Shane0524
Active Member
I have a 1996 GTX. It started to cavitate a little during a standstill hole shot. So I figured it was time to pull the pump. I pulled the pump and found the wear ring in pretty decent shape but the prop was quite chewed. It had a bent blade some good dents and a lot of leading edge damage. I replaced the wear ring and sent the impeller to Dave at Impros. The prop came out great and I was excited to test out the new parts. Shockingly the cavitation is much worse than before with a new ring and new impeller. How is this possible? The only other things I can find are the ride plate/shoe seal and the carbon ring seal. Is there anything else that can cause cavitation? Is there anyway to rig the carbon ring closed to test in for a short term, and any way to test for ride plate leaks? Can someone explain how having a bad plate seal creates cavitation? I just don't get how the plate really has anything to do with the pump flow? I heard you can put zip ties or grease on the carbon ring to temporarily test it? Could I temporarily put hot glue around the plate to seal it and see if it makes a difference?
The one other thing which my be my own fault - I have run this machine alot out of the water recently to test some carb tuning I have done..... I probably ran it for upwards of 5 minutes at a time with no water to the carbon ring. How likely is it that I burnt up my ring seal and stainless plate?
thanks in advance
The one other thing which my be my own fault - I have run this machine alot out of the water recently to test some carb tuning I have done..... I probably ran it for upwards of 5 minutes at a time with no water to the carbon ring. How likely is it that I burnt up my ring seal and stainless plate?
thanks in advance