replaced lift pump with TRE-340, should i get rid of the external?

[Gruelius]

hey all

is it bad to have two high pressure pumps in series? ive gotta pull the pump to fix the soldering that got done failed

http://www.youtube.com/watch?v=5vVGzhSFdT8

anyway is 2 pumps better than one? ive been told its better to run one as the 2nd one could get rooted or something idk...

if i convert it to a single pump id be just running 8mm over the top of the tank, will just have it as rubber hardline the whole way though.

[nando]

no, it's fine. it actually makes life easier on the second pump. I'd leave it, especially if you have any future high HP goals.

[Gruelius]

yeah cause i have 3 year old external, only concern of mine was the old 12mm line being run at high pressure. guess it makes sense to stick with the 2 pump setup.

[nando]

just make sure the fuel hose is new and rated for fuel injection and it will be fine.

[Gruelius]

problem chief, doesnt that 12mm hose need the tank to be dropped to be changed?

i could see myself snaking 8mm hose above the tank but 12mm?

[nando]

pretty sure all the hoses that go between the tank/car are hard lines and the rubber hoses just connect to them?

[Gruelius]

nah the transfer pump is a 12mm rubber hose that runs the full length of the tank which SUCKS otherwise i would have replaced that shit!

[nando]

if it's in good shape I wouldn't worry about it too much. it's already FI rated.

[Gruelius]

yeah, i hate the crimp clamps they have on the line, but if those are FI rated itl be sweet. but yeah no fraying/cracking/bulging on the old line.

[Gruelius]

decided ill just go the single tre 340 for peace of mind.

Does it matter that there is no flared fitting when putting it into the series 2 pump holder? shit looks ghetto as



or is it dangerous to just have 8mm hose flopping about above the tank? i dont got no hardline above le tank

[Gary Horneck]

I have the same fuel pump. What size hose is that connecting the pump to hard tube? The one that came with the TRE split. The outlet on the pump is a smaller than the tube so it was a stepped fitting, and I can't get fuel line to fit tight on pump outlet if it fits over the hard tube.

[immajackuup]

so the fuel pump was like yo lets increase the operating pressure to approximately 3 BAR and then the fuel was like fuck your couch nigga im gettin the fuck out this mothefucker