Jump to content
SAU Community

Recommended Posts

Hey guys

Ive had several intank pump failures and its driving me up the wall, not to mention unhealthy for my motor, my RB30det has been through several big lean outs now....

pump 1 was a Walbro gs255 set up on the cradle in an s14 tank and died after 11 months, it seized and drew too much current and blew fuses, took this out and replaced with pump 2

pump 2 was a areomotive stealth e85 pump which lasted 3 days, pump stopped pumping all of a sudden, no blown fuses, car was getting thrashed and started starving, took pump out and on the body of the pump there are two melted sections from something failed internally.

stumped!

Im after a pump thats effective for a lift pump in an e85 situation... help me out here

Link to comment
https://www.sau.com.au/forums/topic/448245-intank-pump-failures/
Share on other sites

It probably goes without saying, but these new e85 pumps draw a lot of current and thus require a dedicated power and earth from the battery. The standard wiring doesn't cut it.

This is a good read; http://radiumauto.com/media/techarticle-page.php?Radium-s-Ultimate-Fuel-Pump-Test-87

I linked that in the new fuel pump thread, which is also a worthwhile read. http://www.sau.com.au/forums/topic/446806-the-fuel-pump-thread/

Pumps do draw much more current when they seize, I had a new Walbro draw over 25 amps when seized, caused by testing it with water then sticking it on the shelf for a few months.

As for why, it doesn't take much in the way of crud to jam a pump, most run an oil pump style gear which has tight tolerance, and the shaft will flog out quickly if there is any cavitation (as they only have bush bearings.)

You should cut them open and see what jammed or failed. Were the socks clean and clear? Did you use the supplied sock filters or the OEM one?

There is only one pump I would fit back in there, an e85 Walbro, as they are a turbine design and less likely to fail.

I've had a Walbro GSS 341 in my tank for about 5 years. It was my only pump but when I upgraded the turbo I directly wired the pump. When I fitted the RB30 I also fitted a surge tank and exterior pump but kept the Walbro as a lift pump and its still fine. No E85 though EFI sell them as being ethanol compatible. A quick Google lists quite a few users on E85 with their old Walbros for many years.

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

    • Oh bugger ! Your right ! Good old hydrogen sulfide. Takes me back to the good old school days ! 
    • I've owned a few scooters over the years, a Vespa PX oil burner was my first scooter, followed by a few others, including a little 50cc BeeWee that I used as a barracks bike, and I've had a blast on all of them, they really are the cheapest for of city/suburb transport around The only issue with scooters in Australia is lots of people look down on them due to their size,  maybe they need a big bike to make up for something else where they are lacking, unlike Europe and Asia where every man an their dog owns one, and now that filtering is legal in NSW, local traffic is never a issue Not to say I haven't owned my share of big cc bikes over the years, but they were for more blasting through the hills or Hwy riding where it needed to sit on Hwy speeds Safety wise, I ride like everyone is always trying to kill me, everyone is running a red, or running stop/give way signs, or generally asleep at the wheel, which most people are duringtheir commute, I also ride really safe, and give myself, and everyone else enough room in case I need to pull some hasty evasive actions, I've done a few rider training days over the years, which has come in handy on more than a few occasions  As for mods, there's nothing really, and yes your right about aftermarket exhaust, all you get is loud and obnoxious noises from them, like every 250-300 cc you hear with a aftermarket muffler, in saying this I did put a rear muffler from a 125 Aprilla on one of my old 125 scooters, it was horrendous and no amount of full face helmet and ear plugs would dampen that noise As for coming from the Harley, and what a overpriced POS that was, I no longer do big rides as my poor old busted joints ache after about 1/2 an hour of riding, long cruises are so much more enjoyable now in a car, so a big bike would be pointless   
    • Oh wow, it's easy to forget how cheap these can be. Probably the cheapest way to travel. Though people in cars here tend to be morons and I would not feel very safe. Were scooters ever big in Australia? It used to be the thing growing up in Europe ~20 years ago. 50/70/125ccm Peugeot or Yamaha and some others. Utterly obnoxious Polini race exhausts. Kick stands that slant as much as possible. So loud. So much noise for really not moving very fast at all. But it felt cool at the time. Not sure where I'm going with this, but there is an aftermarket for mopeds! Though I'd have pictured you more for a Goldwing kind of guy after growing out of the Harley.
    • You need to know I am sorry for this.  
    • As the MX5 isn't apparently "manly" enough, and I need something for runs to the local shops, and also take to my part time job at the salon, basically I can keep the MX5 away from car parks and stuff......like "flying lockers", I was wondering what I could buy to fix this issue LOL, I pick up a new Yamaha 125 Delight this arvo from Trooper Lu, basically a R1 that you can fit a slab of beer on between your feet, also, it was $29400 cheaper than a R1, so actually it's 2 x better than a R1    
×
×
  • Create New...