Fuel Pumps...what is everyone running?

[tmorgan4]

First off, I'm not going to be running any forced induction. Just a somewhat stock NA engine. I read on another forum that the factory pump for my VG33 won't flow enough fuel for the VH45.

Those of you who have VH swaps that are already running, what are you running for fuel pumps? I read that the Walbro 255lph pump is a popular swap for 300zx guys.

What does everyone else say? Is it even necessary to put in an aftermarket pump if I'm just running the stock engine? I'd hate to run it lean and blow up the brand new engine.

[gs14racer]

Im running a walbro 255 also. Its pretty cheap and its always best to have to much fuel than not enough.

[SSDwellah]

I will also be running a walbro 255. My swap is going into a Z32 N/A so this is an upgrade for me, although I have heard that the TT pump is ultimately a more capable pump. Since I am not going to be in the 600WHP range anytime soon, I went with the cheaper one which is still brand new and doesn't require the funky two stage wiring of the TT unit.

I have heard that the Q45 uses the same pump as the Z32 TT, but I have not confirmed it. In any event, the cost of a new walbro pump being at most 1/3 of a new TT pump, I went with the walbro since this swap is getting more expensive than I anticipated.

[Q45tech]

The 300zx TT and Q45 are the same pump......Walboro is a low cost low quality version that flows the same 255 lph except above 43.4 psi were The Nissan shines.

[SSDwellah]

The 300zx TT and Q45 are the same pump......Walboro is a low cost low quality version that flows the same 255 lph except above 43.4 psi were The Nissan shines.

First of all, please don't take this the wrong way because it's not intended to be mean-spirited, just a clarification. Secondly, It's walbro not walboro.

I'll stop numbering now I would have to disagree about the quality, I had one in my turbo KA 240SX for over four years and it never gave me a problem. In fact, it seems that it was overwhelming the stock FPR so I switched to a Nismo adjustable unit. Granted maybe an OEM fuel pump lasts 7-8 years or more and I haven't had the 240 long enough to attest for the pumps durability, but considering its halfway there for a third of the price of the TT unit, I am satisfied. Not only that, but there is not the typical whine of some fuel pump units.

As far as pessure above 43.4PSI (wow what a particular figure), with these engines in NA form, I would doubt that upping the pressure does much in the way of power gains. In fact if your FPR is doing it's job, it really dhoulfn't get higher than that.

Here is an informative link about various fuel pumps. Note that this is as a applied to a Mitsubishi 3000GT so take it with a grain of salt (j/k mitsu and dsm fans ). Anyway, in their testing, the walbro unit did pretty well, and the Nissan 300ZX unit flowed only about 241 Lph. I guess the skyline ones have been tested to flow just a bit more. Well, you can read more about it in the article, I don't want to misquote/mischaracterize anything here

http://www.stealth316.com/2-fuelpumpguide.htm#j2

[Mettler]

Heh, Walbro 255 intank pump here too.

From what I've read here and elsewhere, seems they're a pretty cost effective fuel pump.

My engine ran mint with it, and suffered from no fuel problems.

[T45]

The pathy pump should be the same as the Q and TT Z with different flow rates. You should be able to just swap the pump into the pathy unit. Check out the vid on MWS 2nd down from the top and it'll show you what I mean.

http://www.mwsmotorsports.com/mwstv.htm

[CrazyTrance]

I'm also going to be running a walbro 255

[tmorgan4]

And it looks like the winner here is the Walbro 255! Thanks everyone.

[T45]

This is where it pays off to get an entire Q45 donor becuase you have all of the needed parts for a swap. Not that you can't do it without the whole car, but it makes it cheaper unless you are going to go super high performance. Then you probably won't be using the fuel pump, ECU or a number of other factory components.

[Q45tech]

43.4 psi is = to 3.0 bar the standard from 85 - 2001 on Nissan and most other vehicles. The standard at which injector flow are measured.

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

Yes I like for fuel pumps to last 160k or 8 years.