EME SJ Dry Pipe Pics

RiverRat

.......
Location
Louisville, Ky
I don't think it is that loud. Sounds great IMO. I did not have the idle set in the vid and the ski is not even tuned. That is just the initail start up.

The weird problem I was having was the starter itself was spinning backwards :ugh2: We compared mine and darins and sure enough mine was turining the opposite way so the bendix gear would not enguage.

I will take it out tomorrow afternoon. May or may not have video. I don't know if anyone will be with me.
 

GIL

Power In The Hands Of Few
Location
Cullman AL
Here is all I have gotten out of this so far, the EME adds 20% more hp than a B, wait, or is it 20hp more than a B? If it's only 20%, which is adding 4hp, than why bother, if it's 20hp give or take 5, then well worth the coinage.
 

RiverRat

.......
Location
Louisville, Ky
Here is all I have gotten out of this so far, the EME adds 20% more hp than a B, wait, or is it 20hp more than a B? If it's only 20%, which is adding 4hp, than why bother, if it's 20hp give or take 5, then well worth the coinage.

I will let you know tomorrow afternoon. I will say that I can already hear the thing rev better than it did with the b-pipe. It needs to be tuned but it feels/sounds stronger as you go up in the rpms........and that is with zero tunning......on the trailer. I am comfortable saying that b/c I have run this motor for the last couple years and know it pretty well. Just a observation though, not trying to get ahead of the game b/c how it performs in the water is what counts.
 

GIL

Power In The Hands Of Few
Location
Cullman AL
I will let you know tomorrow afternoon. I will say that I can already hear the thing rev better than it did with the b-pipe. It needs to be tuned but it feels/sounds stronger as you go up in the rpms........and that is with zero tunning......on the trailer. I am comfortable saying that b/c I have run this motor for the last couple years and know it pretty well. Just a observation though, not trying to get ahead of the game b/c how it performs in the water is what counts.


Glad to hear. I honestly was not trying to be negative and I sincerly hope it is +20hp. How cool would that be.?.?. We have been tied to the same old stuff for soooo long that it aint even funny. Not that anything is wrong w/the old stuff. I really am glad to see all the builders really steppin it up!
I hope u come back and say the EME is the new 'must have'. We are long overdue new stuff.
 

SuperJETT

So long and thanks for all the fish
Location
none
Here is all I have gotten out of this so far, the EME adds 20% more hp than a B, wait, or is it 20hp more than a B? If it's only 20%, which is adding 4hp, than why bother, if it's 20hp give or take 5, then well worth the coinage.

That 20% is what one person said it felt stronger by, it's not a hard number from a dyno.

Like you ride my ski, then I put a Powerfactor pipe on and you ride it again and it feels 20% stronger in the midrange. So it's not hp, torque is what accelerates you.
 
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RiverRat

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Location
Louisville, Ky
Took it out for a few minutes today. Had some more odd troubles. I overheated my cylinder b/c one of my cooling lines is not working??? It is clear, all lines are hooked up but no water? That took some time to diagnose and fix but I got it back in running condition. I had to just run single cooling on this set up b/c of that so I know I can rework the cooling set up later and optimize that aspect.

I stared very slow on tunning the ski. I set the carbs really fat b/c I did not know how the exhaust would effect the carburation throughout the rpms. You can hear how rich it is in the first section of the clip. After that I started leaning the carbs out, cleaning up the throttle response and picking up the power.

Off the bat I can tell that the mid range power is stronger and the motor wants to rev higher. Bottom end seemed snappier with teh b-pipe, but as I said, this was just the first run. I was only on the water a few minutes but I did notice the powerband shifted up a little. In all fairness my cylinder was ported for more midrange power so it either shirted the powerband up a little OR simply optimized the cylinder porting. I need more time to work on it to sort that out.

I like it so far!!! My b-pipe was heavily modified and just on the first run the PFP pipe beats it in the mid and top. I also want to add this is on stock electronics (flywheel and CDI). I think if I did some timing adjustmensts with a better cdi and a TBM flywheel or MSD TL.....this would be a nice set up.

YouTube - Power Factor Products exhaust test
 
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SuperJETT

So long and thanks for all the fish
Location
none
It didn't sound overly loud on the video. Noticeable difference from your previous set-up?

It's quite a bit louder IMO from standing on the shore, his gf noticed it too. More of a bark now.

Due to having to change his water routing at the ramp just to be able to ride, it may not have had much water going in the stinger, so we'll see how it ends up.
 

RiverRat

.......
Location
Louisville, Ky
Might take it out again today to try and clean the power up a bit.

Took a couple stills of the video. I could get that height with my b-pipe as well but I think the marriot is a good trick for comparing power. Not technical, easy to repeat and the more power you plant the higher it goes. Can't wait to get it dialed in. Only a couple more rides before it gets too cold.
 

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Big Kahuna

Administrator
Location
Tuscaloosa, AL
Were you asking that as a legit question or were you just being a punk trying to start sh$#?

Now that you phrase it that way.............


only pics I ever see are big throws........ Just an honest question.

My rolls suck as well. Just cannot get them all the way around. Not enough speed in my rotation.
 

RiverRat

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Location
Louisville, Ky
Modified the kart tank a little. I ended up having to turn it around, epoxy a plate on the back to mount the fuel pump and strapped it to the motor. It is a tight fit but seems to clear everything and stay in place. One strap connects to a hook under the pipe, the other connects to a hook mounted on the flywheel cover. If doing a perminant set up I would reccomend installing perminant mounts to the hull and not hooking it to the motor. I think over time it could damage the cases if the strap it too tight
 

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RiverRat

.......
Location
Louisville, Ky
Update

Took the ski out a couple more times and the low end power was just not happening. Every carb adjustment i made would just seem to make it worse no matter what direction it went. Mid range power was still good but only about the same as my b-pipe.

To me it was acting as though there was too much water in the exhaust or the exhaust was being too restricted, as if there was a clog. I remember when superramjet's exhaust tube melted inside the hull and he spent the better part of 2 days trying to figure it out. On a hunch, I replaced the resonator (creates back pressure) with a straight peice to tube and the ski instanly sounded better on the trailer. Took it out today and although it was infact much snappier off the bottom and pulled better in the mid, it still did not seem quite right. I honestly was thinking the b-pipe was better.

However, I decided to pull the cylinder head to see if I was leaking water into the cylinder for some reason. Bingo! :cheer: I guess when I over heated the cylinder b/c clogged cooling line on the first run it messed the o-ring up just enough to leak and cause that low end bogg. I will run the ski again soon with the resonator and hopefully see a better increase in power.

Props to Pat at X-MetalWorks for brain storming with me on the phone.
 
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