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 Single Turbo On V8's - how is the plumbing run?  

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Garfield Gangsta
  • Garfield Gangsta
  • up the death penalty
  • Member No.: 59,532
  • Joined: 13-January 07
  • Posts: 2,198
  • From: Brisbane
Post #1 post 24th July 2007 - 07:04 PM
I've been tossing up the idea of adding turbo's to my car, but i'm not really sure about the size turbos to use. I've been looking around at some prices and what not.

What I'm thinking of is one single large turbo. I've had a look at some setups like this, but cant see how they run the plumbing properly in the photos. From what i see (for arguments sake the turbo is on the left of the car) the exhaust runs out of the right hand bank then cuts back under the gearbox before the firewall and back to the left hands banks extractors in a U shape basically, then keeps moving forwards into the turbo. But wouldn't that create problems in the flow? Is it the really the only way it can be done?





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DamoVSwgn
Post #2

id say that would be the only way. but i wouldnt kno thats just wat i think

DAN-O
Post #3

Interested to see how this thread go's as have been thinking about this myself.(Single turbo kit on my 355).Seems to me these sorts of manifolds must really heat up (more than average) and like you said have some flow problems.Has anyone used one of these kits?. I have seen kits on e-bay and they look rough..

smiley
Post #4

QUOTE(DAN-O @ Jul 24 2007, 07:28 PM) [snapback]1281272837[/snapback]

Interested to see how this thread go's as have been thinking about this myself.(Single turbo kit on my 355).Seems to me these sorts of manifolds must really heat up (more than average) and like you said have some flow problems.Has anyone used one of these kits?. I have seen kits on e-bay and they look rough..


surely a twin turbo setup would be more efficient wouldnt it?

fatxr8ute
Post #5

Depends what car/engine your going to use. Take for instance a holden 308 or injected 5 litre. You can turn the exhaust manifolds around (put the left on the right and the right on the left). This will point the outlets forward. Then you make up a Y shape piece and mount the turbo where the battery would normally be. Then you simply run the exhaust out under the reverse mounted headers and out the back. Really very easy to do. If your gonna use a 5l, your best off running a turbo off a 8-14 litre diesel engine. They are cheap and will make bulk horsepower with out having to rev the engine to huge RPM.

TTBOOST
Post #6

go the twins tongue.gif

Nathan
Post #7

I myself have a Twin Turbo LS1 and love the throttle response, the power is always there and at safe running 12 PSI.
57QLN
Post #8

QUOTE(fatxr8ute @ Jul 24 2007, 07:35 PM) [snapback]1281272867[/snapback]

Depends what car/engine your going to use. Take for instance a holden 308 or injected 5 litre. You can turn the exhaust manifolds around (put the left on the right and the right on the left). This will point the outlets forward. Then you make up a Y shape piece and mount the turbo where the battery would normally be. Then you simply run the exhaust out under the reverse mounted headers and out the back. Really very easy to do. If your gonna use a 5l, your best off running a turbo off a 8-14 litre diesel engine. They are cheap and will make bulk horsepower with out having to rev the engine to huge RPM.

WTF it surely cant be that easy if so you are a fukn genious have you done it yourself

fatxr8ute
Post #9

QUOTE(57QLN @ Jul 24 2007, 07:58 PM) [snapback]1281272959[/snapback]

WTF it surely cant be that easy if so you are a fukn genious have you done it yourself



It really is that easy, especially on VN-VT 5 litres, even works on the V6. Sometimes you need to look out of the square.

Mocked up a VNSS a few months ago and worked out it would cost less than a grand to mount a single turbo this way, and that included running the exhaust from the turbo to the cat convertor.

ned
Post #10

this guy speaks tha truth. it really is as easy as swapping standard manifolds around with a turbo flange on the end.
theres is a fuckoff quick yellow torana drag car that runs this same setup.

anyway, about the topic. with single turbo setups on V engines, i didnt think that both exhausts fed the one turbo. i thought on side used normal extractors to Y-pipe and then the turbo on the other side???
correct me if im wrong but trying to get both banks into one turbo sounds redicolous and unessacary unless your trying to spin some huge truck turbo.

Garfield Gangsta
Post #11

QUOTE(ned @ Jul 24 2007, 08:52 PM) [snapback]1281273189[/snapback]

anyway, about the topic. with single turbo setups on V engines, i didnt think that both exhausts fed the one turbo. i thought on side used normal extractors to Y-pipe and then the turbo on the other side???
correct me if im wrong but trying to get both banks into one turbo sounds redicolous and unessacary unless your trying to spin some huge truck turbo.



Have a look at the attached pics. I thought feeding them both into the turbo would be the only way to go. But is there really a need to run them both into one? You reckon there'd be much difference?

Also... the engine I'm talking about is the Nissan vh45de.
IPB Image
very cramped engine bay.

MrDOHC
Post #12

dont like the way the first pic runs, wouldnt it be best to have both headers feeding the turbo, not one kinda feeding thru the 2nd then to the turbo

modified minis
Post #13

my set up is like in the 2nd picture. pipes go to the front and the turbine is hooked up in the corner.

ned
Post #14

personally, i think its a waste of time, room and money trying to get both banks into one turbo. just have the turbo running off one bank and the other bank a normal NA setup. especially since it is a nissan V8, which means it can rev alot better than a old skool V8.

if it was me, i would treat the setup as a 2.2L 4 cylinder and make my turbo selction based on that.

DVS88
Post #15

problem with that is that you are working one bank harder than the other and you still have to feed a 4.5 l v8 it is not that difficult just to connect them and run the single

ned
Post #16

hmm whoops, my post didnt make much sense. i meant one exhaust feeds one turbo and one turbo feeds both banks.

Big Matt
Post #17

Yeah but mate think about it you are still placing a heap of uneven presure/back pressure on the engine the crankshaft wil break in two. you must run both abnks of pipes through the turbo.

dysfunctional_73
Post #18

Personally I have a large single turbo set up on a V8 Chev 6.5L turbo diesel. The far bank runs back down and across and under the rear engine section and joins into the exhaust manifold under the turbo, if that makes any sense. Although the engine has been fitted into a landcruiser, they come crated from the states with this type of turbo set up.

Andrew_OYE44
Post #19

The ease with which it can be done to a V8 5L almost makes me want to go buy one.

Interesting topic smile.gif

Damone
Post #20

QUOTE(DVS88 @ Jul 25 2007, 01:29 PM) [snapback]1281274702[/snapback]

problem with that is that you are working one bank harder than the other and you still have to feed a 4.5 l v8 it is not that difficult just to connect them and run the single



The Nissan Leopard (i beleive) runs a single turbo off one bank from factory. I believe Yotis used to have one.

Also, i think that hoon has a single turbo setup on his VX SS commodore.

vh-holden
Post #21

QUOTE(Damone @ Jul 29 2007, 12:16 PM) [snapback]1281284559[/snapback]

The Nissan Leopard (i beleive) runs a single turbo off one bank from factory. I believe Yotis used to have one.

Also, i think that hoon has a single turbo setup on his VX SS commodore.


and if it is a GEN-T kit, it would be fed from both banks.

Damone
Post #22

QUOTE(vh-holden @ Jul 29 2007, 12:52 PM) [snapback]1281284573[/snapback]

and if it is a GEN-T kit, it would be fed from both banks.


yeah cant remember exactly.

Brendan_r
Post #23

thought i better add in here that i have a turbo sitting here its from a diesel engine its a shwitzer.........still seems in good nick........might have to rebuild it and sell it nice n cheap if someone is intrested in doing one of these setups?? pm me if you want pics.

headsense
Post #24

http://www.ststurbo.com/home and http://www.turbomustangs.com/ both have plenty of info and build photo's for twin an single V8's .

Both singles and twins have there pro's and cons depending how much coin you have , your ulitmate goal , fuel system and time and effort involved . Have been involved with twins on chev small blocks , hell strong but would personally go slightly larger single . Just roughing out a Cleveland with reverse manifolds soon as the law doesnt like the 6/71 much . Considering Holset HX series as used by Cummins , brand new cheap or rebuilders from factroy or aftermarket , noting only oil cooled bush type but suits me .

Probably habe spme manfold and build photos on file , ripped from the www if you cant find em

vh-holden
Post #25

the STS systems are a remote mounted setup with the turbo at the back of the car.

Anchor
Post #26

Like this.. But you'd probably want some sort of heat shield inbetween the zorst and intake..

IPB Image

Luke
Post #27

that is one huge fucker of a turbo eek.gif

obrim
Post #28

Holy crap Anchor, that is one nice setup drool.gif

What would all that piping be made out of? Looks cool.

fatxr8ute
Post #29

Looks like its HPC (ceramic) coated. I had this done on a set of extractors, an inlet manifold and a carby. Looks good but mainly to keep the heat sealed either in or out.

headsense
Post #30

heres another one fox body mustang on windsor block , anyone tried the rear mounts like STS , il ike the idea but never tried it

obrim
Post #31

Looking at these I can see why a twin turbo setup is used by many on V6/V8's.

It seems so much simpler!

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