vp-44 and big injectors question

[rpainter]

I guy who I pull with has a 01 witha hot rod vp-44,stock crossover tubesand lines. a fass fuel system,single 66 turbo and just installed a set of scheid lightening 4's(I think) they measure 6x.018. my question is last night at the track when getting the sled moving he has a lot of popping at the first 100 foot after that the truck ran strong. he is running a smarty and tst stack. I assume that the popping is froma lack of fuel pressure correct? If so how to fix it? Monster pump,edm crossover tubes or bigger lines?? I know he needs water on that truck had a good 6" flame out of both stacks:bang let me know what you guy think so we can get rid of the popping down low. Rob

 

[Tcolesanti]

Turn the FASS up to 25-30psi and put the oversized crossover tubes in it.

-Tom

 

[rpainter]

Turn the FASS up to 25-30psi and put the oversized crossover tubes in it.

-Tom

do you think the monster pump is needed or just the connector tubes only? and where can he get a set ?

 

[Tcolesanti]

Get the tubes for now, and you can get them from Scheid. We found that the tubes were needed for anything bigger than a 7x.014 injector, so yeah you should at a minimum need the tubes, but maybe try a set of oversized lines as well.

-Tom

 

[rpainter]

Get the tubes for now, and you can get them from Scheid. We found that the tubes were needed for anything bigger than a 7x.014 injector, so yeah you should at a minimum need the tubes, but maybe try a set of oversized lines as well.

-Tom

he has a set of.093 lines but does not line the radicial lope of the truck with the lines on. Rob

 

[Tcolesanti]

Try them with the big crossover's, it should be fine. Is this truck an auto?

-Tom

 

[rpainter]

no a manual with a fresh DD from valair.

 

[mclunas]

sound like this?
http://s210.photobucket.com/albums/bb196/cumminspwr01/?action=view&current=morganpull008.flv

 

[rpainter]

sound like this?
http://s210.photobucket.com/albums/bb196/cumminspwr01/?action=view&current=morganpull008.flv

nope worse plus he is leaving the line about 3000 rpms. sounds like a CR when it runs out of rail pressure.

 

[mclunas]

this is about the worst pop ive ever had and the only thing i can figure is i was runnin against the rev limiter... that was the chittiest loosest track ive ever pulled on:bang

http://s210.photobucket.com/albums/bb196/cumminspwr01/?action=view&current=015.flv

 

[Tcolesanti]

The popping could be too much timing with not enough RPM. Maybe try turning the timing from the smarty down? I ran a few stacks, always with a redline and never got any popping unless I was spinning in excess of 4K and the pump electronics could not keep up.

-Tom

 

[CoalRoller01]

What are these cross over tubes that Tcolesanti is talking about?

 

[jessmeistertc]

What are these cross over tubes that Tcolesanti is talking about?

tubes that connnect the lines to the injectors. upgrades can be a .093 or .120 tube.

 

[Kman9090]

I didnt hear that much popping

 

[CoalRoller01]

tubes that connnect the lines to the injectors. upgrades can be a .093 or .120 tube.

I thought those were the bigger injector lines...or are they considered the same thing???

 

[Grainfarmer]

Just kinda curious if you know what the EGT`s are runnin with a 6 inch flame ? IMO don`t think that stock lines and stock crossover tubes are enough to support fuel to a set of 6x.018`s. More fuel should put the flame out. Could be wrong I`m a P-Pump guy.