single turbo v6

[ashzv6]

gday pplz,
sorry if this has been covered before, i couldn't find the exact info i wanted in a search.

with a single turbo v6, would the turbo run from 1 bank of both?

what are the advantages or disadvantages of using only 3 cylinders to run the turbo?

should 6 be used or 3?

would a 2.5inch exhaust be sufficient or would a 3 inch be better suited?

[SweetWagon]

The only way a single turbo set up will work is off both sides full stop, however you can run identical turbo's of each side. and yes 3inch would be the go IMO

[vywgn]

talk 2 Blown VS he just took his turbo setup off his vs so have a word with him as he would know

[pro_gmh]

running a single turbo on a v6 motor is a bit dodgey as you need to run a crossover pipe around the back of the motor. you would be better of running 2x smaller turbos, and turning the stock manifolds upside down and modify the flanges to suit the turbo flanges. then u need to worry about supplying oil and water to the turbos, upgrading the fuel system, and perhaps lower the compression, v8 brakes and diff, it goes on....

hope i havnt scared ya away from doin the conversion. it has been done many times, and what is starting to get popular is dropping in a RB30ET (vl turbo motor)

[ashzv6]

cheers for the replys,
i might be better off running 2 smaller turbos.

i have had my first taste of boost with a little sc14 blower and i want more.
im pretty keen to take on the turbo conversion.

i was just a little unsure about the manifold configuration but now i know.

i have been told a series 1 exhaust manifold might be the go to start a prototype, but are they mirrored on both sides?
by that i mean can i use the left hand exhaust manifiold on the right bank?
and the right hand manifold on the left bank?

[greenfoam]

This is probably the easy way out for you (if you find a large single turbo).

You can leave one header where it is, flip the other one over, weld a pipe into the back of the flipped one and weld a flange or an extension and a flange on the old outlet of the flipped header. Done

Then you need bigger injectors, a 2 bar map sensor, a new tune and hopefully (if you want to go real fast) an intercooler. Instant 12 second car

[deathsminion]

Ugh, that setup is just nasty. You don't have to run a pipe around the back of the motor. My initial single turbo design had it running around the front. Twins are more difficult, as the drivers side turbo dump pipe is a tight fit, especially if you have ABS.

[SweetWagon]

The only problem is there isnt much room for a pipe to run behind the motor, This problem was encounted on the vengence car and they had to run the pipe down in front of the motor as there is heaps of room there.

[pro_gmh]

How much of a problem is the heat? as heat wrapping can be bad for mild steel pipe... rust etc.

[greenfoam]

Ugh, that setup is just nasty. You don't have to run a pipe around the back of the motor. My initial single turbo design had it running around the front. Twins are more difficult, as the drivers side turbo dump pipe is a tight fit, especially if you have ABS.

Yeah man we all know turbo buicks were crap:P, but really if you wanted to make a nice simple do it in one day turbo install and run a 12 the next morning you would have to think about doing it like that

[89vncommy]

I am going to think about the turbo path ... If I were to go a single large turbo, what do you think would be the best for my vn... I have a Garett GT30 in my other car, but that is only a 4cly engine....

I don't want to go out and spend a motsa, just a good set up to generate more power.. I want to go for the sleeper look, so if my fiance drives the car, the cops won't book her for only being on her p's ... (when she finally gets em)

[ashzv6]

ive also been thinking about twin turbos.
have a small turbo running off each bank.

i am still unsure what would be easier.

[89vncommy]

I think you would get better performance out of a single turbo ... And is cheaper ...

I have had friends of friends that have bought Supra tt's and taken out the twins and gone for a single large turbo... They rave about how the single is much better ...

[vywgn]

as i said b4 talk 2 BLOWN VS he took his setup out 2 wks ago, he would have pics and at the HCC dyno day he pulled 198rwkw at 8psi of boost if i remember correct

[SweetWagon]

Another thing thats been left out is the oil lines to the turbo. You could get the pickup from the oil pressure switch but the dump would have to go back to the sump or something, requiring removal of the sump and welding a fitting on.

[greenfoam]

You dont need to remove the sump, but! you will get a metal filing or two inside the sump, hopefully you can flush them all out, if not that's what oil filters are for

I was reading a page in the states once and they just drilled a hol ein the sump above the oil line, then put a thread tap in it with stick grease on it to catch the metal flakes then flushed the sump out. Maybe safer to drill a hole, then weld a nut on the ouside of the hole and put the line into the nut

[colmiller]

That all sounds and look real ugly.

The big thing in California these days are "remote turbos". Believe it or not they stick them at the end of the exhaust pipe towards the back of the car. Their primary motivations appear to be polution control and keeping the car looking & sounding standard to the casual nosey policeman (sounds like a familiar problem).

Take a look at
http://www.superchevy.com/technical/...rs/0411sc_sts/

or do a google on "remote turbos" it may surprise you.

[defa]

i would go single.i have had my manifolds for two bloody years and i want to turbo my car before xmas.. i have nearly everything i need.. i bought my manifolds off geoff whyte. who has a 10 second vn wagon. i was reading a bit about him in street machine.. i am pretty sure he knows his shit.. he said he was making 560 hp or something like that off a single turbo with an internal wastegate.
all he did when he used my manifolds was ran a 7th injector and he drove around for 12 months and did no damage running 12 psi..
i just read that page on remote turbo's that is pretty interesting
also you can run the oil back through the timing case so geoff told me..

[J_D]

That all sounds and look real ugly.

The big thing in California these days are "remote turbos". Believe it or not they stick them at the end of the exhaust pipe towards the back of the car. Their primary motivations appear to be polution control and keeping the car looking & sounding standard to the casual nosey policeman (sounds like a familiar problem).

Take a look at
http://www.superchevy.com/technical/...rs/0411sc_sts/

or do a google on "remote turbos" it may surprise you.

I wouldnt want to run that system on a lowered car on aussie roads.

[defa]

yeah i don't think it would last too long
well not very long at all around here..
it wouldn't last a week on my car. but still the idea seems interesting

[colmiller]

Just a thought but if you continually bash the sh*t out of the underside of your car you must either have lowered it too much for your type of driving or you are driving too fast over roads that arnt suitable for your car's ride height.

[greenfoam]

I seen one of those remote turbo setups for sale on ebay earlier this year or so, It was off a VN 5 liter

[hinterland]

single turbo gt35/40 with ex ar 84 not 106 use 25 mill pipes run x over at back as front has to many heat dramas

[J_D]

Just a thought but if you continually bash the sh*t out of the underside of your car you must either have lowered it too much for your type of driving or you are driving too fast over roads that arnt suitable for your car's ride height.

Its not hard to bash the underside on some speed bumps in car parks. And its not really suitable to slow down to 50 or 60 on a major highway to stop the car from bottoming out, I think everyone else on the road would get the shits with that real quick.

[commy92]

thanks for those photos greeny.. they may look ugly but who the hell can see them when there rapped around an engine anyway.. I think i finally worked out the best way to get my STOCK manifolds linked up.. Then ill just ahve to cut up the passengerside one and run a pipe to the turbo.. mUHHAHAHAhahaha