b18a1 ok so I have a walbro 255 fuel pump. Gsr oil pump. Do I just prime them both? This engine has never been cranked since my build. So honed cylinder walls. And brand new wiseco pistons and rings. And fully built head. What all do I need to do before I turn over? Do I need to oil a specific way? I wanted to pore the oil all over the valve train when I put it in. But what about the cylinders?

 

Pull your fuel pump fuse and crank it till oil pressure builds, Start it there after.

 

is that going to be it? I put assembly lube on everything but that was 2-3 years ago. This project is at 5 years.

 

Yes that is it, once the oil light goes off, it shows the pump is working. Crank it over a few more times after the light goes off and you now have oil in all the journals etc just like if the car was ran. Then you can give her fuel and let her rip.

 

alright cool. i can just unplug the fuel pump fuse or disconnect it by the wire?

 

Being the ignoramus I am, I didn't figure out what fuse controlled the fuel pump so I just unhooked the wire from the pump.

Now, I just unhook my injectors to stop fuel from happening.

 

I'm the one asking lol. So just unhook the injectors?

 

Assuming your injectors are operating properly, unhooking them will prevent fuel spray.

I also unhook both plugs from the distributor.

It's the same process I do for compression tests. No spark, no fuel.

 

but this will prime the block and oil pump for me?

 

Cranking the motor will do the oil pump. The oil pump is mechanically connected to the crank shaft, you spin the crank shaft you pump oil.

The reason they say to prevent the fuel pump is to prevent fuel from spraying while you are moving the pistons up and down cranking the motor to build oil pressure.

 

ok so just prime the oil pump then plug the fuel pump back in and crank it up? I need to hook up my catch can first.

 

That's the way I understand it.

You want the car fully assembled or the motor at least for it's first run.

Prime the pump and motor by cranking the motor without spark and fuel, then start her up and look for leaks, purge the coolant, set ignition timing, seat the rings.

 

Can you disco the main relay and accomplish the same?

 

I believe you can since it controls the fuel pump and power to the ecu (IIRC).
I pull the spark plugs too. Less resistance on the motor as your priming the oil, less draw on the battery, starter isnt working as hard. Also a good time to do a preliminary compression test. Kill 2 birds with one stone.

 

I like that! I will get compression test numbers to compare with my initial numbers from before the tear-down..

 

dissconnect the distributor and that will stop ecu from seeing it being cranked. Just crank it over til the light goes off and a few seconds after to build pressure. then connect distributor again and crank it up