Power Factor Dry Pipe questions

[jetski9010]

I am starting a unique engine build and trying to figure out an exhaust setup. Is the power factor pipe limited to the superjet engine platform? Is there a certain port timing where the pipe really wakes up to? A certain engine cc size or stroker?

 

[SUPERTUNE]

Power Factor Pipe does work better the larger cc engine you have.

This pipe has weak bottom end power as any dry pipe does compared to wet pipes. (water injection helps a little, not as much as other dry pipes benefit)
As far as I know they have been used on the Polaris engines and the Yamaha 62T cased engine and some have used the chamber only, on a GP 800 engine with the waterdawg exhaust manifold.

The questions you need to ask yourself are:
#1
Can I afford the total package to make this pipe setup work successfully.
#2
I need to run MSD TL Ignition.
#3
Do I have a way to get 110-112 octane VP fuel.
#4
Do I have someone experienced to help me with this pipe setup.
(this pipe has a big learning curve to work)

 

[waterfreak]

I talked to Mark at powerfactor products and he said that they have run the pipe on just 5mm lamey stroker with stock electronics (msd enhanser+tbm flywheel) and had a great improvement over the b-pipe. You just have to prop down and adjust your carbs to the pipe.
Many of the Russian boats are running this set up with great success.

 

[SUPERJET-113]

Good thread. I would love to have one of these and ditch my B pipe someday.. What are they going for new now?

It just makes sense.. We have these big motors and run these pipes with expansion chambers about the same size as 250-400cc two stroke dirt bike chambers..

 

[HBCwatercraft]

I think its 1250.00

 

[SUPERJET-113]

Thats not a bad price at all really(after selling my B pipe)..

 

[ATS_Aaron]

#5. do I mind that I can't stop riding in the middle of the lake without the thread of flooding my engine with water? The pipe lies flat in the hull and lacks the top bend that almost all other pipes have...that top bend is what keeps water from running into the engine when you stop.

 

[waterfreak]

I just e-mail mark at powerfactor, hopefully he will chime in and tell us what we want to know.

 

[SUPERJET-113]

#5. do I mind that I can't stop riding in the middle of the lake without the thread of flooding my engine with water? The pipe lies flat in the hull and lacks the top bend that almost all other pipes have...that top bend is what keeps water from running into the engine when you stop.

I thought they had a newer version or something that fixed that??!

 

[jetski9010]

I did know that you had to run 112 octane fuel but I didnt know about needing a msd TL system. This would be a total custom setup but I found a guy that would be willing to custom make a manifold for me. You would probely laugh if you herd what motor I am trying to build.

 

[Roo]

I have been running the Powerfactor system on my Team Scream setup all summer.

Pipe is amazing. Free's up a ton of room in the engine bay, most bad ass sounding thing on the water, makes people freak out, and best of all... the power. Granted, I am running a 846CC with Total Loss, but the power band is crazy smooth. No inconsistancy like the B-pipe. Tons of power down low, mid and high. I spin my prop like crazy EVERYWHERE. My weakest link - my pump. Mag next summer for sure.

Now, for the water in the motor issue... It has been a problem for me, BUT, not when I stop in the middle of the lake and let the 'ski float. I can go to the local party zones and my 'ski will float for hours before starting it. Always starts right up and rips, no issues.

The problem I have is when taking my 'ski out of the water on my cart and rocking the 'ski front to back. Motor does not turn over nicely (water doesnt compress). A few times I have had to take the spark plugs out of the motor and turn it over a bit to find a bit of water shoot out of the spark plug holes.

If you look at the way the pipe is in the hull, the exhaust tube is on a pretty good angle in the tray, then continues on the first section of pipe (the resenator which has an outside chamber that collects water), then slants back down into the chamber. Then the manifolds slants up and into the motor. Not as straight/level as one would think.

Overall, I love this pipe. My only complaint is the gas tank situation which I hope to have something figured out by next summer when I am at 1000CC and want to do "big lake" rides.

-Andrew

 

[Roo]

btw, I do NOT run race gas - that. Bad enough I have $20k into this 'ski, I don't want it to cost a fortune in gas just to ride the damn thing. I am just an average Joe like most everyone here. I ride 3 to 4 days a week and have a mortgage payment to!

I am running 94 Octane, very few WOT runs and my timing/compression is setup accordingly by the man Supertune/Chuck himself

 

[waterfreak]

btw, I do NOT run race gas - that. Bad enough I have $20k into this 'ski, I don't want it to cost a fortune in gas just to ride the damn thing. I am just an average Joe like most everyone here. I ride 3 to 4 days a week and have a mortgage payment to!

I am running 94 Octane, very few WOT runs and my timing/compression is setup accordingly by the man Supertune/Chuck himself

So you don't have to run race fuel with this pipe! What is your compression at?

 

[Roo]

So you don't have to run race fuel with this pipe! What is your compression at?

I have never put a compression guage on this motor - no idea.

My setup is SNAPPY as hell... In my mind it has to be in the ball park of 180ish.

Team Scream built it and set the domes up accordingly.

Hopefully Supertune / Chuck will chime in and give some numbers. My guage is at my neighbors house. Once he is back in town I will throw it on there and report back if Supertune has not.

 

[Aircraftsalz]

Idok's motor is set at 200ish on pump gas, stock ebox with MSD Enh. All set up by the man "Supertune", very snappy & he's at 735cc!

 

[jetski9010]

So is there a newer updated one coming out somtime in the future that takes care of some of the problems people are having with them now like water getting in the motor?

 

[Roo]

So is there a newer updated one coming out somtime in the future that takes care of some of the problems people are having with them now like water getting in the motor?

Doubt it - I do not think it is that big of a problem that needs to be addressed, however more peace of mind would be nice though.

Don't know what would need to be done differently...

 

[waterfreak]

This is great feedback on this pipe, but it would be great to hear from somebody that is running a stock ignition set up as well with this pipe.

 

[MADMAT]

Power Factor Pipe does work better the larger cc engine you have.

This pipe has weak bottom end power as any dry pipe does compared to wet pipes. (water injection helps a little, not as much as other dry pipes benefit)
As far as I know they have been used on the Polaris engines and the Yamaha 62T cased engine and some have used the chamber only, on a GP 800 engine with the waterdawg exhaust manifold.

The questions you need to ask yourself are:
#1
Can I afford the total package to make this pipe setup work successfully.
#2
I need to run MSD TL Ignition.
#3
Do I have a way to get 110-112 octane VP fuel.
#4
Do I have someone experienced to help me with this pipe setup.
(this pipe has a big learning curve to work)

F all that all day long.......

B is still king apparently.

 

[SuperJETT]

Hunter ran one on his standard stroke Lamey powervalve engine with Enhancer ignition (I think, not total loss though) and pump gas and it ripped. He probably needed to lower the impeller pitch but it was strong.