Timothy Davenport

Is there a certain way to install piston and rods in the motor. Beside the arrow on the piston. When i went to install piston and rods today they keep binded up when i free spin the motor with the piston rods installed. But if I only have the crank in it will turn with out problems. What might i be doing wrong? Toque the connected rods bolts to 42 ft lbs. If i losen it up to 30 ft lbs turn freely
.030 pistons. Stock rods. I had the rods press in the piston at the machine shop.

gs72

There is usually a large chamfer on one side of the crank end of the rod. These have to face the throw of the crank. Orient them this way. If the arrows are facing the wrong way on some of them. Then your machine shop installed them incorrectly.

joe_padavano

Some year Olds rods have an "oil spurt hole" at the parting line between the rod and the cap. If so, this always goes towards the cam.

Greg Rogers

Are you installing new rods? Or are they the existing ones. New rods need to be machined.

Timothy Davenport

They was original rods different Pistons and I did have them facing the wrong way machine shop never marked which piston goes in what hole. The chamfer side help out alot. Thank you all great group.