DS rockers installed, and finally the intake manifold installed.
FYI: Gen I manifolds use a 30 ft-lbs torque value, while the Vortec manifold uses a 11-15 ft-lib spec. Go figure.
Used black RTV Gasket Maker on the fore and aft block joints instead of the rubber gaskets.
Laid the carb and the Spectre Performance air intake on the manifold and one valve cover to take pictures.
This air intake will lead over to the Spectre Air Filter and then to the snorkel on the PS wheel well.
Measured the header reducer: 2" down pipe. Those two pipes, one from each side will go to a Y joiner
on the DS and then into a 3" pipe, into the CAT and then into the muffler and out, 3" all the way.
Also installed an Autometer temp sending unit into each head. Will run those 2 into a switch, and then lead to
electric temp gauge. I already have a mechanical on the hose to the radiator. These are in addition to the
toyota sending unit located near the thermostat on the manifold. Yes, 4 temp sensors and 3 gauges -
I feel temp is important info to know.
The manifold has 4 water ports, one on each corner of the manifold. The 2 ones in the rear simply connect
to the head water port. There is NO cross over water channel like the one on the front with the termistat.
From my reading, these 2 in the back are for an external water bypass. I will connect them with
1/2" NPT 5/8" hose nipple and Tee them together and then run the 3rd leg to the heater input port.
Then from the heater to the water input connection on top of the water pump. The right front
water hole has the toyota temp sending unit in it and I will plug the right front water hole. On the front
of the manifold is also a hole, which also will be plug. This could be used for another water bypass hose
to the water pump.
These bypasses allow for more water to flow through the motor while the thermistat is closed, and helps reduce
hot spots
dougbert