Limit Of 2 X 044's On E85

[N1GTR]

Ok now this thread is well and truly gone off topic.

Me;

HKS GTRS's

OS Giken R3C

Tomei procam 270 10.25

Paul;

HKS GTRS's

NISMO c spec twin

Tomei procam 270 10.25

Every bit of info you want is already on the forum in various threads, start with the dyno result threads in this section which are even stickies up the top.

[Piggaz]

My clutch hasnt got any issues... It held well with the 8000 RPM launch up the street the other night!

[Super_Dude]

So high 500kw seems to be the limit when running ID2000's + 044x2?

[600hp]

yeah it would be good if we could all agree on a limit

[Super_Dude]

I've got x2 044 w/ tomei lift pump and I'm buying some 14mm id2000's.

RB30 + new EFR8374 + E85 should be an interesting combo.

[WHITER33GTS-T]

Any updates with 044 pump setups...?

Im looking at going E85 and was thinking about id2000s.

Who else is running 2000ccs and what are they like as my car will be driven on the street a fair bit.

[XRATED]

You guys need to stop fkn around and grab somthing like this....

http://www.weldonracing.com/product/20-6/2345-A__%28-12_inlet_and_-10_outlet%29.html

[FineLine]

No way would i ever rely on a single pump for a high hp outfit.

Twin pierbergs for me, they outflow the 044's by a wide margin And at least there is some insurance if one shits itself.

[bigmikespec]

No way would i ever rely on a single pump for a high hp outfit.

Twin pierbergs for me, they outflow the 044's by a wide margin And at least there is some insurance if one shits itself.

Twice as many things to go wrong with two pumps. Especially two of lesser quality compared to a Weldon; plus you could get the Weldon rebuilt every xxxx kms.

[scotty nm35]

Is the Weldon a brush motor? It will need rebuilding then. Is anyone running the new brushless pumps like the Aeromotive or Fuelab? They look like the go for 400 to 800 lph and less than a third of the Welden price.

[rob82]

This is a pointless thread as it depends on what the engines BSCF. Some setups will be lots more efficient at converting the fuel to power. I have made 560rwkw on a dyno dynamics dyno that reads lowish with 6 x 880cc injectors with 2x044 and still had enough margin in the tune for more.

[SimonR32]

No way would i ever rely on a single pump for a high hp outfit.

Twin pierbergs for me, they outflow the 044's by a wide margin And at least there is some insurance if one shits itself.

I look at this another way. If you have twin pumps, one dies without you warning. Cars seems to run fine but is running lean and pops the motor. Running a bigger single pump and it fails you will know about it as the motor will stop

Mind you if we ever get E85 on pump in WA i will probably be forced to run twins, twin in-tank walbros will probably get the tick

[scotty nm35]

Other than they flow nothing at 80psi. Walbro HP's are better but those aeromotive walbro style ones seem the go for intank.

[O2 Autosports]

For those using the factory hicas lines for fuel lines, whats the best way to connect to them?

[XRATED]

Is the Weldon a brush motor? It will need rebuilding then. Is anyone running the new brushless pumps like the Aeromotive or Fuelab? They look like the go for 400 to 800 lph and less than a third of the Welden price.

The aeromotive gear is veeery noisy... but most importantly ALOT of guys in the US runn them and have to send them back/ warranty/ replace them on a regular basis.. If your pushing 1000+hp at the crank, then you will be re-building your engine more often than the fuel pump.... hp costs money!

I look at this another way. If you have twin pumps, one dies without you warning. Cars seems to run fine but is running lean and pops the motor. Running a bigger single pump and it fails you will know about it as the motor will stop

Mind you if we ever get E85 on pump in WA i will probably be forced to run twins, twin in-tank walbros will probably get the tick

This is my argument.... Iv'e seen it first hand. Two bosch pumps on paralell, one shtis itself and the other tries to pick up the slack.... it\s only lean right in the top end (the most important/ dangerous end) of the power curve. Especially if there's no non-return valves fitted!!!

For those using the factory hicas lines for fuel lines, whats the best way to connect to them?

Cut the ends off, slide a flare sleve and nut, flare the end and hey presto you have a female flared coupling.... then use any (correct size) AN or dash male fitting.

[SimonR32]

Other than they flow nothing at 80psi. Walbro HP's are better but those aeromotive walbro style ones seem the go for intank.

200L per hour at 80psi, so in twins would flow 400L per hour

On a 6 cylinder that's enough to feed 1100cc injectors!

Not exactly nothing...

Edited March 19, 2011 by SimonR32

[scotty nm35]

They are right at their limit, the graph here shows it. http://www.skylinesaustralia.com/forums/topic/357584-aeromotive-340lph-and-deatchwerks-300lph-in-tank-fuel-pumps/

Running them past 80psi causes cavitation, the pump cant suck any more fuel up and gas bubbles are produced by the vacuum, this will shag the pump bearings and impellers. Only a problem at over 30psi unless your base pressure has been bumped up...

The large Aeromotive pumps have had bearing problems in the past, they have the same cavitation issues unless you run -8 lines minimum apparently.

[SimonR32]

Don't look at the Walbro 255l graph, no one should be stupid enough to use one of those!

The GSS-342 pumps are the 255l HP line on the graph you posted and still even flow 175l/hr at 90psi

Plus as you said any skyline running less than 2 bar would be more around 70psi pressure

[O2 Autosports]

Cut the ends off, slide a flare sleve and nut, flare the end and hey presto you have a female flared coupling.... then use any (correct size) AN or dash male fitting.

Got any pics?

[Beer Baron]

nath, flaring the ends of the hicas lines so you can run a regular AN male fitting is the go, BUT the hicas lines are farking hard to flare. you need a decent flaring tool to do it and probably have to heat the line up a bit too. I'm not sure that I could get a nice flare on them. failing that plenty of people just use the tool that gives you are raised bump around the circumference and then run a push on type fitting with hose clamp. not ideal but they will work if done right. if your flaring for the AN coupling make sure you don't forget to slide the nut on first!!