Milling

Accurate Machine Performance has 3 mills. Two of the mills are CBN and are set up to mill blocks and heads. We also have a variety of jigs and roll over fixtures to mill a wide variety of other things such as intake manifolds and exhaust manifolds. We are equipped with BHJ block fixturing to square deck blocks. Square decking a block is important because it puts the cylinder banks exactly 90 degrees from each other. It does this by aligning the main bore center line with the cam bore center line allowing you to level the block 45 degrees each direction from this center line. We can also set your deck height, which is the depth of the piston in the cylinder. Race engines are usually (zero decked) which means he piston is exactly flush with the top of the block.

Angle Milling

For race engines to get maximum compression sometimes the only answer is to angle mill the heads. Angle milling allows you to raise the compression a lot more than flat milling. For instance, a Brodix spec head is 64 cc’s out of the box. You can safely flat mill it to around 48 cc’s without cutting into the intake seats. If you angle mill you can get it down to around38 cc’s. A lot of sanctioning bodies who require you to run a flat top piston. Now 10 cc’s might not sound like very much but it’s the difference between 15:1 compression versus 12.7:1 compression.

Bridgeport Milling

We also have Bridgeport style mill for custom machine work and fabrication. We have a rotary table for the mill, and it also has a digital readout. This is the machine we use for fly cutting pistons. Because of its versatility and repeatability, this is truly the machine for a thousand uses.