Show us your home made tools
So I made this the other day. After modifying a set of 273 rocker arms I got to thinking how do I know for sure that the oil will be getting to the top of the valve stem and not just hitting the side of the spring where its of no use? So i modified an old rocker shaft with a fitting to connect to My air compressor. I then plugged all the remaining holes . Installed the shaft on the head removed one bolt filled the shaft with oil.Then tested the spray pattern varying the air pressure from 20-80PSI. I now know for certain that I drilled the new holes correctly as I could see the oil spraying directly at the point of contact between the rocker arm and valve tip.
So I made this the other day. After modifying a set of 273 rocker arms I got to thinking how do I know for sure that the oil will be getting to the top of the valve stem and not just hitting the side of the spring where its of no use? So i modified an old rocker shaft with a fitting to connect to My air compressor. I then plugged all the remaining holes . Installed the shaft on the head removed one bolt filled the shaft with oil.Then tested the spray pattern varying the air pressure from 20-80PSI. I now know for certain that I drilled the new holes correctly as I could see the oil spraying directly at the point of contact between the rocker arm and valve tip.