I know that the turbo and NA high pressure (external) fuel pumps are different but can you put a turbo fuel pump on a NA without any problems?? Cheers!!

This exact Q was raised on performanceforums The answer is yes. R U sure the turbo and na pumps r different? I don't think they are, i have a genuine holden service manual on the turbo engine (vol. 6) It doesn't mention anything bout a diff fuel pump, everything thats diff on a turbo vl is fully detailed! Plus there's no reason for it to be diff if U understand fuel systems. Cheers.

dont they have different part numbers though??

They are manufactured by "Bosch" and carry the following part numbers: Normally aspirated (Non turbo): 0580 464 050 manufactured in Germany Turbo: 0580 464 033 this unit is manufactured in France.

ok different part numbers, because maybe they were made in differnet factories/times. What the real question is, are they different at all, and is there proof? ive got the vol 6 holden manual, and i cant find anything on the fuel pump. Can anyone confirm with tests, real details etc, not just speculation? Also if i was to put a higher pressure fuel pump than the standard, would that improve performance at all, or be of any benefit, if just running a standard fuel system. Im thinking not really, but if the pump goes, why not upgrade it while your at it.

same ****; different packaging

I've seen a Vl turbo fuel pump with the number being 0 580 464 070 BOSCH or is that somthing different??

carcrazy is right about the part number for the turbo one cause i have one sitting in cupboard and i just checked it, as for the n/a one i havent got the guts to go outside and lie on the cold concrete to check it. But if the turbo fuel pump does pump more fuel i could only see it being benifical (spelling) cause it would be pushing more fuel through the injectors, probably not much more but alittle bit more. But then again doesnt the fuel pressure regulator govern this anyway? This will probably pose the question is the N/A fuel pressure regulator any different to the Turbo one? As far as i know they are the same except for mountings for the 2 different intake manifolds. Please feel free to correct me in anyway.

hey guys.. well to confirm the difference between an na fuel pump and a turbo fuel pump i had a look at a spare fuel pump in my bedroom that came off a 5spd na vl.. part # : 0 580 464 008 it's a BOSCH unit, made in germany.. hope that helps.. also while i'm here.. not knowing much about fuel systems and fuel pums.. could it be beneficial to run 2 fuel pups in line with eachother.. or would they restrict eachothers output of fuel for no benefit ?

both regualtors supply same pressure so if you add a extra pump or run a bigger pump the rail only gets same pressure. u need a bigger or muliple pumps when the injectors are using so much fuel the standard pump cannot supply enough fuel to it. then u can also look at alteranitive like adjustable rising rate regualtors. so adding a extra or bigger pump to a stock car will have no affect what so ever apart from putting more strain on your regualtor and breaking it

VLT87 Also remember that you can have the same pressure however different flow (volume). For eg 2 cars are identical except that one has a bigger turbo than the other. Both on 15psi boost, the one with the larger turbo makes more power (say 15rwkw more for instance). This is b/c the larger turbo (read fuel pump) supplies more volume of air (read fuel) at the same boost pressure (read rail pressure) than the smaller turbo and so more power can be realised. So fitting a larger flowing fuel pump to a modded VLt (as i did to mine) did have a very slight 'flow' advantage even though the fuel rail pressure was the same as when I had the standard fuel pump (the mixtures were a little richer on the dyno). However as you mentioned this should ideally be complemented with an adj fuel reg to get the most benefit. PS the standard fuel pressure reg are very strong and will not break running bigger fuel pumps as most of JPC's 10 second packages retain the standard regulator.....as Mark said to me why change it when it does the job extremely well Back to the toipic at hand. This has been discussed so many times and all there has been is a lot of speculation. So until someone gets both pumps, flow tests them and publishes the results then i rather not comment. Some original photos have not been recovered yet.

mine broke from using the big bosch motorsports pumps so i now run a malpassi regualtor they will flow more at the pump but unless you upgrade your fuel lines then the flow will be the same as it runs through the same diameter fuel lines. like running a 700hp turbo and having small pipes get boost pressure and heaps of low at turbo but cannot flow via pipework into motor. one of the reasons the plenum on a lot of vls is modified and same priciple of porting a head

I'm aiming for 400fwhp, so if I run 2 x stock fuel pumps in parallel, will this give me enough fuel pressure and will the 2 pumps flow enough to keep the pressure up when required? Or will I need to go for an aftermarket fuel pump/s?

VLT87 I was addressing your point regarding fuel pressure and saying that fuel flow(volume) is not determined solely by fuel pressure (as you suggested putting on a bigger pump will not increase flow) and made the analogy with air flow (air volume/cfm) v's psi at the intake. One can run the same psi as another car but have a different air volume (due to bigger turbo) being ingested into the engine and will therefore produce more power. Now you're referring to pipe diameter. You'd be amazed how much more flow can be passed through a given pipe diameter. For eg many people still believe that 3" intercooler pipes are required to produce good power yet there are cars producing good power and running good times on 2.25" intercooler pipes. JETWPN VLt (Shaun) is one (11.9 sec manual) and Bluey1 cop VLt is another 10.9 auto...... No offence dude just stating what I know Some original photos have not been recovered yet.

I've heard that it is unwise to use a turbo fuel pump on a NA because the turbo pump is a higher pressure pump to the NA which puts more pressure on the regulator thus stuffing up.... Cheers

im pretty sure they have the same regulators. someone here will know for sure. Well ill still be using the N/A one when i do my conversion.

If they are the same why are there two different p/ns, i think if you put an n/a pump or regulator on your turbo and melt a piston because it runs to lean then you have only yourself to blame.

when i do my conversion ill be using the turbo fuel pump, but until someone can tell me the difference between the fuel pressure regulators besides mounting brackets(which might be the reason for different part numbers) ill be using my n/a one.

this is an age old debate: when I rang bosch they told me that originally the pumps were different and had different part numbers, apparently now they only make the one type that is compatible with both but they kept the part numbering system.

Then why does the NS and turbo regulators have different part numbers?? NA - 2267042L00 Turbo - 2267056S00