Jump to content
SAU Community

Recommended Posts

Hello All,

I'm building an RB26/30 with 1000cc injectors. Till what whp will I be ok with a single in tank 340LPH Aeromotive Fuel Pump?

My tuner recommends I get two Bosch 044's instead however, these don't come with an in tank option, which would mean I'd have to look into a surge tank, which I don't currently want to do.

Can I run an Aeromotive in tank 340 LPH in series with an external bosch 044 and get best of both worlds?

Thanks in advance for your help.

Sam

Have you got a chart showing how much your pump's flow drops off with increase in pressure? Quite a few people have experience with the limits of a single intank Nismo but it will be different for your pump. Have you got it directly wired with a heavier cable from the battery via relay? What is your power target? You can put 044s intank if you want. You could put a surge tank under the car if you don't want one in the boot but if you're not going to track it don't bother.

You can put 2 x 044's in the tank if you want too but space is normally the issue, we are weighing up this option with mine at the moment and leaning towards twin Aeromotives because they are smaller and quiet, newer etc.....

My single 044 ran out of flow at around 360rwkw (480rwhp) on E85 and didnt leave much buffer room incase a filter gets semi blocked etc (which i have recently experienced).

I am not much of a guru with this sort of thing, just going through it at the moment with my car and learning as i go :)

Or run the newer model walbro 415 lph e85 compatible intake fuel pump

Good for easy 400+kw at wheels

This.

You will run out of injector before you run out of pump if you go this route.

Have you got a chart showing how much your pump's flow drops off with increase in pressure? Quite a few people have experience with the limits of a single intank Nismo but it will be different for your pump. Have you got it directly wired with a heavier cable from the battery via relay? What is your power target? You can put 044s intank if you want. You could put a surge tank under the car if you don't want one in the boot but if you're not going to track it don't bother.

I'm not sure yet because this will replace the factory fuel pump on my G37. Will have to check how it's wired but I do remember seeing a relay box under my hood with fuel pump written on it.

Also, is this on 98 or E85?

98 RON

You can put 2 x 044's in the tank if you want too but space is normally the issue, we are weighing up this option with mine at the moment and leaning towards twin Aeromotives because they are smaller and quiet, newer etc.....

My single 044 ran out of flow at around 360rwkw (480rwhp) on E85 and didnt leave much buffer room incase a filter gets semi blocked etc (which i have recently experienced).

I am not much of a guru with this sort of thing, just going through it at the moment with my car and learning as i go :)

Oh wow, and that's a very high flowing pump. Looks like I'm going to rock two of them then. Do you keep me posted with your learning please. The thing is, it's never been done on a G37 before, so I'm not sure how everything will play out. Let's see.

Or run the newer model walbro 415 lph e85 compatible intake fuel pump

Good for easy 400+kw at wheels

My tuner recommended me against Walbro, is the 415lph any good?

This.

You will run out of injector before you run out of pump if you go this route.

Guess I'll have to look into it then. Thanks for all your help fellas

I haven't seen the G37 fuel pump assembly, but if it's the same as the 350z/V35 ones only the Walbro 342 style pumps will fit in the factory housing. I would go for the Deatschwerks 300L in that case.

There are a few twin pump housings around for them, but perhaps you could modify the stock housing to fit the new Walbro 400L E85 pump? If your tuner doesn't like them, he is a year behind the times...

Nismo/ tomei will flow around 400rwkw on pump depending on who's tuning the car

The walbro's 400s seem to be the sh!t now, I've been running 2 of them in a surge tank with e85 for about 3000km and no issues so far. They are quiet as hell too

As for putting one in the tank, I don't think they are an easy fit like the 044s.. If my memory is correct Piggaz tried putting one in but opted for a 044 as it was less hassle

I went with 2 bosch 044's in an almost identical setup to Paul aka Piggaz set up. the fuel system should have landed me somewhere in the 1500 mark once completed, for rail, pumps, tank, lines, injectors and new reg. Not too expensive for peace of mind mate.

i like to shop around Joey ;) I have only the fuel rail and reg to purchase. 600 for bosch 2000cc, 300 for pumps, 330 for the tank and fittings. I may just pip the 1500 mark, but not by much mang

You're definitely getting some great deals man.

May I ask where you guys normally install your surge tanks? Another reason I stayed away from it was that many told me you get a lot of fuel smell in cabin?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • just an update to this, poor man pays twice  Tried sanding down the pulleys but it didnt do the trick. Chucked another second hand alternator in the na car which I got for free off my mate and its fixed the squelling. Must have been unlucky with the bearings.    As for my turbo car, I managed to pick up a cwc rb alternator conversion bracket + LS alternator for 250 off marketplace, looked to be in really good nick. Installed it , started the car and its not charging the battery.... ( Im not good with auto elec stuff so im not sure if this was all I needed to do but I verified such by using a multimeter on the battery when the engine was running and I was only getting 12.2v )   I had to modify the earth strap for the new LS alternator , factory earth strap was a 10mm bolt which did not fit the bolt on the LS alternator which was double the size so I cut it off , went to repco bought some ring terminals that fit, crimped it onto the old earth strap and bolted it up to the alternator , started the car and same issue. Ran like shit and was reading 12.2 at the battery.  For a "plug and play" advertised kit thats not very plug and play but alas.  My question is , am I missing something ? Ive been reading that some people recommend upgrading the stock 80 amp alternator fuse to a 140 amp but I dont see how that would stop the alternator charging especially at idle not under load.  Regardless ive pulled it out and am going to get it bench tested by an auto elec tomorrow but it would be handy to know if ive missed something silly or have done something wrong.   
    • My wild guess is that you have popped off an intake pipe....check all of the hoses between the turbo and the throttle for splits or loose clamps.
    • Awesome, thanks for sharing!
    • To provide more specific help, more information is needed. What Android screen? What is its wiring diagram? Does the car's wiring have power at any required BAT and ACC wires, and is the loom's earth good?
    • So, now all you need to do is connect the 2 or 3x 12v feeds into the unit to permanent 12v, ACC 12V and IGN 12V that you can find in the spot behind the stereo, and the earth, and then it will switch on with the car.
×
×
  • Create New...