This eng build is for a local neighbor who currently has a Tiico eng in his 90 Westy and is looking for a little better efficiency and power. Overall fairly straightforward eng build using 0.50mm O/S ASV pistons, ARP head studs, new K03 turbo, rebuilt injection pump, etc.
AHU long block rebuild work sequence:
Block prepped and bolt holes chase with taps, I-shaft bearings R&R, oil squirting piston jets installed, crankshaft laid, main bearing radial clearance check, main bearing cap bolts (TTY) torqued to spec (48ft/lbs + 90*) install front crank flange and oil seal, torque crank bolt to 90nm + 90*, mate pistons to rods, install pistons in block, measure rod bearing radial clearances checked, rod bearing cap bolts (TTY) torqued to spec (22ft/lbs + 90*), de-grease block deck, measure piston height projection, degrease cylinder head sealing surface, install head gasket locating dowels and centering pin, install head gasket, install cyl. head, install ARP head studs w/lubricant, torque to spec.
|All critical bolt holes are chased with a tap and eng block is thoroughly cleaned with air.|
|Head bolt holes being chased.|
Missing pic here is of the I-shaft bearings being installed.
|Crankshaft being laid.|
|Main bearings radial clearances being checked.|
|New TTY main bearing cap bolts installed and torqued to spec (48 ft/lbs + 90*)|
Misc. project pics: