Motor Guru's
 

Hey guys im working on a BBC mark 4 and I noticed the oil galley plugs located behind the cam gear have holes drilled in the center of them.One is at .040 and the other is .078..Why the holes?are they needed? and what size should they be if needed?


Thanks Anthony

My guess would be to lube the timing chain. Some guy's like to do this when they run a gear drive set up.

hey nordic
still working on that fountain?
i hope you are keeping busy.
steve:evilb::ernaehrung004:

the holes are for oiling the timing chain,leave the .078 one in and delete the .040 one.

They not only lube the chain, but they keep a cushion of oil between the gear and the block so it doesn't dig into the block. I drill a .060 hole in the 2 plugs that are in the galleys that run through the lifters.
Eddie

I would leave them just like they are ,,,thats how mine are ,,,and it works fine .

If u run a gear drive it works aswell,,,keeps it quiet.

I agree, I diassembled 2 crusader 454 gen IV's and they both were drilled from the factory...

Thanks guys.

how about the torque spec for the oil pump bolt?????


Thanks Anthony

45 moly


Mine came with just 2 driled on my 500efi

So about 55-60 ft lbs with oil.

My old 330 had all three plugs with holes now I have one

65 ft lbs with 30 wt oil.
Eddie

that was with a arp stud,latley Iv just used blue loctite

OK I have another question I need help with.I thought I had 8" deep oil pan.But I was just setting up the oil pump,Melling Select 10777 with the screw in pick up,and it seems the pan measures 9" with gasket in place.Does this sound right?When I measure the old pump and pick up it measures 8-7/8". So Im assuming I have the wrong pick up but do they make a pick up for this pump in 9"?

Thank Anthony

I just found the right pick up.Its Melling 12702 if any one else needs it.

Thanks

One more question about this melling 10777 oil pump and pick up.When I screw the pick up into the pump should I red lock tight it in? or hit it with the mig in a couple spots?Whats everyone else doing to seal the tube so it doesnt have any air leaks and dont loosen and drop to the bottom of the pan.

Thanks Anthony

I use some RTV silicone around the pickup tube where it meets the pump to seal it. Works great and it won't break down over time.