is anyone using stock fuel lines with mild HP numbers? i think i recall someone using stock lines. say 8-9xx hp capable of using stock lines? i have a return system now and was just wondering if possible. i think parish runs stock lines

 

I asked Jim if he had upgraded his lines after he went with new injectors.
he told me no, with his twin pumps in the tank and the high pressure
He was running he was still having some problems on the top end.
some of it he lined out with the tuning software, but i still think his
Stock lines was a little too small for that size of injector.
he may have been pushing the high pressure but the stock lines
Will still only deliver so much volume at that pressure.

it is like a point where the regulator becomes a shut off valve
sending no fuel through the return line so you can maintain
pressure and the volume through your high LB injectors while feeding
The motor at wide open throttle.

their has got to be a point where the larger injectors
Flow more fuel then what the stock line will allow.
the only options are to run a much higher pressure
Where your close to blowing the seal on the fuel filter.
or a larger line to increase the volume of fuel at
A much safer pressure.

 

From Jim's runs, we know the stock lines are good to 10.0x and <1200 rwhp.

I'm running stock lines and stock tank (may change that this winter).

 

wonder if i should do this then.. now how about using the stock line and return line to feed the motor and using the evap line as the return. I know the return line is smaller but stil would allow more fuel to pass thru then just the feed line

 

what's Blacksheep running?

 

I would never run stock rails/lines on a powerfull setup like that. Yes,people have done it but look at how many damaged motors too.

 

i was debating in the future running a fuel cell and having 8an fittings with 1/2 steel braided lines..plus it will look pretty nice, my evap line is not even hooked up on my truck now

 

not sure how many motors Parish went thru with this setup. but has proven 10.05@136 and has made 1xxx+ rwhp. but your right about the risking hte motor deal. but i wonder with meth if stock lines are possible. my biggest concern is mid 10s full weight just as teh truck sit on the street minus tires

 

low 10's, 1000+rwhp. stock lines, rails, regulator. i was also running some meth. my fuel presure did flucuate on my data logs(loged sensor voltage) but not one bit on the gauge. since then i have upgraded the lines, rails and regulator and now the fuel presure is rock solid in the log all the time. since i got away with it at that power level i would guess it is prety safe in the 900rwhp level(with meth) or maybe in the 800rwhp level without meth.

now i am running 3 pumps and -10 feed line if that doesn't do it i will voltage boost the pumps

 

Jim i was wondering after you replaced the stock lines,
are you still having the same problem on the top end,
or did it go away after you replaced the lines and did a
little more tuning?