Jump to content
SAU Community

Recommended Posts

I never ran the single Walbro (I modified the pump housing to fit a Tomei gtr pump) because I listened to the heresay in the forced induction section. I have since changed my tune with regards to them. For all but the highest pressure setups Walbro's work and fit perfectly. Any more flow will require a complete fuel system upgrade.

Save your cash and time and fit what works, but you will still need to rewire the power to the pump with a relay.

I think Cam was hoping to save a buck and run the factory pump. Of course if it cant supply the fuel he needs there will be another tune on the cards which will negate any savings.

I don't think we did this on mine. Seems to be running ok? Am I going to hit fuel cut down the track?

I think Cam was hoping to save a buck and run the factory pump. Of course if it cant supply the fuel he needs there will be another tune on the cards which will negate any savings.

Actually no, I wanted to see what we could get out of a plug and play ECU with stock fuelling.

I'm thinking slightly differently and thinking I should do injectors and fuel pump before the tune.

Is the pump body in the M35 the same as the V35/G35/350Z?

The filter is the same....the body ain't....we have a return system.

Not a bad idea to do injectors and fuel pump first....IMO there is no way you will max out the standard fuel system with the stock turbo/boost even with dump exhaust and SP ect!

Edited by Jetwreck

The filter is the same....the body ain't....we have a return system.

Not a bad idea to do injectors and fuel pump first....IMO there is no way you will max out the standard fuel system with the stock turbo/boost even with dump exhaust and SP ect!

Probably, but my plan is to get the supporting mods in place then do the turbo. But if it can be tuned to stop maxing out the injectors at least i know i dont have to hurry.

Is our pump body the same as anything?

Just curious. Thanks for the info.

Where did you get your injectors from Scotty? Much difficulty making them fit? (I gather the Xspurt's aren't drop in, where as the Deschworks are).

I havent tried them, only the newer Bosch/ID/Xspurts are going to give you the smooth idle though. Be wary of other large injectors. I think I can get the Xspurts for around $100 each from the wholesaler, Injectors online.

I havent tried them, only the newer Bosch/ID/Xspurts are going to give you the smooth idle though. Be wary of other large injectors. I think I can get the Xspurts for around $100 each from the wholesaler, Injectors online.

Any reason you went from ID's to Xspurts?

They are the same thing, all based off bosch bodys and flow matched apparently. Mine idles better now than with the 610's in the rail. They drop in if you remove the spacers but you will have to wire/crimp the new plugs in.

Ryan, looking at this pump the sock pickup is the same as Walbro, as is the power plug. Perhaps this deatschwerks IS going to fit ok... Buy it and try?

http://www.skylinesaustralia.com/forums/topic/379042-deatschwerks-300lph-fuel-pump/

Another (interim) option is to replace the stock pressure reg with an adjustable one. I bought one for $60 & put it in today. The OEM pump is now supplying more fuel courtesy of higher pressures & I had to back the AFR's off a fair bit across the mid range. And at the top end they look pretty good now instead of a bit lean.

I haven't had enough time to tune it properly, but looking very promising so far.

Ryan, looking at this pump the sock pickup is the same as Walbro, as is the power plug. Perhaps this deatschwerks IS going to fit ok... Buy it and try?

http://www.skylinesaustralia.com/forums/topic/379042-deatschwerks-300lph-fuel-pump/

Cheers Scotty. Thats what I was thinking, it looks the same as the Walbro, so does the Aeromotive, hence the question. Might organise that shortly.

Are the $60 ebay FPRs any good or do you need to spend the couple of hundred to get a Sard etc?

Be careful running much higher than stock pressure, the pump flows less and will only supply a dribble at over 80psi. What boost are you running?

Stock boost atm. Static pressure is about 52psi, but it's a rising rate FPR so should increase to about 65psi at my current boost level. I won't up the boost to more than about 16psi anyway, so this setup with stock pump & injectors could do me until I need a new turbo (providing AFR's are able to adjusted to cope with the extra 3 psi when the time comes).

Edited by Commsman

Are the $60 ebay FPRs any good or do you need to spend the couple of hundred to get a Sard etc?

Sard would be better I think, but I didn't really know if this would work out as good as it did, so I didn't want an expensive item sitting in the shed unused. Having said that, I was impressed with the feel of mine, very solidly cut from billet aluminium. The hose clamps were crap tho...

You don't always need to buy name brands to achieve a good result.... and sometimes you do. It's just knowing when :happy:

.

Edited by Commsman

There's a heap of fake sard regs around so be careful. I'm using an SX reg and it's been fine.

Rising rate regs usually increase the fuel pressure double the boost so you could be up there, do you have a gauge in the dash?

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

    • Update 3: Hi all It's been a while. Quite a lot of things happened in the meantime, among other things the car is (almost) back together and ready to be started again. Things that I fixed or changed: Full turbo removal, fitting back the OEM turbo oil hardlines. Had to do quite a bit of research and parts shopping to get every last piece that I need and make it work with the GT2860 turbos, but it does work and is not hard to do. Proves that the previous owner(s) just did not want to. While I was there I set the preload for the wastegates to 0,9bar to hopefully make it easier for the tuner to hit the 370hp I need for the legal inspections that will follow later on. Boost can always go up if necessary. Fitted a AN10 line from the catch can to the intake hose to make the catchcan and hopefully the cam covers a slight vacuum to have less restrictive oil returns from the head and not have mud build up as harshly in the lines and catch can. Removed the entire front interior just shy of the dashboard itself to clean up some of the absolutely horrendous wiring, (hopefully) fix the bumpy tacho and put in LED bulbs while I was there. Also put in bulbs where there was none before, like the airbag one. I also used that chance to remove the LED rpm gauge on the steering column, which was also wired in absolute horror show fashion. Moved the 4in1 Prosport gauge from sitting in front of the OEM oil pressure gauge to the center console vents, I used a 3D printed vent piece to hold that gauge there. The HKB steering wheel boss was likely on incorrectly as I sometimes noticed the indicator reset being uneven for left vs. right. In the meantime also installed an airbag delete resistor, as one should. Installed Cube Speed premium short shifter. Feels pretty nice, hope it'll work great too when I actually get to drive. Also put on a fancy Dragon Ball shift knob, cause why not. My buddy was kind enough to weld the rust hole in the back, it was basically rusted through in the lowermost corner of the passenger side trunk area where the wheel arch, trunk panel and rear quarter all meet. Obviously there is still a lot of crustiness in various areas but as long as it's not rusted out I'll just treat and isolate the corrosion and pretend it's not there. Also had to put down a new ground wire for the rear subframe as the original one was BARELY there. Probably a bit controversial depending on who you ask about this... but I ended up just covering the crack in the side of the engine block, the one above the oil feed, with JB Weld. I used a generous amount and roughed up the whole area with a Dremel before, so I hope this will hold the coolant where it should be for the foreseeable future. Did a cam cover gasket job as the half moons were a bit leaky, and there too one could see the people who worked on this car before me were absolute tools. The same half moons were probably used like 3 times without even cleaning the old RTV off. Dremeled out the inside of the flange where the turbine housing mates onto the exhaust manifolds so the diameter matches, as the OEM exhaust manifolds are even narrower than the turbine housings as we all know. Even if this doesn't do much, I had them out anyways, so can't harm. Ideally one would port-match both the turbo and the manifold to the gasket size but I really didn't feel up to disassembling the turbine housings. Wrapped turbo outlet dumps in heat wrap band. Will do the frontpipe again as well as now the oil leak which promted me to tear apart half the engine in the first place is hopefully fixed. Fitted an ATI super damper to get rid of the worn old harmonic balancer. Surely one of the easiest and most worth to do mods. But torquing that ARP bolt to spec was a bitch without being able to lock the flywheel. Did some minor adjustments in the ECU tables to change some things I didn't like, like the launch control that was ALWAYS active. Treated rusty spots and surface corrosion on places I could get to and on many spots under the car, not pretty or ideal but good enough for now. Removed the N1 rear spats and the carbon surrounding for the tailpipe to put them back on with new adhesive as the old one was lifting in many spots, not pretty. Took out the passenger rear lamp housing... what do you know. Amateur work screwed me again here as they were glued in hard and removing it took a lot of force, so I broke one of the housing bolts off. And when removing the adhesive from the chassis the paint came right off too. Thankfully all the damaged area won't be visible later, but whoever did the very limited bodywork on this car needs to have their limbs chopped off piece by piece.   Quite a list if I do say so myself, but a lot of time was spent just discovering new shit that is wrong with the car and finding a solution or parts to fix it. My last problem that I now have the headache of dealing with is that the exhaust studs on the turbo outlets are M10x1.25 threaded, but the previous owner already put on regular M10 nuts so the threads are... weird. I only found this out the hard way. So now I will just try if I can in any way fit the front pipe regardless, if not I'll have to redo the studs with the turbos installed. Lesson learned for the future: Redo ALL studs you put your hands on, especially if they are old and the previous owners were inept maniacs. Thanks for reading if you did, will update when the engine runs again. Hope nothing breaks or leaks and I can do a test drive.
    • No those pads are DBA too  but they have colors too. I look at the and imo the green "street" are the best.
    • I’m not sure what happened I told them about sonic tunes free OTS tune and the next the I know .. I was booted..   To funny 
    • Yea - I mean I've seen my fuel pump which is decades old and uh, while I'm not saying this with real knowledge... but I sure get the ick at using anything in the fuel system that produced the state of that pump. Many years ago I went through multiple pumps (and strainers) before I dropped the tank to clean it out with extreme violence. I'm talking the car would do maybe 50km before coming to a halt, which resulted in me cleaning out the filter with some brake cleaner and going on my way. None of my stuff ever looked like what came out of your fuel tank. I don't think I'd be happy with it unless every single component was replaced (or at least checked/cleaned/confirmed to be clean here).
    • I'm not going to recommend an EBC pad. I don't like them. Just about anything else would suit me better. I've been using Intima pads for a while now.
×
×
  • Create New...