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R33gtr Upgrade Twin Turbos Or Go For Single Turbo

Bakes

By Bakes,
in Engines & Forced Induction

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Bakes Mentor

Bakes

Posted
Posted

Going through the RB26 turbo upgrade thread it looks like most people upgrade the twin turbo set up and get great results.

What are the benefits of pulliing the two turbos out and just getting one big one?

Is this seen as a better or worse option that upgrading the two turbos or is it no difference?

Would one turbo make more power than the twin turbo set up?

Sorry for the ignorance but Im a GTR newbie trying to build up knowledge as Im seriously considering buting one in next few months.

Cheers

Bumblebee Experienced

Bumblebee

Posted
Posted

i think the reason behind most twin turbo upgrades apart from the obvious more power, is because it still looks factory..

so when a cop opens ur bonnet, instead of havin a 600hp massive single sittin all high and mighty, u have the same 600hp but in theyre stock locations. meaning as far as the cop knows, its a standard GTR...

plus that also means, u can use standard oil lines, water lines, dump pipes and everything else provided they are a bolt on replacement for the GTR :)

GTR 400 Enthusiast

GTR 400

Posted
Posted

If you do your typical mods like Front mount intercooler,Tomei stage 2 cams with adj cam gears, injectors, ignition coils,exhaust turbo back, ecu usually Apexi Power Fc, and either Garret ball bearing direct spec replacement turbos to factory which i have or N1 or hks this will still give you fantastic street responce actually better than factory responce great drivability and round about 330 to 370Rwkw max depending on the engine as to how new or tired it may be getting. I still have factory air flow meters and got a 352Rwkw and i am installing the Tomei stage 2 cams now which i know yield great results as one of my close buddys has the same as me and achieved 375Rwkw with all the same mods listed, hope this helps.

SLIPPERY Experienced

SLIPPERY

Posted
Posted (edited)

its just easier to replace the twins because you can keep your exhaust manifolds and inlet piping the same. Plus, you dont have to buy an external wastegate. Replacing things like this isnt cheap

Also, the response and top end of the twin bolt ons can both be phenomenal with spool up superior to a big single due to less rotating mass/inertia

Personally, i like the idea of having a non-defectable, factory looking, 11 second street car. Not many other cars can claim to be that

Edited by SLIPPERY
Angus Smart Grand Master

Angus Smart

Posted
Posted

If your to go the twin way, remember to do dump's and front pipe also. add that to your cost. as your alot better off to do this while the turbos are off. it will save time and money!!

Snowman Grand Master

Snowman

Posted
Posted

I'm yet to see a justification for dump pipes. Front pipes yes - dump pipes in theory but I've never seen a difference in real life (I'm still running the standard dumps and have looked at comparitive dyno graphs with cars with the same turbo's / engine as me and there's no difference).

But thats another story.

My opinion is as above. Unless you are going REALLY big power then twins are the answer.

sewid Grand Master

sewid

Posted
Posted
I'm yet to see a justification for dump pipes. Front pipes yes - dump pipes in theory but I've never seen a difference in real life (I'm still running the standard dumps and have looked at comparitive dyno graphs with cars with the same turbo's / engine as me and there's no difference).

But thats another story.

My opinion is as above. Unless you are going REALLY big power then twins are the answer.

The R34 dump pipes are great from the factory.

The R32 and R33 are significantly worse.

fieds83 Rising Star

fieds83

Posted
Posted

Go garrett and you should not be spending more than $2,500 for the turbo's alone. About $2,100 for a pair of 2560's. Greenline and Nengun are overseas mailorder traders that are only necessary if you are going with trust or hks etc. All garrett stuff is in stock in most states. For your power goals, i think the 2560's would be a great choice with nice early spool and great power potential with the right supporting mods.

GT-R32 Grand Master

GT-R32

Posted
Posted
except that there is none available from garret currently (-5's that is).

I have a set which haven't even been fitted yet. If my car sells (somene genuine seems interested and approached me, jyst depends on their cirtcumstances), I'll be selling them separately.

You can run 11's on the stock turbos if you can drive.

Its been done before a number of times

I would have left mine, but the factory ceramics scare me with the horror stories... I wish I could just leave with nothing hanging around in the back of my mind! Even though the car is so new, I still would rather be safe than sorry...

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