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  1. #71
    ksalles's Avatar
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    My buddy sent me a stock 60T nozzle that I modified to work on this ski. By modifying, I installed stainless threaded inserts into the bosses where the reverse bracket mounts. These older nozzles had the provisions in the castings, but weren't drilled and tapped. I just took it a step further and installed stainless threads. These nozzles have always been fast on different skis I've had, as mentioned. The 60T is a 85mm 5 degree with the thin diffuser vanes. I'll post pictures of the standard vanes that are in the nozzles with the 1.8 skis, NA and supercharged. The vanes are significantly thinner than the newer style nozzles as you will see in the pics. (the first 3 pics are the 60T nozzle with the thinner vanes, and the last 2 pics are the newer style nozzles) When I get on the water, I'll report my results...good or bad. Keith

    Quote Originally Posted by 1tommygunner1927 View Post
    I await your results....as time and effort allows. I love this kinda stuff!
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  2. #72
    ksalles's Avatar
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    More nozzle comparison pics for those interested. I still haven't gotten to the water to test. It's hot, humid, and overcast this am.
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  3. #73
    ksalles's Avatar
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    Ok, as mentioned the air and weather was far from ideal for testing...but being Louisiana is still basically on lockdown, what else is there to do. As I thought from my previous testing of props and nozzles, this nozzle generally is associated with good top speed numbers. As crazy as it is, the ski spun the exact same rpm on this 85mm nozzle as it did with the 87mm nozzle....just yielded a faster top speed. And yes, the max rpm function was reset to zero prior. From my experiences over the years, this nozzle has always been fast as mentioned. I'm glad I took the time to show the difference in diffuser vanes with the pics I provided. My theory is, and may not be right, and somebody like Tommy Jordon who is MUCH more knowledgeable on this topic than I am could probably explain it better,...is the thinner vanes allow more water volume in the bowl of the nozzle, yet still gets squeezed out the same diameter out the rear yielding more thrust and efficiency per rpm. I'm not saying that has to be the reasoning...just from what I've observed. This nozzle just seems to be fast on just about any, and every, thing I've tested it on. As a recap, these results are a 85mm 5 degree thin vane nozzle off a gp1300r that I modified to utilize the reverse function. This is also a brand new unpitched oem impeller from Yamaha.
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  4. #74
    MSX 150 guy lives on Mr. GP1800's Avatar
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    That’s awesome to see. How was acceleration with his nozzle? Is it any better at 40 mph+ for acceleration? I know that mine is kind of slow from 40 mph up. Seems like it makes a lot of noise but doesn’t accelerate that well

  5. #75
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Thatís awesome to see. How was acceleration with his nozzle? Is it any better at 40 mph+ for acceleration? I know that mine is kind of slow from 40 mph up. Seems like it makes a lot of noise but doesnít accelerate that well

  6. #76
    ksalles's Avatar
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    That's the seat of the pants I got as well with the 87mm...lots of noise, disrupted wash out the back of the ski, but not quite the pull. It feels like it just "blows" water compared to the smaller nozzles. Since the new oem prop, there is zero cavitation with any of the nozzles...even the stock 87mm. I just wanted to post all of my results.
    Quote Originally Posted by Mr. GP1800 View Post
    That’s awesome to see. How was acceleration with his nozzle? Is it any better at 40 mph+ for acceleration? I know that mine is kind of slow from 40 mph up. Seems like it makes a lot of noise but doesn’t accelerate that well

  7. #77

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    Quote Originally Posted by ksalles View Post
    As i suspected...I was on the soft limiter. The last 1/4 thottle was useless after the intake. I even tried it with a Soloas concord 13/19. With a full tank of fuel and my daughter we ran nearly 66mph at the same rpm...looked like 7800 from the stock tach. That's the same the stock prop turned. Being so much throttle was wasted on top end I figured I'd try an 83mm nozzle off an older FZR. Well, that did the trick...kept me off the limiter and went the speeds posted below. Not to mention it should get much better fuel mileage now being that much more efficient. From all I've read, I basically did the opposite of what most suggest, that's why I'm sharing. i used what i had laying around, and for a stock ecu in this heat...I'm thrilled.
    Did that 83mm nozzle just bolt straight up to your VXR without a mod? I'd be curious if you would gain any performance gains on an FXHO with that same 83mm nozzle.

  8. #78
    ksalles's Avatar
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    Yes...the 83mm bolted right on, no modification needed. What I will suggest, is make sure you make good rpm first before trying the smaller nozzles. These engines have to breath to make power. That's the most important piece of the puzzle. I feel the 87mm is better matched with a lower power/stock airbox and restrictive ribbon in place setup to allow the motor to spin easier. Once you install an intake that isn't restrictive and remove the ribbon, the power and throttle response is night and day difference...then you can start playing with nozzles. In my opinion, it would be a waste of time with a smaller nozzle and stock intake setup.
    Quote Originally Posted by bizeagle View Post
    Did that 83mm nozzle just bolt straight up to your VXR without a mod? I'd be curious if you would gain any performance gains on an FXHO with that same 83mm nozzle.

  9. #79
    200AQUAXER's Avatar
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    I'm curious if you took the 83mm and pitched the prop to get the 200 rpms you lost what the speeds would be?

  10. #80
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    Just curious what fuel your running? 87 at 100% or just regular 10% at the pump. Very nice work!

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