230
BPE
modified 1973 Mercedes Benz 230 head with
welded up
port
dividers and custom made
"Thin Stem Valve" valve guides.
Deck surface showing high
compression welded chambers.
Before
After
Before and after views of chambers that were welded
and
reshaped for greater
airflow and higher compression.
Note custom smaller diameter valve guides.
Before
After
Before and after views of intake & exhaust ports showing
welded up divider
walls.
Intake manifold ports were also
Separated and exhaust headers were fitted to
vehicle.
Stock valves with large stem diameters (9 MM
intake
& 11 MM exhaust) are
shown with custom "Thin Stem"
(8 MM) replacement valves in center.
These
went along
with custom made valve guides and valve spring retainers.