Pushrod Observations

[boatmon345]

Rebuilding 1997 Yamaha 150HP 2 stroke S150TXRV powerhead.<br />( Click here to view updated blog with new pictures )<br /><br />I found that the 3 used rods I purchased from the salvage shop don't have the same numbers on them. All of the orig rods had the number 6 printed on them. <br /><br />In ounces, my original rods currently weigh:<br />13.9 (I plan to put this rod back in service)<br />14.1 (I plan to put this rod back in service)<br />14.1 (I plan to put this rod back in service)<br />14.0 (Due to imperfection, rod will be removed from service and replaced with a used one)<br />14.0 (Due to imperfection, rod will be removed from service and replaced with a used one)<br />13.9 (Due to imperfection, rod will be removed from service and replaced with a used one)<br /><br />The 3 replacement rods measure in ounces as follows:<br />14.0 For the two rods that indicate a # 2 on it.<br />13.9 For the rod that indicates #7 on it.<br /><br />What could the different stamped numbers mean, and what could the variations in weight mean, if anything? Other than that, all rods appear the same and bearings at both ends fit like the other rods.

 

[Ray Neudecker]

Re: Pushrod Observations

The weight variation is normal. I have seen them vary more than that. The number you are refering to is a casting number. May have come from a different Yamaha supplier.