Thread: Reduction Nozzle Question
10-25-2008, 08:17 PM #1
Reduction Nozzle Question
I think I know the answer to this, but wanted some opinions:
I have a reduction nozzle that I bought of Ebay. Came with 3 rings just like the Riva one. I was replacing multiple parts today and was about to install this on my 2005 RXP.
However, I noticed the stock pump and stock venturi / nozzle have 10 vanes each. The nozzle / venturi I purchased on Ebay only has 6 vanes.
I assume I don't want to use that reduction nozzle and that I want one that has 10 vanes.
Thanks in advance!
10-26-2008, 09:09 PM #2
Anyone have advice?
Anyone done this with the same setup?
10-27-2008, 12:30 AM #3
bats... chances are you ended up with the wrong nozzle.
Can you post a pic? It may help out in determining what you ended up with.
You are correct, RXP/RXT nozzles have 10 vanes.
10-27-2008, 12:24 PM #4
I will try to take pics tonight. I will also get my stock nozzle removed and carefully look at them side by side. Thanks!
10-28-2008, 01:54 PM #5
Never had a chance to take pics. Was wrenching until 11:30 PM.
The nozzles are the same height, same bolt patterns, etc. Everything bolts on fine to the one in question. (reverse bucket, steering nozzle, spring for bucket, etc)
The only difference is 6 vanes vs 10 vanes. I am going to try it on Thursday morning when I go out. We shall see. Thanks.
10-28-2008, 02:03 PM #6
- Join Date
- May 2005
Usually you have the same number as the pump veins - and they line up with them. I don't think it will really matter much - but I'm interested if you can tell any difference. The xp pumps have 6 veins - rxp 10.
Good luck - doesn't cost much to have a stock nozzled bored to accept the riva or skat inserts. I did my own. I'm going to try to make some out of plastic instead of stainless - cheaper and easier - I made some for my wetbike nozzle and they worked fine.
10-28-2008, 03:47 PM #7
10-29-2008, 01:22 PM #8
It will matter alot. With a six vane nozzle your rpms with be down. The six vane nozzle loads the pump more. You will be down at least 300rpms and speed will be down. Bring your other nozzle with you and plan on changing it back out.
10-29-2008, 02:20 PM #9
JP, Thanks. What causes the load to vary based upon that nozzle? (still learning here!) Thanks
10-29-2008, 02:35 PM #10
Since the vanes don't line up, it acts like 14-16 vane pump instead of a 10 vane pump. Try it tomorrow and post your results.
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