Okay, PACECARTA pointed out that the Return down-pipe from FPR and the frame mounted line are not the same size. Obviously I didn’t measure the two lines but my theory was derived after putting the same o-ring on the end of each pipe. Neither fits snug but below the engine, the o-ring falls off quite easily. So Paul I owe you yet another beer. (This project gets more expensive every day.)
Anthony thanks, interesting read on the link you provided. After Tori switched to a DW200 pump, although different brands, our pumps have the same flow capacity. I wish Tori would have said what the psi was with vacuum ON because I can adjust to 43 (vac line off) all day. My problem is the Return line creates a lower limit of 40 – 41 psi (vac line on). In other words, the pressure doesn’t drop properly with 18Hg vacuum applied at idle.
Anthony thanks, interesting read on the link you provided. After Tori switched to a DW200 pump, although different brands, our pumps have the same flow capacity. I wish Tori would have said what the psi was with vacuum ON because I can adjust to 43 (vac line off) all day. My problem is the Return line creates a lower limit of 40 – 41 psi (vac line on). In other words, the pressure doesn’t drop properly with 18Hg vacuum applied at idle.