gbledsoe3

Installed oil pump and the pickup for the canton oil pan. When cleaning up found gasket that is supposed to go between oil pump and the pickup. Should I pull the oil pan and put it on?

cutlassefi

Unless you checked both surfaces for straightness you'll need to pull the pan.

RetroRanger

That stinks but I think Efi gave the only good answer, just the other day I was working on my snowmobile, I had a small part I didn't want to lose and wanted to be sure to get in place during assembly, sure enough I finished assembly and realized the small part was still on the bench #%^^ĄŁ€>*... So I disassembled everything I had just done and reassembled correctly...for some reason nothing irks me more than taking apart something I just put together no matter what the reason! Good luck you'll feel better after you get it done!

gbledsoe3

One more question, is there supposed to be a gasket between the rear end cap and oil pump? I didn't see one in the gasket kit but since I'm pulling the oil pan, now's the time.

olds 307 and 403

No gasket

VC455

I agree with EFI that it is best to install the gasket because you are unsure of the condition of the surfaces.

This would be your responsibility and risk if you go this alternate route to estimate the integrity of the joint...

Get a large-diameter (4 to 6") pressure gauge and install in place of the pressure sender. Or put the pressure sensor voltage signal into an oscilloscope. Watch pressure as you slowly increase rpm from idle up to 2000 rpm with cold oil. The oil pressure should be rock steady. If you see any irregular variations, you are pulling air though the joint.

rustyroger

If it left the factory with a gasket then bite the bullet and pull the oil pan. The bean counters sanctioned the extra 10c per engine production cost for a good reason...

Roger.

gbledsoe3

New oil pan gasket on the way. Will pull the pan, clean off old oil pan gasket, install oil pickup gasket and 'temporarily' install oil pan until I'm done.