R33 Gts - Rear Mounted Turbo Build

[Zuydam]

Picking up my new. well not so new 1993 R33 GTS 5 speed manual Tomorrow

and then going to be picking up a mates R33 gtst Engine. to use all the bits and pieces of that for my build

Thinking of putting the RB25det Head on my rb25de this way till have the bigger injectors and what not for the Turbo. ill then be mounting the turbo(Undecided yet) up the back of the car located either behind the diff or somewhere else. i will research and think of a good place for it.

Ill then be designing the piping for the intake on the turbo. compressed air piping run up back to the engine bay into the bottom of the air box and ran into the manifold. making the engine bay appear normal. I will then run the oil feed and return liens down to the back of the engine. but on the return line i will have a Scavenger pump pumping oil to the sump to prevent back up in the turbo and keep it all flowing nicely.

Im going to be taking alot of pictures and getting ideas ready for this project to get underway within the next few weeks.


ECU wise. i need an opinion. im getting the r33 gtst ecu. would i be able to just simply swap that ecu instead of mine then be able to run stock boost.(ill be taking it to a tuner) would it be safe to run until i got it tuned or would it need a tune asap once ive got it all installed. as im goign to build all the mounts and piping over a few months. get it all ready then put it all together over one weekend.

FEEDback will eb much appreciated thanks

Please no hate i got the cash to do it and am on Ps for another 3 years so dont say its a stupid idea. and dont say the turbo will be laggy as f**k. ive researched this. before you judge do some research on the rear mounts.

​Il also post pictures of my skyline

[Bennis]

Has to be a troll... Is it school holidays again lol?

It is a stupid idea and let me tell you why. Use your brain here buddy.

Even if police dont see it, if you crash your car ALL OF your insurance is void. Every last bit of it. Have fun paying for all the damage to the cars or people involved. If someone looses an arm, a leg or dies, youre going to be paying that off for life.

Just putting a 25det on a 25de block doesnt work that way...

Sounds like you have done no research and are just talking crap lol.

The only room for a rear mount would be at the rear muffler too, have fun hiding that. Remember these are low cars. Feeding another set of piping back for the return pipe will not be easy. It would have to be a high car.

The only reason anyone would want to do this is to hide it, but thats what P platers dont get. Even if you can hide it, all it takes is one crash or one half smart police officer to realise what you have done and boom youre over.

Save your money till you're older. Take it from me, I had all these wild ideas when I was younger too. In two weeks I get off my P's.

[Bennis]

And if youre going to be stubborn and do it anyway, just do it the normal route and put black heat shields over everything, black engine bay black everything.

[Mohsen]

Dude. Its not worth the hassle wallah bro.

[ARTZ]

doo eeet...ts n awesome idea...aw put an rb30 block in while you are at it....weapon in diguise...

[AngryRB]

sounds like a cool build, just put the turbo on the roof, that way you'll get some awesome cold air and more power, will pull like a train!! im following this build man!!

[Dose Pipe Sutututu]

sounds like a cool build, just put the turbo on the roof, that way you'll get some awesome cold air and more power, will pull like a train!! im following this build man!!

can you imagine how loud the "dose" will be? fuarkkk

I see pigeons, pigeons eveywhere

[scotty nm35]

I'll just put this here... Works well. Stealth as faurk.

Dooeeet.

[Dose Pipe Sutututu]

only on a big displacement motor, a 2.5L lawn mower won't cut it lol

[owenliberts]

that been dyno'd yet scotty?

[scotty nm35]

Yeh Owen, 280kw at around 12psi I think, running United e85. Lag is non existent with the .82 rear GT35. Quite a different car to drive now. lol.

The carpet is back in the boot, engine bay is stock. Very stealth.

[XRATED]

I'll just put this here... Works well. Stealth as faurk.

Dooeeet.

That's pretty faarking awsome..!!!.

Where the intake?

It would be very tempting to weld up a slip jointed closed exhaust tube to run from the engine pipe to the muffler- just to hide the pipe work going into the boot.

... how hot does the carpet get?

Love it!

[colourclassic]

I'll just put this here... Works well. Stealth as faurk.

Dooeeet.

That is awesome. Boot must get warm.

[XRATED]

Pop your groceries in the boot and dinner will be done by the time you get home

[scotty nm35]

Not much warmer in there than it was stock on a warm day, it gets good ventilation, I was going to cut more vents and perhaps get a small fan or two but there was no need. The carpet barely gets warm due to the heat shield I made, and all the wrapping/beanie.

The turbo doesn't get very hot anyway as it's 4M from the engine, even on the dyno...

[colourclassic]

The turbo doesn't get very hot anyway as it's 4M from the engine, even on the dyno...

Ahh good point, didn't think of that.

Any issues with oil feed and return?

[Ben C34]

Ahh good point, didn't think of that.

Any issues with oil feed and return?

I wouldn't think so. Surely issuing a scavenge pump on the return.

[Weapon]

that is a little bit epic!

[owenliberts]

very nice!

I have a 1uz I'm wanting to put a 35 with a 1.06rear, but i will be doing it it the old school way with the turbo in the engine bay

[scotty nm35]

That was what he wanted Owen, but I told him it is instant defect, and there is no way to get decent pipes through past the motor, unless you want to ditch aircon etc. A lot of thought and design work went into it before we decided on this setup, believe me.

Yep, I fitted a scavenge pump off the drain and fed the oil from the engine oil pressure switch. The only issue was, being a gt35, it needed two restrictors to lower the oil pressure, and stop blowing oil out the turbo seals.

The water was fed from the engine too, to the turbo and gate. The water lines needed to be large as otherwise not much water would flow. It was just easier than running dedicated rear mount water and oil setups with separate pumps and coolers. Looking back I probably should have gone with an oil cooled ceramic bearing Precision turbo.