SXR Advice on tuning the wet pipe?

TITAN

TITAN

Location
Alexandria, VA
IMAG0331.jpgbump.jpgIMAG0333.jpgSo I went out today to tune the thing after installing it yesterday.

I did the whole start out with the bottom screw 3/4 from the closed position, then rode her, then adjusted the bottom again a couple different settings after checking each. Couldnt seem to get the first few inches of the pipe to sizzle at all. The water is damn cold but i can imagine that matters too much. I plaid with adjusting the combination of the other screws a few times too.

I got it to where it really hits in the middle and high end rpms but cannot seam to get it dialed in for the bottom end. I cant even do tail stands. So basically i cant get it to rip right out of the hole........any suggestions? It almost seems a little dead in the low rpms.

Oh I freakin banged the crap outta my knee today too. So Ill be off the water for prob a week.

I also just installed a stubby cone too but I cant imagine that would do anything adverse.

This is my first boat so Im not too intelligent. Putting new jets in for me was a first.
Everything with this boat is a first.
 
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djkorn1

djkorn1

kidkornfilms
Site Supporter
Location
Cleveland Ohio
Set the carb screws to FP settings.

Go to the screws ON THE PIPE... middle closed. Top 3/4 turn out. Bottom 1/2 turn out. Ride it.....

turn the top screw in 1/8th of a turn and ride it. Keep doing this over and over again until it hits where you want it.
 
TITAN

TITAN

Location
Alexandria, VA
thanks bro...I may need to check the FP settings on the carb screws. That makes sense.

Unfortunately, Im outta the game for a couple months......I freakin broke the knee cap, it cut through the skin and smashed the bone where the tendons were attached. Had to get surgery. Currently sitting in the recovery room at the ER on morphine. Gotta freakin stay here until tomorrow.
 
TITAN

TITAN

Location
Alexandria, VA
Just jumping wakes as usual. Got vertical, one of my feet slipped out of my foot hold while in the air....I quickly decided to push away and bail. I As I went down with the ski, I didnt get completely away from it. My knee hit the very back of the tray. I didnt really think much of it. I jumped back on, rode for a few minutes and came back in for the day.
 
Jetfiend

Jetfiend

Location
PNW
That sucks bro! I split my shin open the same way out in the waves. I went for a superman grab off a decent sized wave and didn't make it all the way back to the tray, I landed on my right shin and the impact broke it open. It was by far the most pain I have ever felt. You could see the bone, tendon, muscle and fat, it was pretty cool, at least all the interns at the ER thought so... It's cool you got some pics, I failed to do so...
 
Hirschfelt

Hirschfelt

Location
Buffalo, NY
Keep middle closed. Opening the bottom screw will give you more top end. Closing the bottom and opening the top will give you more bottom end snap. 1 screw must remain open at all times. That sucks about your knee. Only good thing is that its not May yet. Heal up.
 
TITAN

TITAN

Location
Alexandria, VA
djkorn1 said:
Set the carb screws to FP settings.

Go to the screws ON THE PIPE... middle closed. Top 3/4 turn out. Bottom 1/2 turn out. Ride it.....

turn the top screw in 1/8th of a turn and ride it. Keep doing this over and over again until it hits where you want it.
Click to expand...

So I went back out on the water today since April in attempts to get her dialed in. I adjusted the carbs as recommended in the FWP instructions and played around with the the above settings.

It is not right.....I am a complete noob at two strokes and this is pissing me off because this should be stupid simple.

When I pull the throttle, it hesitates for a second and then kicks in. It still doesnt kick in like it should. Feels like there is absolutely no bottom end. My thoughts are it is not the pipe adjustments because it is sluggash as all hell.

You have any idea or advice?
 
TITAN

TITAN

Location
Alexandria, VA
Since I am getting lag and hesitation from in the low end, do you think if I play with the adjustment of the low end screw .....it will help to narrow it down???
 
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djkorn1

djkorn1

kidkornfilms
Site Supporter
Location
Cleveland Ohio
FP settings should work...you DID change the jets to the FP ones, right? Did you change the cooling fitting off of the pump?

Start the ski up with the hood off and look for exhaust leaks.

Did you forward the timing?
 
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TITAN

TITAN

Location
Alexandria, VA
I did change the jets, and that fitting. I went out today after adjusting the low end. It seemed to be just about dialed in to where I could start playing with the pipe adjustments and then that damn water line on the bottom of the pipe came off.

I lost power at WOT and decided to quickly head back in. This being the first pipe I have installed I learned one of those little lessons from doing things. It was hell trying to get that water line on all the way when I had bolted up the pipe so......lesson learned......tighten that line on before completely bolting in the pipe.

In the end I dont think I had the low end at 1 out from closed.

Now, I gotta tear the pipe out re-secure that water line and compression check to make sure I didnt over heat my shiat too much from running without cooling.
djkorn1 said:
FP settings should work...you DID change the jets to the FP ones, right? Did you change the cooling fitting off of the pump?

Start the ski up with the hood off and look for exhaust leaks.

Did you forward the timing?
Click to expand...
 
TITAN

TITAN

Location
Alexandria, VA
Well, checked both cylinders.....both came out about 137-139 psi. Took her out just before sunset this evening. I just rode around for about 10-15 minutes.

It hooks up great and rips in the mid range. It freakin bogs down when doing a tail stand though. I mean out of the hole its okay but when landing tail in or doing a tail stand I can be giving it WOT and it just bogs down like it aint gonna jump out of the water for nothing.

I cant imagine adjusting the low end speed on the pipe is could make that much of a difference. I started back with what korn suggested above.

Do you think I need to keep playing with the carbs to get her dialed in or what? (I have them set to the FP settings)

Any advice would be appreciated. Im surrounded by four stroke couch riders so I have very limited experience around me.
 
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NVJAY775

NVJAY775

My home away from home.
Location
Gardnerville, Nevada, United States
I was told to set my pipe screws up this way for bottom end hit. I'm surprised others haven't chimed in yet on it too. Close the bottom and mid screws completely, then adjust your top screw for a couple inches of sizzle on the expansion chamber where it connects to the headpipe. Normally 1/8 to 3/4 turn out usually gets it. I use those settings in my SJ and B1 and get great bottom end hit. It will take some time, but there's a few threads on FP screw settings here somewhere, that will help explain it better than me.
 
djkorn1

djkorn1

kidkornfilms
Site Supporter
Location
Cleveland Ohio
Bottom 1/4 turn. Middle closed. Top 1/2 turn out.

As far as the carbs....just mess with the low end, 1/4 turns each way until it is right.
 
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