GM LS-Series Double-Roller Chain Oil Pump Spacer Warning If you are using a spacer to reposition the oil pump forward in a Chevy LS engine so that a double-roller chain can be installed to drive the camshaft, use caution to make sure the pump has sufficient end play and is…
Vern Schumann Schumann Sales & Service Blue Grass, IA
Easy Oil Pump Screen Install I just clamp the screen in my brass jaw vise and use a plastic dead-blow hammer to drive the pump onto the screen, being careful to keep them in alignment. This method started when I did not have a driver for an oddball engine. Now…
Randy Torvinen Torvinen’s Machine Menahga, MN
Understanding Standard and Reverse Rotation Marine Boats with twin engines usually have them turning in opposite directions so the torque reactions of the engines cancel each other out. This can create some rather unique problems for the rebuilder. The following four drawings show how the crankshaft and camshaft turn in…
Engine Pro Tech Committee with thanks to Melling Tool Co
In our shop we do a variety of cylinder heads for late model diesel trucks. On jobs like 6.0 Fords, 5.9 Cummins, or 6.6 Dura- max our customers often install ARP studs as in improved fastener. ARP highly suggests that the studs be retorqued after the…
Brad Luck Weaver Parts Sauk City, WI.
Ball Cup Effective Length When working with a ball-and-cup type pushrod from an application like a Ford or Chrysler product with adjustable shaft rockers, it is important to know the “effective” length when ordering custom length pushrods.- In this case, the effective length is the length from the tip of…
Darrin Anderson Sterling Bearing Inc Kansas City, MO
How To Identify A Cracked Wet Liner Before Installation With all the heavy-duty diesel engines out there with wet liners, nothing can be more aggravating than a second teardown due to coolant in a cylinder from a cracked liner. There is a good chance the liner was cracked before you…
Kevin Borkowski Tom’s Agri-Diesel, Inc Harlan, IA
Smoke ‘Em if Ya Got ‘Em In our shop, we don’t have a dyno or engine test stand. We work on a variety of engines from Chevys to Internationals to Continentals, so no engine start stand would suit everything we do. In an effort to find oil leaks, we have…
Brad Luck Weaver Auto Parts Sauk City,WI
Using Vaseline, grease, white lead or dense lubricants such as engine oil, vegetable oil, antifreeze, brake fluid, castor oil, vegetable shortening and silicon spray IS NOT RECOMMENDED for a liner seal lubricant.. Currently aftermarket suppliers recommend using a soapy water solution. Due to changes in liner seal…
Engine Pro Technical Committee with thanks to Advantage Engine Parts
I recently read a Shop Solution about using a cam and cam gear to test for gear to block clearance on late small block Chevy blocks. Well, here is our tool I’ve used for years. It’s an aluminum hub that’s .002 under cam bearing bore…
Randy Torvinen Torvinen’s Machine Menahga, MN
We have found that failures on 4.0l Ford SOHC secondary timing tensioners may be due to over torquing the tensioner at the time of installation and failure to replace the volume reduction plug. We compared the revised instructions included with the OEM Ford tensioner (32 lb-ft)…
DNJ Engine Components Chatsworth, CA