Jump to content
SAU Community

Underground Motorsports: Project 800hp Rb26dett 1998 Silvia

underground
 Share

Recommended Posts

underground Collaborator

underground

Posted
  • Author
Posted

We now have everything finished with the motor minus the installation of the new 24x12x4 intercooler that arrived today.

I want to thanks Matchless Performance (Addison, TX) for the fabrication of the downpipe, which came out better than I would have ever imagined. The welds are amazing, and extremely clean.

Here are the latest images:

RB26Buildup126.jpg

RB26Buildup124.jpg

RB26Buildup125.jpg

underground Collaborator

underground

Posted
  • Author
Posted

While I still have the interior to finish off, here are the completed exterior shots.

This 240SX has been four years in the making, with 30 corporate sponsors on the stage II build.

I want to give a special thanks to Andy Vaughn @ Southern Imports, and Chris Hamilton (tuner) for their work on the vehicle.

DSC01174.jpg

DSC01177.jpg

DSC01188.jpg

DSC01193.jpg

DSC01194.jpg

DSC01202.jpg

DSC01205.jpg

DSC01207.jpg

Rezz Grand Master

Rezz

Posted
Posted

You painted the carbon! Well done, like I've said many times already, it just looks amazing, should drive amazingly well, and should attract an amazing amount of attention. Whats next???

underground Collaborator

underground

Posted
  • Author
Posted
You painted the carbon! Well done, like I've said many times already, it just looks amazing, should drive amazingly well, and should attract an amazing amount of attention. Whats next???

Interior, as the interior is bone stock right now.

underground Collaborator

underground

Posted
  • Author
Posted
crazy.... absolutely insane power... drool....

Need I ask what the quater-mile time of this beast is??

I'm shooting for 9 sec 1/4 time slips.

Spunky Munky Grand Master

Spunky Munky

Posted
Posted
I'm shooting for 9 sec 1/4 time slips.

Insane.... absolutely beast-like ... my car is running low 14's and I'm over the moon - but yeah, with the amount of mods and engine work, I would expect nothing less - do you think you reach the magical 8's mark??

  • 2 months later...
underground Collaborator

underground

Posted
  • Author
Posted

Sorry about the delay on posting up dyno numbers, but I have crazy busy and the car has sat for the past few weeks.

I have not added C16 yet, but I did tune the car for E85 Pump Gas. Right now, E85 (106 Octane) is $2.18/gallon at the pump here in Texas, so it's a no-brainer.

As you can see at 25 PSI, the car made 629/490.

I'm decently happy, but will be upgrading probably to a GT42R, as I really want to break 700whp on pump gas.

riggse85pump-1.jpg

Also, took the car to be weighed, and I was pleasantly suprised.

With full interior minus a passenger seat, and 3/4 tank of gas, the car came out to 2890 lbs.

Photo-0009.jpg

Look for a larger turbo, and big power numbers over the next few weeks!

  • 5 months later...
underground Collaborator

underground

Posted
  • Author
Posted

Update:

Wanted to welcome Deatsch Werks to the list of corporate sponsors on the project car.

We went back to the dyno this past weekend with a set of 1600cc DW Injectors, and they performed flawlessly. The car now has plenty of injector for the current setup.

With that being said, the day didn’t end up as we hoped. We maxed out the dual Walbro 255 lph fuel pumps @20 PSI on E85. The car made just over 650whp before we had to call it a day.

I made a call to my friends over at MagnaFuel this afternoon, and they suggested their street friendly, Inline Protuner Series Fuel Pumps. The particular model they suggested is MP-4303 rated at 2000HP in N/A Applications using gasoline. (good for around 1300 HP on E85).

What’s unique about their race pumps is they are E85 compatible, rebuildable, and they don’t require a fuel controller like the Weldon’s. (And various other brands of “race” pumps.) This is a significant cost savings, and makes this pump is fairly “bolt-on” affair in a car with an aftermarket fuel system already installed.

The new fuel pump will be installed in the next two weeks, and I will write a review for those that may be interested in our findings.

We knew three weeks ago the 1000cc injectors and dual walbros were not going to get us to our goal, but I wanted to see how far they could be pushed on the E85….as I know many on here are debating switching over in their own vehicles.

Here’s the latest dyno video, notice the fuel pressure gauge video at the end:

19e0811b-2a5d-41cc-a442-9a47013f8de5.jpgUnderground Motorsports Demo Car1998 RB26DET 240SXMaxing out the dual Walbro 255lph Fuel Pumps at 650whp@20 PSI.Borg Warner S374 Turbo, 1600cc Injectors, E85 Pump Fuel, AEM ECU, etc.

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
 Share
Go to topic listing


  • Latest Posts

    • The Bogan
      NC MX5

      By The Bogan · Posted

      The final part arrived today to un-clampify and simplify the intake Who would have though a 1/2" hose stainless bulkhead fitting designed for below waterline bilge pumps would be what I needed Test fit on a 3" offcut I had laying around to see if it would work, and it worked a treat All going well the intake will be on its "final version" tomorrow 
    • Komdotkom
      R32 Gtst - Track Car

      By Komdotkom · Posted

      Good luck on the weekend mate
    • Duncan
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Duncan · Posted

      Must have been an absolute nightmare to drive when the power steer was out, the rack ratio/wheel size/caster is all set up for power assistance
    • Duncan
      New

      By Duncan · Posted

      Welcome to SAU, what are you looking at buying?
    • GabsReDeal
      R32 GTS (RB20DE) Injectors Replacement

      By GabsReDeal · Posted

      I checked the injectors again (1 and 2, since they’re easiest to access) to make sure they weren’t clogged. Even though the entire fuel system had been cleaned, I wanted to be certain. Everything looked clean, so I reinstalled and connected everything. When I started the car to confirm everything was okay, it immediately revved up high, so I shut it off straight away. I checked to see if I’d missed a vacuum hose or something, but everything was connected. On the second attempt, the car ran without the high idle, but I noticed a distinct “compressed air” sound coming from the engine bay. Tracing the sound, I pushed injector #6 forward slightly and the noise stopped — it turned out it wasn’t seated properly, despite the fuel rail being bolted down. While holding it in place, the car idled steadily without stalling and ran for over 5 minutes. At this point, I pulled all six injectors out just in case I hadn’t seated them correctly or dirt had gotten onto the O-rings. Unfortunately, I discovered that I had damaged 3 out of 6 injectors (the OEM 270cc ones) during installation. So yes, this was my fault. Since only the pintle caps were damaged, I’ve ordered a Fuel Injector Service Kit from NZEFI to refurbish them. In the meantime, I reinstalled my new injectors – the car now idles fine for over 15 minutes without stalling. I have not attempted to drive it so far. It’s not perfect yet, as it hesitates when the throttle is pressed, but it’s a big improvement. Unplugging the IACV with the new injectors idles at around 800rpm, even with the IACV screw tightened fully. But this is probably due to tune.
×
×
  • Create New...