UNDERGROUND: Twin Turbo RB20DETT and RB25DETT Adapters RELEASED

[underground]

Hey NICO,

I am extremely excited to announce our new Twin Turbo kits for the RB20DET and RB25DETT motors.

Our adapters allow you to mate the RB26DETT exhaust manifold and twin turbo's on in about two hours.

This simple upgrade allows you to have a 450HP, streetable, daily driven, reliable Honda killer.

While there are some with deep pockets, the average person, can't afford to drop 12K on a RB26DETT swap.

This kit will allow you to have the same power output at about a 1/4 of the total costs.

We are preparing a press release and will have more photos available before the end of the week.

Kits are slated to MSRP at $399/ w free shipping! Introductory price for a short time only.

Orders will begin taking place on Monday, August 16.

Are you prepared to be GTR powered?

Chrishttp://www.UndergroundMotorsports.com

[SeVa-S13]

This $399 will include what exactly? Sorry...I'm not very patient. =\

[Hijacker]

something tells me that these kits don't include the manifold nor the turbos

[Checkered-Member]

Lets see if I get this correctly,

This product allows you to use a turbo manifold on a RB25 you would originally use on the RB26?

Wouldn’t it be more effective to use two custom manifolds…?And twin turbo = twice the IC piping, twice the down pipe twice the oil lines…list goes on…

why would convent the RB25 to TT? the high horsepower (600-900) RB26 convert to one turbo...above 900 all use twin…

[RedHatchback]

Quote »something tells me that these kits don't include the manifold nor the turbos[/quote] Prolly not

[SeVa-S13]

Yeah, wasn't expecting all that but from what I've heard/understand, the RB manifolds are mostly interchangeable as is. So what I'm looking for is what's needed to make this mani work with my 20, and what exactly it entails.

[underground]

This kit was designed for the person looking for 450 HP, that wanted to have minimal mods besides piping.

We all know that TT setups are very popular for their streetability.

This kit was designed for the RB20 customers, but because the exhaust manifold designs are the same as the RB25, it can be used on it as well.

The kit includes the adapters, bolts, all additional hardware.

We are working on locating turbo's and manifolds. But, this is not much of a worry. They are easily available on Ebay, as well as all over Australia and Japan.

We will be locating them and stocking them for our US customers.

[underground]

Basically, the internals on the RB20DETT are good for about 400whp, so this kit is very practical for this application.

A simple change of cams, and you can maximize the use of these turbo's.

Nothing like the sound of a RB20DET, especially when twin turboed.

I am working on pics, and vids as we speak.

Chris

[underground]

Now, if you guys are expecting conversion hardware, turbo's and manifolds, you are going way overboard for $400. Lol

I'm all about haggling, but let's be realistic.

Chris

[Hijacker]

chris. what i'm trying to understand is why the kit is needed? i have friends in australia, and one of them owns an R33 GTS-T and they swapped the TT manifolds from the 26 over with no problems.

[underground]

They didn't just swap it. It's not a bolt-on. I wouldn't be selling a conversion kit if it was.

You will have to make the hardware in order for it to work. Its easier just to buy it and save yourself the blood, sweat, and tears.

Thanks for your questions.

Chris

[underground]

In terms of piping, you will have to have custom downpipes fabbed. But, you would have to do the same going with the RB20DET stock turbo anyway.

There will be some minor fabrication required, but I know the end result is amazing.

[SeVa-S13]

Well my downpipe fit from the clip but that's beside the point.

I'm not tired yet so prepare yourself for more questions. Har!

Is the kit all in the pic? It seems to be a rather thick gasket/spacer of sorts. Care to shed some light on this? And what advantages does the person looking for 400hp get by going with this kit versus say a traditional large T3/T4 or straight T4, or even a GT series for that matter?

I'm not meaning to bash in anyway, I just like to get different perspectives and options...and love the bling factore of two turbos.

[underground]

If you use Top Hat's Mounts, you will have to run with a custom downpipe according to my conversations with him.

I can't validate this as I haven't used them on my personal cars.

** The kit is shown in the pics... This is everything you need to get the exhaust manifold to boltup.

You use the thicker spacer to push the exhaust manifold a little further from the motor. This will keep the twins from hitting the motor in case you wanted to upgrade.

In terms of advantage, you have the traditional smooth come to boost the TT setups typically offer.

This will make the car more streetable, and won't give you whiplash like many T3/T4 setups. No more singles that don't make power til 4000+ RPM.

The gradual rise to power is much better, that's the main benefit.

With the RB26 T28 twins, you should be seeing boost in the 3000 RPM Range. Would be great for drifting as you would have much more low end power. This setup is VERY RESPONSIVE!

OH, and YOUR TT.

Did I mention you would have TT RB20? Lol!

Chris

[SeVa-S13]

Any estimates on what a stock Rb26 mani and turbos would run the customer along with the kit? And would it come with required coolant and oli lines/fittings?

(I probabaly won't stop asking questions 'til I pass out at the keyboard. The idea of TT kinda got me excited. Tight pants and all, you understand.)

[underground]

At this very moment, I have found stock twins and manifold for as low as $500 for all three.

However, if this kit makes a big hit, you are going to see these prices rise drastically as all the RB26DETT guys are going to want a premium here in the states.

Its supply and demand. Same as with the SR and RB motor prices.

[MainEvent212]

hm...for that cheap? could i stick a trubo from an RB26 onto my sr and make more power then the stock t25?

[SeVa-S13]

I dunno but I doubt it, the stock twins aren't very good for single usage.

Oh, and Chris....say I *didn't* want to upgrade the turbos in the future, could I forgo this kit and just slap on the stock 26 mani and turbos? And with this spacer in your kit, will the turbos' outlets clear my steering shaft? S13, naturally.

[underground]

The Japanese typically swap the single RB26 onto the SR20 motor for drifting. Kenny was telling me about this, my old Japanese employee. They use them for drifting as the response is better. It's typically only swapped onto novices car who are trying to learn. Gives you near instant response, but you aren't really gaining anything HP wise.

[underground]

Nope, you have to have the kit. The RB26 manifold and turbos are not a bolt-on. This actually works as a conversion bracket just like our Supra Big Brake Kit.

[PalmerWMD]

These adapters sound very cool.

I always liked the RB20 and having it as a TT well..:naughty

Fred..

[underground]

Yep, Yep....Let me know when you need a set!