Erwin heeft gelijk.
C5AZ-8501-K(R)
*R= Remanufactured
Kijk even of de pomp open is aan de achterzijde, de C5AZ-8501-K is namelijk open en hoort op de juiste daarbij behorende timing cover.
Alu
Cast iron
Zie copy/paste hieronder.
High Performance Ford Engine Parts Interchange
Ford small-blocks, except the 289
High Performance, prior to 1966, were
equipped with aluminum water pumps
(C5AZ-8501-K) from the factory. As a
result, they were equipped with a timing
chain cover specific to the aluminum
water pump (C4AZ-6019-B).
This timing cover is not compatible
with the cast iron water pumps.
Whenever you’re building a small-block Ford, we advise against the use of the pre-1966 aluminum
water pump unless you’re striving for originality. Instead, upgrade to the cast iron water pump
(D3UZ-8501-A or C5AZ-8501-A). The important thing to remember is the difference between the
D3UZ and C5AZ cast iron pumps. The D3UZ pump is the standard cast iron water pump used on
289, 302 and 351W engines through 1969. The C5AZ high-flow pump was originally 289 High
Performance-specific from 1965-67. These water pumps are interchangeable, with their inlets
located on the right-hand side of the vehicle. To upgrade to a cast iron water pump, you must use
the appropriate timing chain cover (C4AZ-6019-B) or any post-1965 timing cover compatible with
the cast iron water pumps.
Because nearly all of these water pumps have found their way into the rebuilding supply line and
have lost their original identity, casting numbers don’t have the validity they used to. Fortunately,
the aftermarket offers a wealth of high performance water pumps for Ford small-blocks.
Mustang Waterpump Assembly Application Chart
Part number C5AZ08501-K
Year '65
Engine 260 & 289
Aluminum; uses C4OZ-8512-B & C4OZ-8530-C
*Except with High Performance 289
Bovenstaande zegt uiteraard niets over de combinatie mogelijkheden van alumimium waterpompen met cast iron timing chain covers
in het algemeen. Echter wel over de specifieke applicaties van bovenstaande partnumbers en de daarbij behorende modeljaren en individuele toepassingen. Zelf heb ik jaren lang met een cast iron pump op een "dichte" alu 302 cover -van ik meen '77- rondgereden zonder troubles. Er zitten echter wel degelijk onderling verschillen in zoals Erwin ook al schrijft.
Michel.