Underground Motorsports: Project 800HP RB26DETT 1998 240SX

[Carl H]

nice use of the mocal oil stat, also good to know you can yank off the factory crappy cooler.

[l0nestar]

Mocal + Setrab... yum! I assume the 'upper' is the input on your heat exchanger and the lower is the 'output' for better drainage?

[underground]

Mocal + Setrab... yum! I assume the 'upper' is the input on your heat exchanger and the lower is the 'output' for better drainage?

One is the supply to the oil cooler, one is the return from the oil cooler.

The kit is $585 shipped with the 925, which is WAY larger than any other RB Oil Kit on the market.

Even the HKS uses a much smaller setup.

It is also thermostatically controlled, so that is allows the motor to heatup.

Once the oil temperatures reach 180 degrees, it opens to allow cooling of the oil.

Very trick kit.

[underground]

Yesterday, Andy (Southern Imports in Murfreesboro, TN) began finishing out the fuel system, which should be done today.



Up Next was the Exedy Triple Disc Clutch, special thanks to the team at Exedy for their support over the years.









Ran the -10 AN Lines from Desynz Motorsports Oil Return Mod from the back of the head to the oilpan, as seen in the following two photos.





Finished the lines to the cooler, so that mission is completed.

[l0nestar]

Looking Good underground!

How hard were those braided hoses to make? (I saw the guide on making your own oil cooler, so I have an idea.) Just interested in your opinion / input.

Am I seeing correctly, the ends are from Summit? (not that there is anything wrong with that, just saves me a few $$!)

[RB_Dreamin]

Looking Good underground!

How hard were those braided hoses to make? (I saw the guide on making your own oil cooler, so I have an idea.) Just interested in your opinion / input.

Am I seeing correctly, the ends are from Summit? (not that there is anything wrong with that, just saves me a few $$!)

nothing hard about building a kit, just buy the thermo fitting, some adapters, ss line and the cooler core.

precrimped lines are cheaper and cleaner. only downside is you need to measure it correctly before you buy them.

[underground]

I bought the parts from several vendors to make the kit, but some of the pieces I did buy from Summit.

Making the lines is not very hard, just need the right tools and patience.

[underground]

A shot of the finished oil cooler assembly:



McKinney Motorsports Race Motor Mount Kit, transmission Mount, and Driveshaft







Everything on the bottom fitted up nice and snug:



Step-by-step Photo Guide:

Greddy RB26DETT manifold, adapted to run twin-scroll and the Tial Sport 60mm wastegate.

The wastegate had to be moved to fit into the 240SX engine bay.

[RBMonster]

Ummmmmm yeah. Thats the sex. Hey underground, know where to get those million dollar dowell pins for a 26? Hopefully you do cause i need some.

[underground]

RBMotoring.com, ask for Kenny.

[Xylemer]

Hey everyone I would like to take a second to introduce myself. My name is Andy Vaughn and I work at a shop in Murfreesboro, TN called Southern Imports. I am fairly new to the motorsports scene, but I’m determined to make a name for myself. Chris has given me the chance to work on his wonderful project drag car with high hopes of having a fast, show worthy 240. I truly have learned a ton about RB’s with the help of Kenny at RB Motoring and Dane at Desynz Motorsports. I am more than happy to share what I have learned, though I am limited on time (I work two jobs and I have a wife and a son). If anyone has any questions please feel free to email me ([email protected]) or pm. I am no expert and I do not claim to be. I just love cars and I want to learn as much as possible. Thank you for taking time to read this, and wish me luck, this car has to be done by June 2nd.

[Shocker]

where did you get that tubing from? and how thick is it?

[underground]

Drop Andy (Xylemer) a PM, as he purchased that particular piping.

[mig240sx]

Sup Undergroud, got a question for you. With 700+ horses, how do you plan to workout the traction issue on street tires? On one of your past post, you stated that you had issues with tires spinning when racing some exotic car after a show; with your tires are spinning in launch, a lower powered car will take you and run a better time. I ask because I did a 1jz swap in my s14 and traction is an issue. I am trying to stay away from slicks at the track and I want to keep good tires for my daily driver (1j'ed s14).

[underground]

Sup Undergroud, got a question for you. With 700+ horses, how do you plan to workout the traction issue on street tires? On one of your past post, you stated that you had issues with tires spinning when racing some exotic car after a show; with your tires are spinning in launch, a lower powered car will take you and run a better time. I ask because I did a 1jz swap in my s14 and traction is an issue. I am trying to stay away from slicks at the track and I want to keep good tires for my daily driver (1j'ed s14).

After talking with Mazworx, I will be replicating their setup.

Basically, replacing every bushing with a solid piece when possible. Full Coilovers, and a full suspension setup by Battle Version.

And at that level, or even close too, slicks are not optional.

[tu_bryan]

nice wokr underground keep us posted!

[underground]

Monday Night, Andy and I worked til 2 a.m. @ Southern Imports to get the motor running.

When we attached the AEM EMS ECU, it started first crank with the AEM supplied base map.

I was very impressed with how simple the box is to use, and I want to thank Sean Morris for taking my phone call late at night to confirm we had the configurations setup accurately.

We still have lots of work left to be done, and these are, by no means, final images.

As you can see, there are aftermarket gauge sensors that need to be hooked up. The boost controller is not installed, the intake for the turbo still needs to be ordered, downpipe has not been fabricated, and the upper intercooler piping has not been polished.

But the motor runs, and that's a success in itself.

Yesterday, I transported the car to Texas, and will be finishing up the car here.

Once again, thanks to Andy Vaughn @ Southern Imports in Murfreesboro, TN. He, by himself, built 95% of the car that you are fixing to see. He is a amazing fabricator, engine builder, and friend. Thanks again Andy!

Here are the images and the start-up video:

[DJButton]

May I be the first to say, Looks awesome man, Andy's done some fine work!

No sound on the start-up video though.

[Coolwhip]

looks great. Work looks top notch! Glad to also see this car back in the scene, as well as another RB back on the road.

[underground]

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:

[Florida240sx]

Nice toy

[underground]

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.

[MOB240]

damn that is a b a d a s s car!!! its also a money pit if ive ever seen one!!! does that beast have power steering and a/c?

good job that car is sweeet!!!

[HxC_Nismo]

its looking really good chris thanks again for you old TT down pipe.

[kjlindgr]

its also a money pit if ive ever seen one!!!

30 corporate sponsors = not a money pit

[240sxHitman]

pure sex!!! love it

[underground]

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.



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.



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

[StricNyne]

do u want to sell yer downpipe you used for yer rb26 twins ? if sooo shoot me a call or email me [email protected] or call 732 552 1467

[underground]

It was sold months ago, sorry.

[underground]

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.



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





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







Borg Warner 74mm vs my old 63.5mm GT4088R







[IMG]http://i175.photobucket.com/albums/w129 ... 0sx014.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....