Super Charger, Twin Turbo Or Single Turbo On My Vx Need Suggestions

[GMHG3N]

hey guys I'm got a vx Calais series 2, i cant decide weather to put a super charger or a twin turbo or just single turbo?

anyone have any suggestions?
cost wise?
what i have to upgrade? :my:
whats gonna be quicker and better for my car?
and where can i get this all done I'm in melb Victoria

[Blown V6 Hatch]

V6 or V8 dude???

[Sphinx]

Guessing by your username it's an LS1. Go a harrop blower setup, no turbo lag to worry about. Harrop do a blower kit for a little over 7 grand. As for single turbo from CAPA you're looking at about 9 grand for the kit.

[OLS108]

Guessing by your username it's an LS1. Go a harrop blower setup, no turbo lag to worry about. Harrop do a blower kit for a little over 7 grand. As for single turbo from CAPA you're looking at about 9 grand for the kit.

agreed,,,,,,,,,,,,,,,,,,,,,,,,,,,

[GMHG3N]

yeah its an ls1

[VLDavo]

go the turbo route might be a little bit extra but its definatly well worth it

[GMHG3N]

more advise?

[LowVp]

don't auto tech do a turbo kit for around the 7k?

[Raptorsc]

Turbo kits are low initial cost to buy but seem to end up to be a lot of $$$ when its actually all up and running well.

Supercharger kits (Harrop) are a good thing, beautiful presentation and good punch. I recently talked to a local here who has had single turbo 5 litre, single turbo LS1 and twin turbo 5 litre and he has had a gut full of turbos. He recently bought the last VZ HSV ute and is going Harrop all the way, would never use a turbo system on a V8 ever again. His reasons are mainly about heat eventually destroying way too many things in the engine bay, which brings endless maintainence. His advice could be worthwhile as the perspective is from a long time turbo V8 owner not someone from the current rash of T and TT kits now on the market. He never complained at all about the power, was more about maintainence and heat damage long term. From what I can see he loved the power and was determined to make it work on each car he upgraded to but in the end .........supercharger.

The above comment does not come from a self promotion point of view as I currently do not sell a product for LS1, but from face to face conversation with a dude who really loved his Commodores

[minux]

Turbo kits are low initial cost to buy but seem to end up to be a lot of $$$ when its actually all up and running well.

Supercharger kits (Harrop) are a good thing, beautiful presentation and good punch. I recently talked to a local here who has had single turbo 5 litre, single turbo LS1 and twin turbo 5 litre and he has had a gut full of turbos. He recently bought the last VZ HSV ute and is going Harrop all the way, would never use a turbo system on a V8 ever again. His reasons are mainly about heat eventually destroying way too many things in the engine bay, which brings endless maintainence. His advice could be worthwhile as the perspective is from a long time turbo V8 owner not someone from the current rash of T and TT kits now on the market. He never complained at all about the power, was more about maintainence and heat damage long term. From what I can see he loved the power and was determined to make it work on each car he upgraded to but in the end .........supercharger.

The above comment does not come from a self promotion point of view as I currently do not sell a product for LS1, but from face to face conversation with a dude who really loved his Commodores

Strange, 2 guys i know with big turbo applications on their LS1 have had no issues at all. One has had a setup for 50,000k, the other for around 11,000k. The first car is used for business use and is a daily driver.
That being said, there is nothing like the whine of a charger and the instant power it delivers.

[Mooks]

I have a GenTT Twin Turbo Kit for sale from ls1 turbo. It is brand new, only taken it out of the box to check it was all there if you are interested. Also have the fuel system with pump and surge tank as well.

I am in Melbourne too, so if you want to go the turbo route, send me a PM

[holden007]

Maybe strengthng the engine for more boost is a good idea especially TT setups, especially High PSI. For a V8 my personal choice would be a supercharger, I watched that video on the Walkinshaw site (VE Clubby with Supercharger) and it went and sound very sweet without the expense of modifying the engine. Plus other things like the gearbox and diff need to be taken into consideration.

[GMHG3N]

what im i look at for a Harrop supercharger? including labour? and strenghting bits and peices?

[Boonz]

anywhere between 12,000 and 20,000 without going too crazy on engine mods

[s_ikari2015]

I'm no genius, but wouldn't the Supercharger provide better breathing on a V8, particularly when cruising? Turbos rely on the exhaust gases and when you're cruising at minimal revs (if you've got a 6 speed) then the turbo wouldn't be providing the same air flow of the supercharger, surely. It may lead to even better fuel economy on ordinary daily driving if you use a supercharger, even though the supercharger is also dependant on revs.

The lag would be something to seriously consider though and on the LS1 I'd personally like the look, sound, lagless power and tidy-ness of a supercharger. Couldn't you just see it sitting all snug like in the plenum chamber?

[Boonz]

not necessarily....more air needs more fuel to stop it running lean... but i think there is an air bypass valve in the manifold to relieve un-needed boost while crusing

[s_ikari2015]

not necessarily....more air needs more fuel to stop it running lean... but i think there is an air bypass valve in the manifold to relieve un-needed boost while crusing

Does that valve exist in the standard N/A V8 manifold or in a supercharged manifold?

Would that valve work for a turbocharger setup?

I've never looked at the Holden V8's closely, but I want to.

[Boonz]

in the harrop one i think... not 100% sure but i would imagine it would need one to act as a waste gate

[s_ikari2015]

I guess it doesn't really matter which way you go, turbo or supercharge, cause you'll probably want to replace the manifold anyway.

[GMHG3N]

it think im heading towords the supercharger... should i defently go the harrop supercharger?

[SICK SS]

not sure on all this talk about changing the manifold standard manifold holds boost fine the only reason you would change it is if you were replacing it with a positive displacement blower. Ive been lucky enough two run both types of boost firstly one was a centrifical supercharger and currently i hav a custom single turbo setup. The supercharger setup sounded awesome but dosnt compare to the turbo setup for power. The single turbo made an extra 373 nm of torque over the supercharger and when you hav cubes there no real such thing as lag it makes full boost by 3000rpm and dont stop pulling until redline were sc wont make full boost until redline and rob the motor of some power. The turbo dose sound very horny when it spoiling. fuel ecconmy was about the same around the 8s to 9 letres per hundred kms and theres never any dramas with belts slipping or breaking with turbos.which ever way you choose you will love boost.try and go for a ride in both if you can that will help make your mind up.

[Commotion]

i got a ride in a VE GTS at work with a PWR intercooled 122 blower and CAM. the thing is shocking on fuel. when customer came in the average fuel consumption was around 25L/100k. it made 375ish RWKW and has more than enough power to be totally useless. it has 305 wide tyres and the is no hope of getting traction even in 4th gear. and im not exageratting. the only thing i dont like is the whine of the blower. i like the sounds of centrifical boosting.

I guess its all about what gets you excited. i love the power of my turbo even though i was trying to sell it to go supercharger for something different. i like the sound they make, nice and quiet except for the whissle. they are a bit more work with having to wait for them to cool down after giving em a hard time, and the potential for heat to damage things. however on an APS kit i reckon there would be minimal impact from the heat. but as SICK SS sed, there is no belt slipping or breaking, the engine can be left as it came from the factory and there is no oil to be changed or serviced with the turbo itself.

[VKCOMMO]

turbo's and supercharges are both good. the supercharger drags off your engine which takes power, but its instant power, there is no lag, whereas turbo's are from your exhaust, you are throwing that out the back anyway, the downside is that the turbo will not kick in until the exhaust pressure has built up. so they are both good ideas. if you want instant power then go super, if you are willing to wait a second or so the turbo it up bro

[Jamesmaier]

ive been told the twin turbo allows for the no lag? not sure really, but i see it as rice boxes get turbos and the men get superchargers

[Sheany]

It depends on the setup and engine
In the Toyota Supra (High reving straight 6), at one stage, they were using a staged twin turbo setup, so one small turbo one big turbo, which allowed for boost right thru the rev range, from quite low. In this case on a v8, not reving quite so high, it'd be a waste to do such a setup.
For a V8, having two smaller turbo's wouldn't provide peaky top end power, but a more smooth power curve thru the rev range. With a single turbo, you'd be waiting for the turbo to spool, and then when it does, you know about it.
Stick with a blower (supercharger) on a v8, massive amounts of torque, thats what you need