The reversed coolant header we offer is
intended to be used with the dedicated thermostat housing (
Thermostat housing )
and with the coolant pressure tank being mounted on the passenger
side of the engine bay. However, if you would like to use a
different cooling system configuration the header can be
supplied with different barb fittings.
Note: Due to the
varying quality of the headers I receive back, I have decided
to have all headers commercially glass bead cleaned - this
adds a bit to the price but makes sure everyone gets a nice
header that looks like new.
Here is a picture of the
shiny (nearly new) header:
The key features, of this arrangement, are:
1) The ECU and gauge temperature senders stay in the
Subaru stock position, where they both see the average of the
coolant temperature from the two heads - as Subaru had
2) The brass heater connection is nicely located to feed
directly into the top connection of the pressure tank.
Ensuring that any air in the system is swept into the tank for
automatic bleeding (burping).
3) Optional provision for after market temperature sender
NPT (sender not included).
4) Gauge sender location can be either left to take the
Subaru stock sender or as an option can be tapped to take the VW sender used in
the 1.9 L WBS engines - so the vanagon gauge will read the same
as it did originally (sender not included).
5) The brass barbed fitting for the thermostat housing
fits inside 1/2 in tubing
Here is what it looks like when it is installed and the
wiring harness has been modified to match the new location of
the temperature senders (sorry I do not have a picture of the
nice clean header installed yet):
Note: One of the features of our wiring
harness conversion service is that we can add an additional
connector and wiring in the harness to provide up to three
wires from the engine, to
the engine bay Black Box, to accommodate after market gauges. The after
market oil pressure gauge and coolant temperature gauge are
wired this way in the picture above. The coiled Wh/Rd wire is
the spare/un-used extra wire.