PerformanceSound
Well-Known Member
Why would the bore be a completely different story for a modular engine? It was done before by Toyota with the 1UZ and 3UZ:i'm no expert in that field.
But I always was under the impression that modular means more or less cylinders and maybe different stroke, but changing the bore, that's a completly different story
1UZ-FE (4.0L):
Bore: 87.5 mm (3.44 in)
Stroke: 82.5 mm (3.25 in)
Block: Aluminum
3UZ-FE (4.3L):
Bore: 91 mm (3.6 in) (Increased from 1UZ)
Stroke: 82.5 mm (3.25 in) (Same as 1UZ)
Block: Aluminum
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