I’m not an expert, definitely don’t use this as a guide 🙂
Block with cam fitted.
Crank fitted.
Measuring bearing clearance using Plastigage.
Measuring end-float.
Everything I measured up until this point was within spec. The end-float did drop from 0.0055″ to 0.0028″ when I tightened the thrust bearing but I did shove the crank backwards and forwards before tightening and was told this is normal.
Test spin
This company is plain dangerous. After starting to build this engine, I measured the piston to cylinder clearance, which, according to the piston specification sheet (that MJA was handed) should be 0.0035″. The cylinders MJA bored are somewhere between 0.0045-0.0055″, not even consistent.
They also filed the piston rings. Moly rings where the top ring is meant to have a gap of 0.018″ and the second ring 0.020″. Some of them, both top and second, are as low at 0.016″. Thank god I measured them.
MJA is just plain dangerous. How can no-one have picked up on this before?
I might be able to salvage this by having the piston skirts coated but it is even more money MJA has cost me.