OEM 2008 Jeep Wrangler Rod Bearing

2008 Jeep Wrangler Rod Bearing Parts and Q&A

• Q: How to measure Rod Bearing Clearances with Plastigage on 2008 Jeep Wrangler?

  A: A good way to measure engine crankshaft bearing clearance is to use Plastigage, removing the oil covering first as Plastigage will absorb molecules found in oil. Slip Plastigage onto the entire inner edge of the bearing shell within the cap at a distance of 6.35 mm (1/4 in.) from the center, not around the oil holes and fasten the bed/cap bolts to their correct torque level. Once the bearing cap is out, contrast the Plastigage's flattened stretch to the millimeter markings in the package to find where they match which tells you the clearance in thousandths of a millimeter. Notice if any readings change from the butt to the tip, because this measures how much the taper is and record all your measurements from each point. Check if the specifications for clearance match the numbers shown in the table for the engine. Most Plastigage products come with 2 scales: one in inches and one in metric. Because it is available in a range of clearances, use the clearance that matches the requirements being considered. In order to reach the right bearing clearances, put in the proper crankshaft bearings.