Tore U20 Down - STD Cyl Bore Size
Posted: Wed Apr 26, 2023 7:57 pm
All,
Tore down the separated U20 engine that was already in pieces. Will have heck of a time replacing all the missing bolts.
What is the STD cylinder bore size? The average was about 87 mm.
Main Crank surface - 63 mm.
Connecting Rod - 52 mm
The odometer shows 28,000 miles. Don't know last time engine in car. If dimensions are stock, then it may be 28,000 vice 128,000 miles. Engine looks to be original bluish color and freeze plug were not rusted at all.
If the engine was pulled at 28,000 what would be the reason for premature failure ? Bottom half looks good but need to have it checked out, could it be with the overhead cam.
Tore down the separated U20 engine that was already in pieces. Will have heck of a time replacing all the missing bolts.
What is the STD cylinder bore size? The average was about 87 mm.
Main Crank surface - 63 mm.
Connecting Rod - 52 mm
The odometer shows 28,000 miles. Don't know last time engine in car. If dimensions are stock, then it may be 28,000 vice 128,000 miles. Engine looks to be original bluish color and freeze plug were not rusted at all.
If the engine was pulled at 28,000 what would be the reason for premature failure ? Bottom half looks good but need to have it checked out, could it be with the overhead cam.