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Underground Motorsports: 1998 RB26DETT 240SX 800 HP Build

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Old Sep 7, 2007 | 11:29 AM
  #61  
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Hey how did you happen to make the Supra TT rotors fit on the 300zx calipers?
Old Sep 9, 2007 | 04:44 PM
  #62  
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McKinney Motorsports in Murrieta, CA makes a spacer bracket, just give Mack a call.
Old Sep 27, 2007 | 05:53 PM
  #63  
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I was hoping this was going to be a bolt-on affair, with just new 4" piping needing to be fabricated......right....

The new turbo hit the valve covers, so Jason @Matchless Performance came to the rescue to modify the exhaust manifold.

The block looks so lonely without it's friend.

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Starting the modification work on the manifold, basically changing the angle on the flange so the turbo sits flush.

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So now....the actions shots...

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Borg Warner 74mm vs my old 63.5mm GT4088R

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[IMG]http://i175.photobucket.com/albums/w129/r25558/riggs240sx014.jpg[/IMG

Man, Jason knows how to work by the clock. Took right at 3 hours from start to finish, very impressive.

Look at the clearance....Almost makes me want to go bigger, hum....



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Old Sep 27, 2007 | 06:03 PM
  #64  
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looking good as usual bro
Old Sep 27, 2007 | 09:28 PM
  #65  
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GOOD GOD OH MIGHTY, makes me just want to kick the sr20 and go rb26! How much time do you have in this build, few years?
Old Sep 27, 2007 | 10:59 PM
  #66  
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Most of what you see has been done in 2007, but the car has technically had the RB26 swap since 2004.
Old Sep 27, 2007 | 11:28 PM
  #67  
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Originally Posted by underground
Most of what you see has been done in 2007, but the car has technically had the RB26 swap since 2004.
Faster than I can say for my project, I've been working on it for almost 2 years, after 1 year i my shop setting, its finally running!

Link if you havn't seen it:
http://www.club240.com/forums/showthread.php?t=36875
Old Oct 1, 2007 | 12:47 PM
  #68  
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Wow, great job!
Old Oct 1, 2007 | 01:17 PM
  #69  
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I really expected that you would be putting a man sized turbo on this....not that little hair drier....hehehe

Looks Good
Old Oct 1, 2007 | 01:18 PM
  #70  
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Originally Posted by s13guy
Hey how did you happen to make the Supra TT rotors fit on the 300zx calipers?
This is what is on my car in the sig as well. Worked nicely
Old Jan 31, 2008 | 08:00 PM
  #71  
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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.

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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/videoplay?do...90394196&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.
Old Jan 31, 2008 | 08:15 PM
  #72  
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the car sounds bad *** man i love it but i got 1 question i see the turbo is really close to the brake master cylinder are u gona make a heat shield?


i wouldnt want the brakes to fail on this baby at the track
Old Jan 31, 2008 | 08:20 PM
  #73  
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looks clean! sounds very nice too! much props to underground motorsports

p.s. thanks for the rebuild kit. came in 2 days earlier than expected
Old Feb 1, 2008 | 07:22 AM
  #74  
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i swear i saw this car on ebay
Old Feb 4, 2008 | 06:14 PM
  #75  
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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/videoplay?do...87815456&hl=en



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