Pressure: Oil & Fuel
The front right side of the block has a port that was used for the non-turbo motors' oil pressure sending unit and has a plug in it. This was tapped to 1/8npt when the motor was torn down and a 1/8npt plug was put in for later use of this port.
I removed the plug today and installed a liquid filled gauge to check oil pressure and compare to the stock instrument cluster gauge. This engine was just rebuilt, has less that one mile on it and no more than 30 minutes running time. The oil pump that was included with the parts that were in boxes from the old motor was reused, the car showed just over 106,000 miles on the odometer. A few scratches were in the backing plate in between where the gears meet from normal debris being in the oil. Perfectly good to use in this motor.
Below are several pairs of pictures, their meanings are:
A) cold idle/78psi
B) cold 2000 rpms/84psi
C) cold 2500 rpms/87psi
it's been a couple minutes at this point so it's at least a warm motor....
D) warm 3000 rpms/86psi
E) warm idle ~28psi
fully warmed up and the cooling fan has kicked on once and this is normal idle
F) Normal operating temp. at Idle ~20psi
Factory spec for the pump: normal operating temp. @3000rpms is 78psi from this port
A)
B)
C)
D)
E)
F)
I also got a second liquid filled gauge to check the fuel pressure. Same situation as with the block plug- when the TB was apart, the plug was removed and the threads chased for a 1/4npt plug.
The plug I removed and used a 1/4npt-to-1/8npt adapter and installed a fluid filled gauge.
This is idle fuel pressure, ~37psi
Here's a primary injector spraying. Remove the coil wire from the distributor cap and lay it on the (-) battery post. Crank the engine over and watch the spray pattern. Switch the primary clip over to the secondary injector and watch that one too. A clean injector will put out a cone shape fog. If you see streams yours is dirty. It's a little easier to see the fog in the first video, in the second one you can't even tell it's spraying but it is, watch the throttle plate, you can see it collecting there. Shops that clean injectors should have them on a bench, flow cleaner through them in both directions and possibly clean then in an ultrasonic bath. They will flow test them for spray pattern, volume and make sure there are no internal leaks and that they close completely and shut off all fuel flow.
mouse over to play or right click to save on your computer and play at your convenience
http://www.b2600turbo.com/IM009687.AVI
http://www.b2600turbo.com/IM009688.AVI