Perspective On Using CBN Versus Polycrystalline Diamond (PCD) Cutters
In your June Shop Line you offered Jerry Lawson’s of DCM Tech, Inc., perspective on using CBN versus poly crystalline diamond (PCD) cutters. Have any other manufacturers voiced their opinions? In PERA’s May 1996 Current Concerns publication, Andy Rottler of Rottler Manufacturing made the following observations on CBN versus PCD cutters:Rottler says that due to
Letters: Test Data For Failing Rectifiers Requested
The article by Donald Yuhas, “Dissecting CS-130 Diode Failure,” in the May, 1996 issue of Automotive Rebuilder gave electrical rebuilders insights into the ways that diodes can fail. The author concluded that high “current pulse” technology is needed for successful screening-out of diodes that will likely fail in the vehicle.While I share that conclusion, the
What Is The Recommended Surface Finish
Shop Line, Automotive Rebuilder, July 1996 Q A In the Production Engine Remanufacturers Association’s (PERA) May 1996 edition of Current Concerns, Ed Keibler of Sunnen Products Co., St. Louis, MO, says that the typical Ra finish on cast iron should be 60 to 110 Ra. On aluminum cylinder heads it is much smoother – typically
Cam Timing Chain Marks On 1976-’88
The Automotive Engine Rebuilders Association (AERA) offers the following information regarding cam timing chain marks on 1976-’88 Isuzu 1.8L and 1.9L engines. Confusion may begin when reading the service manual information referencing marked plates on the cam timing chain. Apparently, some aftermarket timing chains don’t have the marked plates which indicate the correct positioning for
Making Power From Big Block Fords
As noted last month, the first part of a big block Ford power program is to select the appropriate components and machine them properly. Part two entails coordinating the camshaft and valvetrain with an engine’s intended use, and then bolting everything together using proven high performance techniques. According to high performance Ford specialist Norm Wizner,