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Single Turbo Skylines

Guest Silver_GTR34

By Guest Silver_GTR34,
in Engines & Forced Induction

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JimX Grand Master

JimX

Posted
Posted

It is easier and cheaper to get big boost happening with a single turbo. The main advantage of the two turbos is for better response low-down. If you're not concerned with this then there isn't much point having 2 turbos.

Of course, the twin turbo setup on the GTR is better than the single turbo on the GTS-t. But the GTR owners doing the single turbo conversion are usually bolting on one bigass $10k+ Trust turbo or the like, not a small turbo off a GTS-t :D

Doctor Mentor

Doctor

Posted
Posted

I dont know about the lag difference between using 2 smaller turbos and a larger single. From what people have said and tried, is that the single can be equally laggy if not better than the twins due to all of the exhaust going into the one turbo to hel pspool it up and not being halved to run two of them. Hope that makes sense, Im very tired!!!!

Leewah Veteran

Leewah

Posted
Posted

When I decided to do a complete rebuild of my engine, I decided to go a large single setup instead of a medium twin setup like a 2835 or 3037S for a number of reasons.

Primarily, price. With a TT setup, you have almost double the costs in dump pipes, wastegates and the like.

A single setup only requires one dump pipe and one wastegate.

Also the large single turbo is less laggy than the above mentioned twin setups. My turbo will spool at about 4300 and keep climbing past 8800. My rev limiter is currently set to 9000rpm in an effort to make the engine last as long as possible. The turbo itself is good for 35psi which would create as much as 500rwkw at the wheels in a GTR with the correct setup engine.

A twin setup such as the 2835s or 3037s setup won't spool till after 5000rpm unless you do a larger bottom end like Munro.

PA080028.JPG

predator Grand Master

predator

Posted
Posted

What about rigging up a sequential turbo setup to a GTR? Is that common, or too much effort? Wouldn't that overcome the problem of lag and give the best response over the whole range?

I'm talking about mainly Japan, because i know there aren't too many GTR's out here comparitively, probably even less modified.

JimX Grand Master

JimX

Posted
Posted

I think sequential turbos are largely a waste of time for a performance car. They only really improve driveability. They also lower your off-boost threshold so you'll probably find that you're always going through more fuel.

To overcome the disadvantage of not having a sequential turbo setup, launch from a higher RPM and keep the revs up.

Leewah Veteran

Leewah

Posted
Posted
Originally posted by brendanf

hoe lee fark that is a nice engine !!!!

Are you sure you couldn't have fitted a bigger turbo to that ???  

Appreciate the comments all.

Yes I could have gone a bigger turb than that but this one suits my hp requirements at the mo :D The only thing is that if I do go bigger now, I need a new manifold which positions the turb further forward. I do know of a car running the larger turbo and it's making 460rwkw on PULP on a base mapping :eek:

The turbo itself isn't actually a T88 but a Garrett equivalant which was custom sized wheel and exhaust housing to suit my requirements of a faster spooling turbo. The exhaust housing is the size of a T78.

where can i get an intake pipe like the one on there?

Call Unifilter and they can sort you out. That's a 5" pipe they usually fit to trucks.

Leewah Veteran

Leewah

Posted
Posted

Dude,

Obviously you weren't looking close enough to the 2 cars :P

Ben's turbo is BIGGER for one, his intake piping goes down through the chassis to the bottom where the indicators are on a stock front bar, and most importantly, his car is white!!

His rocker covers are black (used to be red), and his radiator shield is a stainless silver piece.

His intake plenum ain't stock. His catch can looks different. He runs Tomei cam gears.....

Should I go on???

:shake: :shake: :shake: :shake:

Originally posted by INASNT

dave isent that engine pic of one of bens cars from race pace??

i have seen that engine bay in the flesh and your car in the flesh and things dont add up :confused:

:shake:
Guest INASNT

Guest INASNT

Posted
Posted
Originally posted by Leewah

Dude,

Obviously you weren't looking close enough to the 2 cars :P

Ben's turbo is BIGGER for one, his intake piping goes down through the chassis to the bottom where the indicators are on a stock front bar, and most importantly, his car is white!!

His rocker covers are black (used to be red), and his radiator shield is a stainless silver piece.

His intake plenum ain't stock.  His catch can looks different.  He runs Tomei cam gears.....

Should I go on???

:shake: :shake: :shake: :shake: 

:shake:

hehehehehe, smart ass!!

i always thought u had twin low mount turbos on yours?

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