Freestyle Powerfactor pipe on 760?
- Thread starter crf250r
- Start date
- Location
- St.catharines, Ontario
B- pipe would be better, powerfactor is for a much larger engine
D-Roc
I forgot!
- Location
- Dirty River Rider
i thought the powerfactor was better on any motor, making more power on all setups compared to a b-pipe. just like a drypipe should. peak hp is higher than the wetpipe. the thing was, a drypipe was hard to install and wrench on and stay together for freestyle, hence everyone used the lesser hp b-pipe for freestyle. the powerfactor was supposed to be the solution from my understanding.
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- Location
- St.catharines, Ontario
if you plan on using that set up for freestyle, the PF will kill your bottom end power
D-Roc
I forgot!
- Location
- Dirty River Rider
really? even with a total loss? i don't know and thats why i am asking. i would have thought a drypipe would make crazy mid and top and a good pump setup with a tl would give the bottom end hit one would like to have for freestyle.
- Location
- Central FL
Dry pipes are the way to go. More power everywhere. With some setup on water injection a dry pipe can't be beat. They are also 10x easier to install then a b pipe. At least the octane dry, type 4, powerfactor, and wdk pipes are 
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- Location
- HOLLAND MA.
Stock cyl? Or dasa..are u using total loss, race fuel? These will be factors.
Dry pipes are the way to go. More power everywhere. With some setup on water injection a dry pipe can't be beat. They are also 10x easier to install then a b pipe. At least the octane dry, type 4, powerfactor, and ask pipes are
Some say the power factor is a type 9 laying on it's side .... any truth. Why are B's so prevalent in our sport and used / suggested by many builders / damn near all builders.
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Aircraftsalz
Thrust built Dasa Power
- Location
- Off site
IMO if your going to try the powerfactor it needs to be on a PV based motor with atleast 850cc. The new powerfactor waterbox has really helped the bottom end & makes the ski sound like a B pipe so it keeps people happy at the lake.
But there's a lot to making this pipe work, timing, prop, reduction nozzle, etc, etc to really make it work....
760 Stick with a B pipe
But there's a lot to making this pipe work, timing, prop, reduction nozzle, etc, etc to really make it work....
760 Stick with a B pipe
- Location
- Central FL
the original powerfactors were just that. a type 9 cut up. right now they are a little different then a type 9. if you can find a speedworx freestyle pipe that is a great pipe. are you running a stock 760 or a 62t based big bore?
engine builders recommend the b pipe because of simplicity and because it's what everybody does... this sport is about bandwagons. the b pipe is hype in my opinion. it works good, but far from a well performing exhaust. i ran a dry pipe on my octane for a season not once did i have a problem with couplers. had a problem with the b pipe once though.
prop selection, timing, and reduction nozzle play just as much on a b pipe. the difference is 95% of the people on this board use the b pipe so the setups are way more common and people share information on it more readily.
if you take the time to make sure your pipe is aligned properly the first time it will be trouble free. if you setup a crude water injection you'll have almost the same bottom with crap tons more mid and top.
engine builders recommend the b pipe because of simplicity and because it's what everybody does... this sport is about bandwagons. the b pipe is hype in my opinion. it works good, but far from a well performing exhaust. i ran a dry pipe on my octane for a season not once did i have a problem with couplers. had a problem with the b pipe once though.
prop selection, timing, and reduction nozzle play just as much on a b pipe. the difference is 95% of the people on this board use the b pipe so the setups are way more common and people share information on it more readily.
if you take the time to make sure your pipe is aligned properly the first time it will be trouble free. if you setup a crude water injection you'll have almost the same bottom with crap tons more mid and top.
Dry pipes are the way to go. More power everywhere. With some setup on water injection a dry pipe can't be beat. They are also 10x easier to install then a b pipe. At least the octane dry, type 4, powerfactor, and ask pipes are
Couldn't have said it better. Dry pipes are a little more finicky, but once you have 'em set up...they rock. I did back to back tests on an engine running a b-pipe with the type 9. Both pipes were set up the way I like them with the b-pipe running very dry with the addition of the top screw adjustment for best response. The type 9 was leaps and bounds ahead of the B-pipe. 740cc engine running total loss, posrting and 13/17 impeller.
If you don't like tuning and trying different jetting/water/timing combo's, stick with the B-pipe. I run one at the moment for convenience, but am switching with an older dry pipe to chase more mid.
- Location
- Connecticut
i was advised against using a pf pipe on anything less than a 800cc pv apparently it burns the pistons