Dataq works well. I've built my dyno with it. I use a load cell also. The dataq box is very affordable, and fairly simple to use. I have the load cell, head temp, rpm, and o2 sensor hooked up. The only thing is that it just records the torque. you can calculate the hp manually. or if you have...
i thought that the hoses binding couldve been a problem. but the run horizontally, and the pump has really no restrictions to rotate, it rotates freely. im going to pull the pump apart and scope it out.
I did change the suction hose cause I thought it was collapsing. that wasnt the problem. If I'm making a lot of pulls the oil will get pretty hot. but that's never effected the pulls because if using the load cell.
What are some signs of a pump going bad on a dyno? My engines are all of a sudden showing way low on power, 2 that I've fooled with, and 1 that I have touched. The one I havent touched is almost 1 hp off from just the 15th. Or I'm wondering if my load cell is going bad?
when checking the cc, does the spark plug hole have to be level and plumb, or just level the head surface? i have a stand that makes the cylinder level and plumb, but was wondering if you have to level the tech nut to get the right reading?
Would someone mind helping me out with the correction factor formula? I've built a hydraulic dyno, that uses Microsoft excel to do the graphs and calculations. I think I'm close to using the formula, I would just like to be sure.