Modding pfp chamber

Location
Uk
Hi Guys,
My mates pfp chamber has cracked and we have been running it wet by just blanking the water ports on the chamber and fitting a water injection to the manifold.

Would there be much gain in power if we cut the chamber open and remover the inner chamber then welded back up?
 

Christian_83

Xscream
Location
Denmark
@Big Kahuna this has not been done several times, removing the INNER chamber in PFP and run the outer and larger volumen chamber as wet pipe?
I have never seen it on the X, nor heard about it here :)
I did hear about it from a Aussie guy, i think he reeds here sometimes, runs a KDX with TPE 1105, said it made huge difference going from inner chamber wet, to outer chamber wet.
One of our guys in our riding group just made 2 pipes out of his, he has only testet the inner chamber, hope we soon get a review on the bigger outer chamber.
Will also get a picture of the outer chamber welded back together.
@AdzUK Did you guys test this back to back? :)

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I've done this on other pipes. I had stampings for various dry pipes over the years and welded up some outers.

Results: The powerband for the same given motor size moves up considerably. You can play with Compression, Timing, water, and Stinger size to some extent but your not going to get a majority of whats gone back. "for the same given motor size"
 
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