LIFTER BORE CHAMFER TOOL After enlarging lifter bores I was searching for an easy way to remove the sharp edge and put a small chamfer on the top and bottom of the bore. I machined up 2 pieces of 1" aluminum to accept my Sioux valve grinding stones. I made a short one...

BLOCK TRU OHC ECCENTRIC I made an eccentric for the front of an Audi block to set up the block true fixture. It uses the original slot as there is a bolt hole directly behind it. Several variations could be made with a smaller diameter eccentric and a slot in the...

CENTER THE MANDREL This saves a lot of time when centering the mandrel on blocks with bed plates. Using an indicator on the mandrel with stone pressure against the mains, zero the indicator, release pressure with lever. Turn the mandrel 180 degrees, put pressure back...

MAIN RING CHEAT On some blocks that you may not have Main Bar Rings for there is often one that is very close to one you do have. I simply make precision spacers from shim stock and run them through slip roll to make them round. For example, the 400 Chevy ring plus a...

SUNNEN CRG-750 FIXTURE TUNE UP I just used a set of LS main caps to shim the fixed surface plate (opposite the clamp) on our cap grinder. LS caps are normally cut very square to the sides, but first I verified these with a machinist's square. I use dye chem on the...

CAM TUNNEL CHECK This is a quick and accurate way to check cam tunnel to crank centerline accuracy using the common Block Tru fixture. First, mount up the Block Tru fixture, be sure the front cone is flush with the plate and snug both front and rear. Next, remove the...