MGB performance engine build part 4, oil pump and pan

We continue the performance build for my ‘74 MGBGT Autocrosser. This time we are installing the oil pump and oil pan.
We discuss the most common mistake made when putting one of these engines together that leads to no oil pressure and requires subsequent removal of the engine to correct. We look at the oil pump, how oil flows through it, and how to check the clearances in it. We also look at potential oil restrictions within the casting of the new oil pumps and some minor modifications to reduce those restrictions. We then install the oil pan



This engine is a ‘74 5-main B series
Bored .060
Compression approximately 9.7:1
Wedged crankshaft
Balance rotating assembly
Maxspeeding 4340 H beam rods
King tri-metal main and rod bearings
APT VP12bk cam with CF-04 lifters
APT offset rocker bushings
Crane tubular chrome moly push rods
Lightened flywheel (15 1/2 lbs) for Datsun 5-speed conversion
Pro Sport sfi balancer
Fully baffled oil pan with trap doors and windage tray ( fabricated by me)
Ported ‘74 cyl head
Custom LCB header ( built by me)
Custom exhaust with hand made Flowmaster style muffler ( built by me)
Custom Maniflow style intake built for use with HIF-4 carbs ( built by me) ( final carbs will likely be a hybrid mix of HIF-4 bodies and HS-4 pistons and dash pots)
Re-curved 25d distributor by Advanced Distributors
MSD 6 AL ignition box with adjustable rev limiter