Definitive Guide To Building 300-330awkw Gt-r

[Piggaz]

Ditch the timer. The only place one of those things are good for is in a landfill.

[GTRsean]

Agreed, unless you are running an 80's setup, bush bearing with no water cooling!!

[nitestage32]

Isnt the 044 pump a EXTERNAL FUEL PUMP?or are you guys saying its easily done do to put it inside the tank?abit confused

GTR r32 btw

[nitestage32]

What do you guys think of the DENSO fuel pump 305ltr ?

http://www.trademe.co.nz/motors/car-parts-accessories/performance/fuel-systems/auction-392534057.htm

[Deano 1]

ive been making 300kw with my engine for years now, never had a problem, and i trash the ass out of it

[SiR_RB]

cant go wrong with nismo/sard/tomei direct drop in fuel pumps like others have said

but there is a guide in here how to make an 044 intake

[nitestage32]

Can anyone comment on the DENSO pump ?

[N1GTR]

Isnt the 044 pump a EXTERNAL FUEL PUMP?or are you guys saying its easily done do to put it inside the tank?abit confused

GTR r32 btw

Ive lost count of the GTRs using 044's without problems.

Being external doesn't mean anything in this instance.

There is a DIY on these forums about it, have a search.

You'll probably get one for $230 delivered, they're renowned around the world to be a good pump, and easily do enough flow for when you rebuild your engine later on (and of course will do your current target), so I don't see why you'd bother with denso. 044's are available from sau forum sponsors very easily. I have a feeling denso are used in supras-I'll find out soon enough when upgrading mine

[GTRsean]

Had a 044 in tank setup in my old 32GTR. Had to spend more $$$ on fittings.... They work well and I never had any issues with it being the only pump and in tank.

Just bought a Nismo fuel pump for the 34. Paid about $450 for it, drop in replacement. 9615 is the only number on the pump itself, and came with nismo paperwork, in Japanese of course...

I have been told they are the same as Denso, made by Denso as well.

Only bought it because I wanted a new/fresh pump and drop it in.

[KiwiRS4T]

Tuner (with a 7 second R32) just told another customer with a GTR looking for 400kw to replace his Nismo with a Bosch 044 intank (no surge tank) because " the Nismo drops off at high boost"! (he was at the time giving a second opinion after another tuner told him the same!).

[R31Nismoid]

Define 'high boost' we talking 20psi or 40psi?

Plenty of cars running 400rwkw with a Nismo on 20-22psi with a 2.8-3ltr.

For anyone interested i did digging the other day with some actual flow test data.

http://www.stealth316.com/2-fuelpumpguide.htm

Factory GTR pump flow: 230L/hr @ 72psi (13.5V)

So lets assume a Nismo pump is the same as stock GTR pump (its 25% more apparently, I have reason to think its the same, thats for another discussion)

Bosch Flow Rate PDF (63kb).

Bosch 044: 200L/hr @ 72psi (12V)

So clearly the Bosch if wired up @ 13.5V will flow more, and that overall the Bosch would be the better pump - I'm sure we can all agree on that.

Bosch/Nismo, pretty close. Bosch will flow more @ 72psi, but it's not huge amounts.

[R31Nismoid]

anyway, this is a 300-330rwkw thread, nothing to do with 400

[Beer Baron]

nismoid. that test is a bit off. no way does a nismo pump flow the same as a stock GTR pump..... they flow 276l/ph stock around 200 and bosch 044 around 230.

[R31Nismoid]

No it's not. Nismo pumps, according to their spec sheet - flow 276l/ph @ 3.0kg/cm2 !!!

3.0kg/cm2 = 42psi, pretty much stock rail pressure.

Add more pressure, it totally changes the game. No one runs 42psi fuel pressure on a boosted application.

If you look at the testing - its at 72psi not 42psi. The flow rate is nowhere near 276l/ph once you add 20psi.

The Bosch is also tested @ 72psi, so it's comparing on a even playing field. Not Nismo's pointless specification.

[Rolls]

whoops

Edited July 24, 2011 by Rolls

[Beer Baron]

nismoid, they are tested at 3bar as all modern EFI systems are a 3 bar system. ie base pressure of 3bar (2.5bar with engine running). that is factory pressure. I don't run increased pressure on my cars. why on earth would you? 72psi base pressure is nuts. I run standard 3bar base ( which = 36psi at idle). add say 20psi boost and I still only get to 60psi or so at max boost. most pumps are quoted/rated at 3bar. it's an industry standard. the other question is voltage. vary voltage up and down and figures go all over the place. same with pressure. if anything the nismo rating is conservative compared to other pump ratings and in my experience they will outflow an 044 by miles. and they most certainly do not flow the same as a stock GTR pump.....

[R31Nismoid]

Not really sure what you are getting at in the above. The statement made, Nismo drops off @ high boost, was quite simple.

Hence the use of 72psi, equal to around 30psi boost give/take.

Talking about 3bar/EFI standards is nice, but effectively pointless in this discussion.

There is no actual flow data anywhere around for a Nismo pump @ anything other than base rail pressure, which is utterly useless. Standard or no standard it offers nothing to help confirm/deny.

Until someone actually has Nismo flow data, it's just speculation. You cannot say for certain that @ 60-70psi the flow is still 25% more (what Nismo quote @ base). It could indeed drop off making the comment valid.

All my post did was seek to give an idea of the comments validity.

[vspecIInur]

Soon I will have the following parts added to my NUR:

(Mind you already has cam gears, HKS actuators, full exhaust and obviously the N1's.)

Nismo fuel pump

Nismo fuel reg

Power fc D-jetro

Blitz sus power pods (already have full greddy piping kit)

HKS evc-s bc

Sard 800c injectors

Nismo twin copper mix

Hope to run 20-22psi as well. We shall see what power it makes.

Only question that remains is should I get set of split fire coils or HKS twin power DLI II?

Work is going to be done at racepace

[Piggaz]

Soon I will have the following parts added to my NUR:

(Mind you already has cam gears, HKS actuators, full exhaust and obviously the N1's.)

Nismo fuel pump

Nismo fuel reg

Power fc D-jetro

Blitz sus power pods (already have full greddy piping kit)

HKS evc-s bc

Sard 800c injectors

Nismo twin copper mix

Hope to run 20-22psi as well. We shall see what power it makes.

Only question that remains is should I get set of split fire coils or HKS twin power DLI II?

Work is going to be done at racepace

Ring Chris and ask him what he wants/likes seeing that Racepace is doing the work.

[R31Nismoid]

DLI isn't needed.

Coil packs, hard to say. It's sorta s wait and see, might be fine.

I'm still running stock packs.