need info on tuning a 771 with powerfactor

[E_T_03]

first please dont tell me to buy a bpipe for my setup instead of a pfp.
my setup is
771 with twin sbn46 and powerfactor. impeller is solas concord 13/17
planning on adding an epic or msd enhencer before my setup will be ready.

need some info where to start with jetting and pop off

for people who will ask, the reason im buying a pfp is that factory pipe is out of stock, im planning on buying bigore next summer, buying an xmetal bpipe will get me with the exchange rate and costum at the same price a local guy sell me his pfp.

 

[Big Kahuna]

contact @zeski25 he ran a similar setup a few years back.

 

[txsuperjetfreak96]

i can give your the jetting specs that ed gave me for my 771 setup. pretty close to same as your except im running 48 fullspec, advent ignition, 155mm oem pump. not sure if the size of carbs the jetting would b different or not.

 

[E_T_03]

how did you like that setup txsuper?

 

[txsuperjetfreak96]

Idk yet working on putting it together now


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[txsuperjetfreak96]

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[Dartman]

full spec carbs will use bigger main jets than sbn 46's
start by dropping main to 120-122.5
2.0 needle seat is fine
you dont need the special 1.8 that ed uses in full specs
use no less than an enhancer cdi- forget the epic-its too hit or miss running problems
run enhancer advanced a little at the stator
msd tl would be really the way to go with the pfp pipe- it likes a lot of bottom end timing

 

[yamanube]

I will be running dual 46s with a Type 4 dry pipe and will be starting at: 105Main(maybe 110?) 130Pilot 2.3NS 95g spring

 

[clouse22]

Reverse jet ( this was just a tad rich on my 754cc 62t/61x with B-pipe) I was ready to jet down on the lows...My jetting on my xscream ss900 was the same for b-pipe and pfp

I would Start at

120L 1.5 turns out
110H. 1.0 turns out
2.3 N/S
One thing I cannot remember is the spring...it's either an 80 or 95 I'll try to find out

 

[keith t]

Forget the MSD enhancer, you need a programmable set up to get the beat out of these pipes

 

[E_T_03]

I think i will try that first. I will let you know how it goes.
My riding buddy have 1st generation of epic and it work really good.
I heard some were failling sometime but some msd to are failling

Reverse jet ( this was just a tad rich on my 754cc 62t/61x with B-pipe) I was ready to jet down on the lows...My jetting on my xscream ss900 was the same for b-pipe and pfp

I would Start at

120L 1.5 turns out
110H. 1.0 turns out
2.3 N/S
One thing I cannot remember is the spring...it's either an 80 or 95 I'll try to find out

 

[cookn]

I think i will try that first. I will let you know how it goes.
My riding buddy have 1st generation of epic and it work really good.
I heard some were failling sometime but some msd to are failling

This is close to mine as well, sbn44 aftermarket with vforce3 61x/62t bpipe msd enhancer
125 pilot 3/4 turn
110 main 1.5 turns
2.3 N/S
95 gram spring for 19psi
This setup is working well for me

 

[cookn]

Try the carb jetting data base and look for similar setups as yours, Thats where I got my specs

 

[cookn]

http://www.x-h2o.com/index.php?threads/carburetor-specs-database-superjet-and-blaster-1.19403/

 

[E_T_03]

newb question, is pilot the small jet and main the big jet?

 

[bobob729]

yes it is