Quote:
Originally Posted by JOHNCL
to Terry Burtz,
Does your new camshaft's exhaust lobes have enhanced clearance with the connecting rods? Its lift specs appear to be equal to my Stipe steel B 340 touring grind cam. The Stipe lobes pass extremely, dangerously close to the connecting rods. My engine builder says the cam should not be touched and that the rods need to be relieved and rebalanced. My hope is that your new cam provides better clearances.
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The "New Engine" has 2-inch diameter connecting rod bearings and there is not much clearance between the various parts. The parting line for the connecting rod cap is at 76 degrees just to clear everything including the cylinder wall, crankcase wall, oil pan, and camshaft. A loose connecting rod bearing will make noise long before anything hits. The "New Engine" has the timing gear centers in the same locations as an original cylinder block that results in our new camshaft having no more clearance than other camshafts.