Jump to content
SAU Community

Recommended Posts

I'm really enjoying driving around in this and especially the near dead silence within the cabin, all except for the exhaust of course which I don't mind.

Any know the flow rate of the OEM fuel pump and it's awkw capacity ?

Really don't want any pump whine if I can do without it.

cheers

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/
Share on other sites

Iv had the dw300 deatschwerks pump in tank and a walbro 255 in tank, The walbro is just a little louder the DW. The DW only lasted 2.5ish years

Isn't it spelt doucheworks? Sorry, I couldn't help myself.

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/#findComment-7632286
Share on other sites

I'm running a RACEWORKS 340LPH E85 Safe pump in the std housing. Small amount of filing to the bottom cradle cap clip holes to lengthen the assembly. OEM wiring with 20A fuse.

*needed direct 12v to initially purge the pump

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/#findComment-7632353
Share on other sites

So they fit in Matt? I saw they were longer and would require cutting compared to the Walbro.

Did you run a direct power feed? I doubt the Raceworks/Proflow/Chinese e85 pumps will like the low voltage on idle/cruise for long.

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/#findComment-7632388
Share on other sites

No they don't fit easily but are do-able.

What I think is a small amount of mods would not be as easy for the average enthusiast, I'm sure you would have no issue's scotty.

They are definitely longer which is why the bottom assembly cap required modifying to enable the assembly to clip together with the pump installed. The original pump rubber bottom cap doesn't fit, I used some less density rubber provided with the pump which takes up less space. The plug is required to be rewired, the bottom keyways and fuel filter captive washer post need shaving. OEM fuel filter is a little loose, now held on by the assembly bottom cap and foam.

It did require a 12v direct feed initially to enable the pump to purge. Haven't had any other issues, flow at idle voltage was ok. I asked about running OEM low voltage prior to purchase and was given a green light as the windings are different in these pumps compared to others...possibly why it is physically longer. I suspect voltage during cranking to be reasonably low anyway...food for thought.

Time will tell if it remains reliable, it's only been in for a couple of weeks.

Comes with a 2 year warranty ;)

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/#findComment-7632471
Share on other sites

  • 3 months later...

Ok, So I've got a Walbro 255 sitting on my shelf still.

Is it still worth installing it if I choose not to tune ?

I'm looking at everyone's dyno results and the peak power it way too late for what I want.

I guess that's part of auto transmission.

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/#findComment-7688892
Share on other sites

Ok, So I've got a Walbro 255 sitting on my shelf still.

Is it still worth installing it if I choose not to tune ?

I'm looking at everyone's dyno results and the peak power it way too late for what I want.

I guess that's part of auto transmission.

Your stock pump is 15 years old, I know I would be changing it... It will require decent wiring, a fuse and relay to install properly, Walbro pumps don't like the low voltage supplied during cruise and idle.

Just remember, peak power in some cases might be almost triple the stock power and 30+psi, most highflows would still outflow a stock turbo by around 3000 revs. Plus when looking at the curve, having the torque converter locked Vs unlocked makes a fair difference. In manual mode it's trying to lock, in drive it is unlocked. All my results are skewed to look laggy, as the converter is locked, where as I drive on the street with the lockup clutch disconnected for better response and gearbox longevity.

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/#findComment-7689257
Share on other sites

Well, other than the MAP sensor boost cut, the rest is based off airflow, so every car will be different. Bump up the boost and see how she runs, shouldn't be too hard to find the sweet spot.

If you are running a highflow, that boost level may be less than stock.

Link to comment
https://www.sau.com.au/forums/topic/460757-m35-fuel-pump/#findComment-7690272
Share on other sites

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

    • sold listed as a Tomei LSD 1.5 Way For 1998+ Nissan Skyline ER34 25GT RB25DE w/Open R200 https://www.ebay.com/itm/174006114594?campid=5338967980&mkevt=1&mkcid=1&toolid=10050&customid=&mkrid=711-53200-19255-0&loc_physical_ms=108689&loc_interest_ms=&campid=5338967980&mkevt=1&mkcid=1&toolid=10050&customid=71883f2ccc571356e0a757bc7adfdde2&mkrid=710-53481-19255-0&loc_physical_ms=108689&loc_interest_ms= it went in like butter all gears, alignment, back lash etc, rotation and clearances correct, and if rolling all rotates smooth and free when coasting down road , clutch in or out over 10 mph smooth... its the binding, clunking and jerking from a stop that is most concerning, also seems like its going to tear the tires off in 10 miles of normal road driving. 
    • What 1.5 way? There's no such thing really as a 1.5 way, just different ways of explaining 2 ways with different ramp rates. HOWEVER. In any driving in a straight line your 1.5 or 2 or 1.7 way should have no clunking at all. With the clutch fully depressed the diff should be silent (unless it's welded but I'm assuming it's not). Something aint right here.
    • Clutch is a spec brand, new clutch system,( PP, flywheel, friction disc, etc. pull type) installed 100 miles ago, with no problems.
    • looking for some help and maybe some insight on others experience with a new LSD. R34 GT ran and drove beautifully, but always alot of grip loss due to the open R200 rear end, so I just installed a new 1.5 LSD way into the stock open R200 for a ER34. Simple. Everything seemed right. I test drove for the first time this weekend. as I started to back out the garage the first time slowly with tires straight it sounded and felt like I had a loose or half disconnected drive shaft...that was clucking around loose and shaking entire vehicle, and making it feel like the trans clutch was spontaneously slipping then grabbing very roughly while just letting out pedal slowly. I backed it out went to pull forward with the same noise, shake and slip grab feeling with hesitation, I turned the tires to back out more and then pulled ahead some same thing but worst because of added wheel resistance (which that I expected) puzzled … pulling it back in checking everything over and finding nothing wrong, I tried it the next day. same thing, couldn’t believe how it shook everything again making a terrible noise and making it feel like the trans clutch was slipping and grabbing, but I got it out of garage into the driveway, got it straight, drove forward and then reveres a few times in a straight line everything shaking , causing what felt like clutch slip and grab every time, sounded like right behind front driver tire and I could feel it in the floor board with my feet,... worst right when beginning to let clutch pedal out to engage slightly, shuttering and sounding terrible along the way…I managed to slowly get down the road, babying it the whole way, once I was rolling (out of 1st) seemed to be better and between shifts, then clutch felt closer to normal…not slip/ grab etc., but back down to any stop, straight road or turning, same thing. Made no difference if all tires were straight or if I was turning. All other gauge read out correct. with in 2 miles as planned I reached the empty parking lot and performed the break in procedure that came with lsd, essentially to drive in a figure 8 a bunch.  Did this, binding chattering, and shaking the car the whole way. I drove it back home seemed somewhat normal once I was in straight line and past 10 mph or so, and I know it will “bind” on corners and cause some tires squeal when turning especially from a stop, but when I begin to move it still causes what feels like the trans clutch to slip and jerk badly as well as shaking the entire car, and sounds terrible, that I didn’t expect. I used the fluid they supplied with LSD kit and did the breaking, planning to change fluid as they suggest after breaking, but wondering will it get smoother or less aggressive with use? maybe a 1.5 is just too aggressive for normal road driving?   I have a LSD that I put in my 71 cuda when I restored it, with amazing smooth , quite yet effective results. Different style LSD but that ones a joy to drive. maybe expecting too much from this R200?
    • Join SAU NSW for a flame-grilled feed & flame-spitting cruise! Sunday 17th August 2025 3:30PM Meeting Archies Flame Grille Sylvania Waters 4:45PM Cruise Departure 5:15PM Arrival at Cape Solander Kurnell Meet Location: Archies Flame Grille Final Destination: Cape Solander Kurnell *Disclaimer* There will be a lead and follow car so no one should get lost. If you would like to attend or bring others along please put your name down and a +1 as numbers will be needed prior! This is NOT a race and we will all be adhering to all road rules. If this is what you want please come to one of our many track days. This is an official SAU:NSW event and will be run under a CAMS permit. One of the things that really sets our club apart is our commitment to being true enthusiasts. When on normal roads we strive to maintain good relations with the authorities as well as the public in general. When attending one of Skylines Australia NSW events please try to: • Be aware of surrounding environment and act accordingly. • Drive courteously on the state’s roads as a true enthusiast should. • Understand how important it is to maintain the good name of SAU NSW and thus, treat others accordingly. • Any misbehavior will not be tolerated and you will be asked to leave.
×
×
  • Create New...