Underground Motorsports: Project 800HP RB26DETT 1998 240SX

[DJButton]

Fantastic stuff, I love it man!

[Kansei240sx]

Hey you live in Tulsa, Oklahoma now right?

[underground]

Oklahoma City

[bumblebtuna]

WOW

[mig240sx]

I want to see this baby put to use all those pretty colored parts on the track!

[underground]

Here's the latest update, the car is finished with the Borg Warner 74mm Single Turbo, and the new 4" Downpipe and Exhaust. The turbo back exhaust is straight 4� piping broken into three pieces via V-bands. Photos are posted below.

This thing sounds absolutely wicked, and we are putting together a dyno video to post up.

I want to thank Matchless Performance in Addison, TX for the piping work, as it came out flawless.

[Shocker]

4" straight, no mufflers.. that thing has to be farking loud as sh*t!

excited to see the numbers and the vids!

[DJButton]

I'd love to hear some sound clips! Have you decided not to sell then?

[bumblebtuna]

hell yes! in for the dyno vids, stat!

gl with the sale man

[underground]

Sorry for the dusty valve cover shots, I'll get some better ones this week.

Here is the completed engine photos showing the new Borg Warner 74mm ETT Turbo.









We put the car on the dyno this weekend, special thanks again to Chris Hamilton for the tuning. You truly are amazing.

Dyno Video Link:

http://video.google.com/videop...hl=en

At 18 PSI (593whp), the car ran out of fuel, and we found the problem to be a dead Walbro Fuel Pump. We'll be going back this weekend to retune for 25 PSI, expecting around 750whp.

Then onto the C16, where we will shoot for 900whp.

[Cameron]

Your Car is sex man, Good to see another person using a diesel turbo. Borg warner FTW, Holset FTW!

cant wait to see 900... ^__^

is that the Bullseye Power S372?

[bumblebtuna]

nice

[underground]

S374

[Shocker]

Very nice power at that pressure, you taking her to 8k? or beyond?

Also, might wanna wrap that brake master.... she might just melt, also the dreaded ALT belt squeel, lol no Q45 alt?

You just replacing the walbro or going different setup?

[cdorhout]

Can you provide details on the E85 fuel pump?

The fuel pump is the only thing holding be back from going E85. I have an E85 pump 2 blocks from my house.

[underground]

Very nice power at that pressure, you taking her to 8k? or beyond?

Also, might wanna wrap that brake master.... she might just melt, also the dreaded ALT belt squeel, lol no Q45 alt?

You just replacing the walbro or going different setup?

Revving to 8K.

I'm running dual Walbro's, and just replaced both bumps with brand new 255's..

I'll be adding a 3rd in the next few weeks, as two pumps will max at around 750whp.

[underground]

Update:

Went back to the dyno this weekend with new fuel pumps, and ran into our next problem, maxing out the 1000cc injectors at 624whp/442tq.

1600cc injectors are being installed this week, and we'll head back to the dyno for round three, haha.

The E85 really requires big injectors, and I never imagined we would max out the fuel system this quickly. Im guessing we're going to end up with a Weldon Race pump, as the dual walbro's are really struggling to keep up.

Enjoy the Vid!

http://video.google.com/videop...hl=en

[Shocker]

some very nice numbers especially at such low boost. Crazy your maxing out your injectors like that.... at least your figuring out all the issues. Cant wait to see a 30-35 lb pull!

[HxC_Nismo]

did you try to run C16 in it to see if it would break 700hp barriar or what? im so damm jelous chris i want your car so badly lmao. also are you running your stock crank? cause i wasnt sure on how my hp the stock crank can handle. also you now have enough power to run 200mph+. i wanna go for a ride so bad. how much do you want for your gt4088r turbo and also how much do you want for your 1000cc injectors? let me know email me at [email protected]

[underground]

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 is unique about their race pumps is they are E85 compatible, rebuildable, and they dont require a fuel controller like the Weldons. (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:

Underground 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.

[underground]

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:

Underground 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.

[Cameron]

nice i like your choice in turbo

[Shocker]

what a ****ing monster,

how lean were your a/f's when the fuel pressure dropped off? that looked scary!

[wynnEZ]

Very nice work, good luck on your goal.

[240sxHitman]

amazing!.........i want a Rb26 now lol

great work!

[HxC_Nismo]

any updates with the new fuel pump?

[Shocker]

any updates with the new fuel pump?

cars for sale now, I've seen it advertised on a few sites. I guess Riggs its getting divorced and needs the funds.

[Coolwhip]

I believe thats over with now. Yea, seen the car up for sale still.

[HxC_Nismo]

I sure hope that he's not selling that car its so close to being finished

[bumblebtuna]

MOAR!