SXR How to bore the Nozzle! It's awesome.

[nicolajjetrider]

Hi guys

last night I was reaching my project list and it said bore youre nozzle.

I took it up in the "drilling-bench" ( english haha ), and i got 2.9mm of it Looks grate!

Cant wait to try it!

 

[Crab]

80mm seems about right on the sxr, but we go to 85mm on the x2's for more bottom.

 

[Hirschfelt]

What mm is the steering nozzle now? I would bore your exit nozzle to 2mm larger than the steering nozzle. 86/84 or 85/83.

 

[nicolajjetrider]

Hirschfelt: why is that? what effect would it give you?

 

[jlane330]

Maybe I'm seeing it wrong, but it looks like he bored the steering nozzle and not the exit nozzle.

OP- are you boring the aluminum nozzle, or the plastic one only?

 

[evo8coop]

yea thats what it looks like too.... you need to do your exit nozzel to 80 mm

 

[moto x]

So you bore the nozzle to 86 and your steering nozzle to 84? I'm going to be doing this soon. I was going to have group k do it. But I think i have a local guy that can do it. Also doesn't group k only bore the steering nozzle?

 

[jlane330]

I only bored my exit nozzle (aluminum piece) to 80 mm. Never considered opening up the steering nozzle to be honest. Not sure if I should or not. No, the exit nozzle cannot be opened up to 86 mm, nothing would be left most likely. I think 80 is the number...

 

[evo8coop]

if you bore the exit nozzel the alum piece larger then 80mm you will start to lose top speed....

 

[nicolajjetrider]

We will take the pumpnozzle to the bench tomorrow, pictures will follow, thanks guys

 

[#ZERO]

Those Kawasaki reduction nozzles have an 86mm outside diameter so boring it too 85mm would make it paper thin at 0.5mm. You should bore your reduction nozzle at a 1.5 or 2.0-degree angle to maintain pump efficiency since you're using a lathe and I wouldn't make the inside diameter any larger than 84mm. The stock Kawasaki steering nozzle has an 83.25mm inside diameter and should always be 2mm larger than your reduction nozzle and not the other way around. If the orifice diameter between the reduction nozzle venturi and the steering nozzle venturi is less than 2mm then the jet-ski will be hard to turn; if the difference is greater than 3.5mm to 4mm, than the steering will be real sloppy.

 

[nicolajjetrider]

Hi. The weekend is over and a lot of mod's are been add my 800SX-R

The nozzle now is beeing drilles to 79.97mm.

 

[harleyguy]

[QUOTE"nicolajjetrider, post: 1259216, member: 7032"]Hi. The weekend is over and a lot of mod's are been add my 800SX-R

The nozzle now is beeing drilles to 79.97mm.

View attachment 179018View attachment 179019View attachment 179020View attachment 179021View attachment 179022[/QUOTE]
Quick question did you do a straight 80mm cut or taper it? And how did it perform? I am about to do mine

 

[harleyguy]

New to the site sorry hopefully you understand the weird post

 

[harleyguy]

And does it matter if you trim the brass piece?

 

[SVTPete83]

I have been looking in to doing this myself. What are people using to cut these out. Would my dremel work?

 

[Henry Stephen]

Lathe will keep you centered, but Zero tapers his bore, a little more complicated.

 

[SVTPete83]

I suppose I should find a lathr then.