Parts list: 1 throttle body
adapter, 4 M8-20mm bolts, 4 M8-40mm bolts, 1
RBC-type gasket, 1 PRB-type gasket, 1 rubber
plug.
1) We will assume that proper installation
of the RBC manifold to the cylinder head was
already completed. At that installation of
the throttle body is all that you have left
to complete the install. Start by lining
up the RBC-type throttle body gasket with
the holes on the RBC manifold.
2) Now line up the countersunk holes on
the adapter plate with the same holes in the
manifold. Using the 4 M8-20mm bolts provided
you can now bolt the adapter onto the RBC
manifold and tighten it securely.
3) Next, line up the PRB-type throttle body
gasket with remaining holes in the adapter.
Using the 4 M8-40 bolts provided you can now
bolt the throttle body to the new adapter
plate and tighten it securely.
4) Rotate the throttle rotor and be sure
there is no interference or binding. If
everything is working properly you can
now reinstall the throttle cable.
5) If you are using a K20A/A2 throttle
body, install the provided rubber plug into
the unused map sensor port on the RBC
manifold. However, if you are using a K20Z1
throttle body, you need to relocate the map
sensor to the RBC manifold
location. Then install the provided rubber
plug into the unused map sensor port on the
K20Z1 throttle body.
6) Due to the wide variety of aftermarket
hoods and with K-series engine swaps
becoming more and more popular it is also
recommended that the hood clearance be
checked after installation of the RBC
manifold and adapter plate. The evap purge
solenoid valve which is located on top of
the throttle body has been known to contact
the hood with some engine mount and hood
combinations. In these cases, the purge
valve will either need to be relocated or
removed entirely to allow the hood to close
without interference.
