Freestyle new rrp carbon pipe

Here's what I've been working on the last couple weeks. It's going to be an up and over pipe, similar to the half dry pipe. I'm adding a coupler after the dry section. This way I can try different chamber sizes. I'll be working on the dry section next...image.jpg
 
Location
Stockton
Im running a 701 with Jetworks porting and carb mod, will my motor be enough for this exhaust??

The instructions say recommended for 900cc and above.

In my ski with 1 1/2 inch of padding below water box and sitting on my former battery perch mounting plate it let's water backup into the engine real easy, the water box is not baffled and it's real small, the elevation difference between the boxes inlet and outlet is nil. Gonna try and raise the water box 2 to 4 more inches and use a pre molded curved hoses and bent tube on its outlet to try and mitigate the issue. Can't go in surf right now with this thing. Can't deep water board the ski without first starting the engine, gotta leave engine on when loading onto trailer. I talked to one team and they have this issue too and another guy doesn't, his set up is the same layout as mine via photos he sent me.

So I'd be more concerned about this in the surf

Solution might be simple, won't know until it mod it later this winter
 

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NVJAY775

My home away from home.
Bummer guys are having water intrusion issues. Harbor hit me up on mine and I sent him some pics. When I deep water start, I fire it and side mount. It's nearly impossible to mount her from the rear, as she's small and tipsy lmao! Plus IMO side mounting is much faster when in rough water, or any water for that matter. Honestly I've had zero issues with water getting back to the motor.

And for the OP. I'm not sure why RRP and PFP say to only run them on big cc motors. I ran my old PFP on my old 781 and it killed my FP Limited setup. Granted I had to do some pump tuning, but it was awesome. That being said the RRP should work even better. My son ran my old PFP on his 781, dual 38's, solos mag, and running a pump gas setup... We knew we had to prop down ahead of time, but still... It out performed the FP Limited setup. If you bump the compression to 190 to 225 and run some race gas, you'll love it even more. And TL etc..

When I was building up my power train, I did the motor last. I did carbs, intake, TL, pipe, pump etc... Before getting a TPE 964. And honestly, I'm happy I did it that way. If I had all the cash at once I would have done the whole package. But doing it the way I did, I also learned a lot about tuning. And I have a lot more to learn, but picked up a ton of invaluable knowledge along the way.

Brraapp on fellas!
 
Deep water starts on my Evo have never been a problem, I can have it idle or dead and just push the gunwales down, stick a knee in the tray and hit the start button.
 
Location
Stockton
@River Rat. Thanks for asking for others Expediance, I see 3 so far have no issues yet, that's great

@badvinny and @NVJAY775, thanks for the pictures you guys sent and or posted helps me much, and nvjay775 for the side start info

@skinnyman thanks for reply as well

My first incident was on deep water restart, I normally board from the rear with the b-pipe, start and ride away.

I boarded as normal but it injested water and fouled the spark but cranked ok. On subsiquent Try's finally locked with water.

After clearing the water I kept the engine running at all times while riding and never let go of the bars even when upside down in the water. No issue and finished the day. The wife was with me on shore incase I got stuck so loading went quick and was able to blow out exhaust while loaded on the boat ramp

Next ride I kept the engine running while in water and kept blowing the exhaust out while heading to shore to rest and parked ski quickly with noise up. No deep water reboarding, rested on shore and refilled fuel multiple times no issues.
When I left I let the ski float in the reads for a few minutes while I got my truck, loaded the ski and tried to blow out the exhaust and same thing, injested water. I suspect water was in the chamber and when I raised the nose of the ski onto the trailer in flowed into my cylinders, most in the rear cylinder.

The water line to Box is 3/8 and seems like a lot of water for such a small box so I added a 2.5 seat to the line to reduce the flow. On my next trip I camped and road without issue for 4 or 5 days, and added when I deep water board I start the engine first before I touch the ski then board via the rear and ride away, I can stop and rest in the middle of the lake if I restart this way. When parking ski I blow out the the water box repeatedly while almost at the shore, then restart the engine and blow out the exhaust while on the stand, same when loading on trailer except I restart it and leave the engine running.

Now I'am carrying with me plugs and a wrench in case I get stuck plus in the truck. jumper cables, battery and fuel start bottle so I can clear a flood on the spot.

This is too unreliable for me so I need to fix the issues.

I took another look at my set up, Ive also looked at the water line on the outside ski while its floating and translated that to the interior. Looked at pfp power box, xcreams tall box for the pfp. These two boxes I like because their is more distance between the inlet and outlet specially the Exceam but have been told these boxes are baffled not open like the RRP.

After these response today I looked again. @badvinny your box looks mounted higher in the hull than mine while @NVJAY775 is low mounted like mine.

If I had not deep water tray mounted I might have not known I had an issue.

A local shops competitor has the same issue as me and the shop said they mitigates it thru riding technique.


I don't like how small the box is but think raising it in my hull above the water line as much as possible would help I'am guessing.
image.jpg This white ruler represents the top of my bond line and the water line is touching the bottom of the bond line while the ski floats in calm water. 70% of my exhaust tube exisiting the water box is below the water line. The water box is 60% below the water line and the stinger is 30% below the water line.

This I suspect allows water to be in the bottom of my pipe which is not an issue until the noise is raised and tray lowerd on an engine off deep water rear mount or raising the noise to trailer it.

In the surf I'd be screwed!

So the first plan is to raise the box and the stinger 2+ inches and re-test.

Personally Id rather have the Excream box for pfp modified for the RRP pipe
image.jpg

So for now the issue may be more on set up
 
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Byeai

"Cheetos-Man"
Location
Melbourne FL
I have a honest question why dont you put the ski on its side when deep water mounting start it and side mount
Flat water boats with pfp rrp most ppl tilt the handle bar with start stop in water and start ski so the water doesnt go into motor
Ive locked up a dasa 1200 and then finally learned to tilt it and never have done it again

Sent from my SAMSUNG-SGH-I337 using Tapatalk
 
Location
Stockton
I have a honest question why dont you put the ski on its side when deep water mounting start it and side mount
Flat water boats with pfp rrp most ppl tilt the handle bar with start stop in water and start ski so the water doesnt go into motor
Ive locked up a dasa 1200 and then finally learned to tilt it and never have done it again

Sent from my SAMSUNG-SGH-I337 using Tapatalk[/

I should learn to do that too, thanks for telling me, I didn't know you all did that, except for nvjay775 mentioning it. I'll add that too, thanks you @Byeai
 
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