We have customers that have used one of these pumps for three seasons of 200 to 400 lap events problem free. They have a hard anodized aluminum pulley. The inlet fitting is #10 and the outlet is #6. The relief valve is set for 1050 psi at 900 RPM at 2.6 gallons per minute. Weighs 5 pounds.
Howe
Racing Enterprises
3195 Lyle Road
Beaverton, Michigan 48612