Thread: Nozzle sizing
02-14-2011, 07:23 PM #1
- Join Date
- Sep 2009
- Aussie Land
Does anyone know or recommend what is the best nozzle size in diameter for all round acceleration/top speed? On a 8100 rpm 260 hp s3 hull?
What would be the best size nozzle for acceleration 0-60 mph?
What would be the best size nozzle for top speed?
And does anyone know how much speed/acceleration change there is from different nozzles? Is it pointless to change them? Can you actually notice the change?
Thanks in advance!
02-14-2011, 07:32 PM #2
there is nothing available for the 260
02-14-2011, 08:35 PM #3
Any machine shop should be able to mill the stock nozzle to use the Riva reduction rings & set screws........
02-14-2011, 08:54 PM #4
02-14-2011, 09:41 PM #5
in the old days...for lack of a better way to describe it. they used to weld a ring into a stock nozzle. you swapped the whole nozzle...
02-14-2011, 10:25 PM #6
02-15-2011, 04:50 AM #7
02-15-2011, 09:10 AM #8
A good machine shop can do the job for you...
there is a rotax racing venturi but you have to use the pump also...
what i do is: i had an old style 215-255 skat trak 159mm venturi nozzle
& i weld new fitings...now it fits to both 255 & 260 models...but you have to
use an old style steering nozzle also.i used a skat trak also with rings...now the best
overall performace i had with 84-85 ring...
02-15-2011, 09:28 AM #9
02-15-2011, 04:31 PM #10
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