- Location
- Sacramento
95 SN superjet. Just installed factory bpipe with limited chamber, girdled head 35cc domes with 180 psi in each cylinder, and put a 9/15 hooker in a while back. When riding the stock 61x with the prop I couldn’t really tell much if any cavitation, but now with the bit of added power it seems to be spinning its wheels a bit on the low end. Ski also has a Riva aluminum pump shoe.
I checked the wear ring and it was to spec when I installed prop, Could fit like 2-3 piece of plain white printer paper through prop and wear ring. I did not put any silicone or 3200 on the pump seal that mates to the shoe, and I also used the old seal. I got a new oem seal and just by looking at it it seems almost an 1/8” thicker then the seal that’s on the pump now, could this be my issue?
Also do you ever have to shim a pump shoe out so it mates tight to the pump seal? I did not shim mine just threw it in with a bunch of 3200. Any advice appreciated!
I checked the wear ring and it was to spec when I installed prop, Could fit like 2-3 piece of plain white printer paper through prop and wear ring. I did not put any silicone or 3200 on the pump seal that mates to the shoe, and I also used the old seal. I got a new oem seal and just by looking at it it seems almost an 1/8” thicker then the seal that’s on the pump now, could this be my issue?
Also do you ever have to shim a pump shoe out so it mates tight to the pump seal? I did not shim mine just threw it in with a bunch of 3200. Any advice appreciated!