Centerline Blocks

[TritonJrBluePlate]

Taking to a clone builder this week he mentioned that “centerlined” blocks are best.

Does anyone know what he was talking about? I assumed it was blocks with known blueprinted crank centerlines.

 

[Raging Bull Engines]

Typically it is a block that has the bore location corrected so that it is in the correct location relative to the crankshaft in the X and Y axis. This would also include making the bore perpendicular to the crankshaft. We usually start with a new block (when available) that has an under sized bore. This allows us the fix the bore location while ending up with a standard bore size.

 

[TritonJrBluePlate]

Typically it is a block that has the bore location corrected so that it is in the correct location relative to the crankshaft in the X and Y axis. This would also include making the bore perpendicular to the crankshaft. We usually start with a new block (when available) that has an under sized bore. This allows us the fix the bore location while ending up with a standard bore size.

I was wondering how this was done. So are the blocks being measure on cmm before the cutting? How do you know where to set it up to rebore?