MGB performance engine build part 2, rods and pistons

We continue the build of the engine for my ‘74 MGBGT Autocrosser. This time we look at the different connecting rods that were used in the MGB engine throughout the production run, and the aftermarket rods I am using in my engine, along with a minor modification I did to them. We discuss putting the pistons onto the connecting rods, checking the ring gap and installing them onto the pistons. We then put them into the engine and torque the rod caps completing the basic rotating assembly.


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