Jump to content
SAU Community

Recommended Posts

So as I'm doing a bunch of work on the car, I thought I'd make sure it was e85 ready if I want to go that way in the future.

I currently have a teeny low pressure/high flow pump in the standard holder in the tank (nice and low) and a good old bosch 044 under a surge tank that sits under the rear sear outside the car. It's a great setup but AFAIK neither pump will survive if I run e85 through it.

What are people using for e85 safe lift pumps, and are there any external pumps similar in size to an 044 (so I don't have to stuff around with the setup too much)? I bought the big e85 walbro but it doesn't suit external use and is crazy big to use as the lift pump (who wants to warm and circulate that much fuel.....

Car only makes 310kw at high boost on e85 so it doesn't need 400kw+ pumps.

Link to comment
https://www.sau.com.au/forums/topic/460575-e85-lift-and-external-pumps/
Share on other sites

A walbro 460 will fit with another Nissan cradle intank. (I have one in the 33, not sure what/if there is a difference in the 32 with the different fuel tank setup).

Have a look at the Holley dominator 1800 for an external.

A bit more work, it will work and is quiet.

Talk to Unigroup about the specific cradle to use

Walbro 255LPH 500HP External Fuel Pump GLS392 is ethanol rated

http://www.trademe.co.nz/motors/car-parts-accessories/performance/fuel-systems/auction-967861260.htm

According to NZEFI the Walbro in your tank (GSS341 and GSS342) is ethanol compatible ( I have run E10 though mine with no ill effects)

Check with Scotty - he will know and also has pumps at a good price.

Walbro 255LPH 500HP External Fuel Pump GLS392 is ethanol rated

http://www.trademe.co.nz/motors/car-parts-accessories/performance/fuel-systems/auction-967861260.htm

According to NZEFI the Walbro in your tank (GSS341 and GSS342) is ethanol compatible ( I have run E10 though mine with no ill effects)

Check with Scotty - he will know and also has pumps at a good price.

My 255 twins are still going strong 6 years on in the Stagea, I guess I have proven they are long term safe. :P

I am using a peirberg in tank lift pump (part number 721.088.62) direct fit into cradle, e85/methanol safe, into a surge and a 044.

044 will be fine with e85.

Edited by R31 drift pig
  • Like 1

Flow rating of peirberg? (I know I'm lazy [emoji14])

200 LPH at free flow, 130 @ 3.5 psi. About half what a single 044 does at full noise - mine will be 280 lph @ 65-70 psi.

Edited by R31 drift pig

A walbro 460 will fit with another Nissan cradle intank. (I have one in the 33, not sure what/if there is a difference in the 32 with the different fuel tank setup).

Have a look at the Holley dominator 1800 for an external.

A bit more work, it will work and is quiet.

Talk to Unigroup about the specific cradle to use

The 32 is different to the 33-34 setup, but that is the system I will be using once I purchase the 1800 dominator pump to replace my loud az fark Weldon pump, as I already have a Walbro 460 intank as a lift pump, was looking at Fuelab but have heard a few horror stories about them lately

Duncan, given it is the engine that primarily heats the fuel having a high flow intank lift pump circulating cool tank fuel through the surge tank can't be a bad thing, if the intank out flows the main pump then the engine return line can be plumbed back to the main tank so the surge tank is always full of the coolest fuel possible

  • 7 months later...

Hi, I have a nismo internal pump and a Bosch 044 external pump from a surge tank. I installed it after having fuel surge issues and it fixed them. I run e85 and am concerned about the longevity of the Bosch 044 pump.

I was wondering if it was possible to use the walbro e85 intank pump as an external pump as a replacement for the Bosch 044?

Edited by boxheadmr

Hi, I have a nismo internal pump and a Bosch 044 external pump from a surge tank. I installed it after having fuel surge issues and it fixed them. I run e85 and am concerned about the longevity of the Bosch 044 pump.

I was wondering if it was possible to use the walbro e85 intank pump as an external pump as a replacement for the Bosch 044?

I run the exact same setup on e85 in my track car for past 5 years and both pumps the nismo and 044 are still alive and have never had a issue with them yet.

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

    • GCG is a good company, they're a major distributor for Garrett in Japan as well.
    • Nah, OEM washer bottle and brake fluid reservoirs are fine I don't know what it is with the plastic that Mazda used, some plastics, like the washer bottle and brake fluid res are fine, and still look new after 20 years use, where as the coolant expansion tank, and PS reservoir, that I replaced with new OEM items when I first got the car, turned yellow and started getting brittle a few years later If the dirty yellow stained plastics didn't trigger me there wouldn't be an issue, but they did, much like the battery bracket....... Meh As for going back to work full time to support car stuff, nope, why, because I own a Mazda NC MX5, not a Nissan R series Skyline 🤣
    • I've never heard of CJ-motor, so can't advise you on them. I'd just go straight to GCG for a GCG highflow though. Seems no point to use a middleman. I'm somewhat surprised that the price on the CJ site is lower than the GCG retail price. Even though CJ would get a discount of some sort, you would hardly expect them to give up so much margin. Maybe the price is out of date? Having said that "I'd go to GCG"...when I did my highflow, I went to Hypergear. I did this https://hypergearturbos.com/product/rb25dethighflow/#tab-dyno-results with the R34 OP6 450HP profile. With the BB centre (extra $400) and intially with the standard boost actuator, but I eventually got him to send me the high pressure one when I got to the point of being able to actually use it. Ends up costing the same sort of money as the GCG highflow, but this is, of course, the turbo that I KNOW has a shorter length core and so moves the comp cover rearwards. The GCG apparently doesn't do that. My mechanic also swears by the GCG highflow, given that we have another turbo rebuilder who does something essentialy the same as theirs, using Garrett wheels. He says it stands up at really low revs and makes good power. I haven't pushed my HG highflow past ~240-250rwkW yet (should have a little more in it, but unclear how much) and it does have a fairly gentle boost ramp. OK, it's much better now that I have gotten my boost controller tuned up on it.  A lot of my earlier unhappiness was because I couldn't keep the wastegate flap as closed as it needed to be (including some mechanical issues). I'd still prefer it to boost up nearly as quickly as the stocker, and it certainly a bit slower than that. So maybe the GCG one is worth the first look (for you).
    • Ok thanks 🙂 I will higly consider this. Any "known" company for a good reviews and experience to send that off? Is that CJ-motor good one? Or go straight to GCG site? I need to use VPN to even find some of those "shops" let alone access them 🙂 
    • You can literally put in as much WMI as it takes to quench the combustion totally (and then back it off a little, obviously), and it will keep making more and more power. The power comes from the cooling effect of the water (and the meth) and the extra fuel (the meth, which also has massive octane). It is effectively exactly like running E85. One might be slightly better than the other, but they are damn close. But with either you can lean on the boost or the timing (or both) waaaay more than with just petrol and the results are similar. Here's the first thing I googled for an anecdotal bit of evidence. Can't access the attachment without being a gold member, but it is there for the getting if able to, or searched up elsewise perhaps. https://www.hpacademy.com/forum/general-tuning-discussion/show/wmi-vs-e85/
×
×
  • Create New...