Freestyle PFP Tuning

[NVJAY775]

I thought they came pretty much ready to rip, but have read up little bits here and there about guys restricting certain lines to adjust exp chamber temps etc...

Any takers? I'm really curious to hear how the adjustments are helping, and how much help the changes are producing.

Thanks in advance!

Jay

 

[Pablo]

I had to dry mine out quite a bit to get it hot enough. Mcdog's damn near melts the gas tank but it hits like a freight train. I'm still experimenting though.

 

[NVJAY775]

I'm going to try and dry out the water box and see how that does. Mine came with a 140 in the stinger. Where are you guys at so far?

 

[alex_hockey]

Mine came with a 120 I fully closed my fcv and added three washers as shims dried out the box a lot it Definitly helped.

 

[steve-uk]

i never touched my pipe and wish i had, i just pulled the chamber a few nights ago and it full of water, not drying out anywhere near as much as it should

 

[sicksxr07]

Correct me if I'm wrong but if you want the pipe hotter you would want to restrict the dump fitting on the end of the pipe. In which would create more pressure that would want to go thru the flow valve and into the water box so you would want to significantly reduce the jet size to dry it out but keep the outside of the pipe cool enough to have under hood temps down

 

[alex_hockey]

That's what I do, it's a dry pipe the waters in the jacket, I use a t handle valve before my pisser. I also run single cooling so the water is preheated before the pipe and have had amazing results. That's why I've had to increase the tension in the fcv aswell to keep my water box temp where I want it.

 

[smrbum]

i just bolted mine on and my water box is so hot it boils the water splashed on it

 

[kieran79]

Is everyone running 3 pissers and using same water route as on there website ?

Restricters just before pisser?

 

[Pablo]

I'm only using 2 with a large bore T for grouping two together.

 

[kieran79]

I'm only using 2 with a large bore T for grouping two together.

Do you have a diagram or pic of your set up?

 

[Pablo]

T the two lines coming off the head together. The other pisser is from the distal end of stinger.

 

[smrbum]

running mine as instructed in pfp instructions ,3 pissers 2off head and 1 off stinger

 

[Pablo]

I bought a used PFP. Where is the 120 jet located? Don't think mine came with one???

 

[NVJAY775]

If you pull the waterline off the tube, the jet should be inside the tube.

 

[NVJAY775]

Mine's a 140... But have no clue on waterbox temp yet. I think I'm going to just get a few jets and go for it. May as well have a few to adjust for different water temps maybe? Our water temps vary from between 40 and 80 throughout the year.

 

[onlyFX-1]

I switched mine up and ran 2 water lines into the head(reverse cooling) and a third water line which runs to the chamber. I have a hose clamp on the line going to the chamber which I can tighten down to restrict water. I also have a hose clamp on the line coming off the chamber that goes over board to restrict it also to warm the chamber up.

I noticed it runs better with the water box hottest, just below sizziling and the chamber a little cooler than the water box but still warm

 

[Pablo]

Thanks...good info boys. I'm looking for extra pointers on the setup. My water box never got hot before???