Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
have never used silicone in a Superjet pump. light grease on the pump seal is all that would be needed. Be sure to compress the pump seal when installing the pump. This can be a pain to do.
Hooker 9/15 Slipping?
- Thread starter Th3 VVay
- Start date
Yeah I really didn't want to booger up a fresh seal with silicone, I'll do grease. What about between the reduction nozzle and wear ring though? Is should that have a bead of silicone?
- Location
- Ontario, Canada
I'm with BK, sillycone never goes near any part of my pump unless reinstalling a pump shoe. The little stepped alignment shoulder where the wear ring seats into the nozzle should be plenty of sealing for that area. A touch of waterproof marine grease might help preserve it and make installs and removals a little easier though. Mine has always been assembled dry and always been reliable 
So last night I reinstalled the skat trak impeller into the stock stainless wear ring and measured the gap, it was around .20mm to .25mm (.01"). So it seems the Hooker's overall diameter is slightly smaller than the skat trak, therefore increasing clearance to the wear ring. I then pulled the pump from my waveblaster which has the replaceable plastic wear ring. I swapped the housings between pumps (plastic wear ring on sj now and stainless on wb) and reinstalled the hooker on the superjet. Clearance from the hooker to the plastic wear ring was around .15mm I also put a new pump seal on the superjet pump and I'll reinstall it and test this weekeend. Hopefully that is the issue, i'll report back with my findings.
Yes, it is installed.
Well I had it out again this weekend with the wear ring and new pump seal installed. It seemed better but now I'm starting to notice a slight hesitation in the low end. I think popoff needs adjusted. I originally had a 115 gram spring when I did the 701 swap and went to 95 gram. That cleared up about 75 percent of the hesitation it was having. But it's still there somewhat. Ordered a pop off gauge and I'll be testing that once it arrives.
On another note, I just replaced the pump bearings in my waveblaster. It had been humming while at speed. Now when I start it out of water it seems noisier than usual and sounds like its coming from the pump. The pump was shimmed and aligned so I'm not sure if I'm just being paranoid or if it's actually louder than before. Im trying to isolate whether the sound is coming from the engine or the pump. Is it okay to remove the pump and start the motor? Would that hurt anything?
On another note, I just replaced the pump bearings in my waveblaster. It had been humming while at speed. Now when I start it out of water it seems noisier than usual and sounds like its coming from the pump. The pump was shimmed and aligned so I'm not sure if I'm just being paranoid or if it's actually louder than before. Im trying to isolate whether the sound is coming from the engine or the pump. Is it okay to remove the pump and start the motor? Would that hurt anything?
Good to know thanks. And that may be it. It sounds like rattle in the pump area and I only hear it out of water at idle. Once I rev it a bit, the rattle goes away. My superjet is dead quiet in the pump though. I'll try starting it without the pump, then grease the splines, reinstall and see if sounds still present.