aries
Engine is coming along smoothly so far....
Just finished up blueprinting the deck surfaces to the centerline of the crank. We used a precision BHJ block TRU-ing fixture mounted on our High speed CBN surfacing machine. We had Rottler MFG send us some precision ring collars to center up our 2" bar to ensure an accurately finished block. Here are some measurements:
Deck height side - stock book spec - Corrected
RH------------------------9.48"-------------------9.4715"
LH------------------------9.48"-------------------9.4712"
Within .0003" from RH side to the LH side
DART MFG boasts .002" accuracy on their blocks...
So we are well within an accurate standard for precision work.
The measurement is dead-on accurate from the front of the block to the back of the block. Only 8-9thou was removed to straighten and square the deck surfaces this accurately.
Using the stroke, rod length, compression height of the piston we determined that the calculated height of the piston will be .0012" and .0015" below the deck surface for each side. With these measurements and a few others like head gasket thickness/bore diameter of the gasket and the head chamber size we can accurately determine the compression ratio to 8.23:1.
PRECISION TAKES TIME.....
Howard