Gtm Supercharger Or S/turbo?

[mitch28]

If you guys wanted to force induct your v's would you go supercharger or turbo charger if you were not gonna forge the motor and why ??

[Vthirty5]

I did heaps of research on this topic as I was keen on doing it, went in to a couple workshops and discussed everything. Seems either can be done, but its a give or take (someone with experience can hopefully chime in) as the VQ's werent built for FI. I would go S/C on stock internals and T/C on forged internals.From what Ive seen though, 400rwhp is really pushing it on stock rods (once again someone with experience can hopefully confirm this) Really depends how deep your pockets are and how far you want to push it. My opinion is S/C. But both can be done.

[mitch28]

I have mixed responses from some local garages.half say turbo it half say supercharger would be better. I've been on Google for the past 3 weeks trying to see which one is better for me send its still 50/50. I'm leading towards s/charger. But it's a tough choice. I've been thinking the Gtm stage one s/charger. But they also have a turbo kit for around the same price. I've had turbo before I know what to expect. But on the brighter side either one of these is going to happen in next month

[iamhe77]

If built or stock engine, I'd personally go with one of the new GTM S/C kits. The one with the S/C our driver's side of the engine. Lovely and logical setup.

Easiy to wind the boost up on a built engine to - just use a smaller pulley

[SMOKEYV35]

g35driver.com

those guys have much more experience with this kind of stuff.

but if i had to make a decision off the cuff, I'd go supercharger.

S/C PROS:

a) they sound sick

b) in a heavy car like the V-series, bottom end torque to get the party started is key - s/c has this in spades, turbo does not.

c) easier to bolt on/bolt off. If you get done for emissions, or if you need to sell the car - you can part out within a day. Turbo you've got to deal with manifolds, loads of plumbing etc.

d) from what i've seen, the kits avail are bolt on with a piggyback ECU in most cases. No expensive standalone management required - turbo might require this to get the most out of it.

S/C CONS:

a) the noise isn't for everyone - if you do long distances or have nagging missus, the constant 'jet whine' might get old after a few hours on the freeway.

b) Engine drag - steer clear of the top mounted screw type chargers - they don't fit without a bonnet, and the drag created for the power delivered is pretty dismal - thinking the Stillen for example. Pro-charger style much more efficient and look neater.

c) Not as stealthy - pro-charger tucked behind the headlight looks nice especially if painted black- but still never going to be as 'hidden' as a low mounted turbo. Your piping setup will make or brake though. I like stealthy setups, not flashy ones.

There is a s/c setup on zclub.com.au for about 3k which is very cheap - but does not come with management. Could be a good start though? Otherwise I've seen US built kits start around the 6k mark minus shipping and taxes, and the HKS one is around a 8k start.

Anyway - thats a start !

[t5iv]

Thinking SC simply because of the extra torque through the rev range. My thinking is that a stock motor would be able to handle that better as opposed to the 'sudden' surge of boost from a turbo.

[SMOKEYV35]

Also, supercharged you can upgrade the exhaust system built for an N/A - bolt it on and get gains for the supercharger - but if you ever remove the s/c you can still keep the exhaust in place.

Where as turbo, you'd have to get a custom system made at least up to the cat's. Remove the turbo, and that all has to come off with it.

Just a small thing - but take it from a guy who has had to remove a turbo system from an n/a motor TWICE to get it through EPA. Not fun.

[mitch28]

Thanks for the input guys. Been living in G35 driver. I'm now in between vortech and Gtm. I've been quoted 10g for a vortech system drive away. Waiting to hear back on someone else about the Gtm .

[SMOKEYV35]

10k ouch.

wonder what an LSX conversion would cost........slightly O/T.

[Seano350GT]

Mitch there's a guy in the states selling a Procharger kit for $2100 tried tagging you but i can't on my iPhone search for Ben Nguyen's post

[iamhe77]

Thanks for the input guys. Been living in G35 driver. I'm now in between vortech and Gtm. I've been quoted 10g for a vortech system drive away. Waiting to hear back on someone else about the Gtm .

Two very different units. The GTM uses a highly efficient Rotrex unit which is much quieter than the Vortech/Procharger. Also a much nicer install IMO

[30Five]

before you make your mind up, Check out Soho Motorsports Turbo kit, quality stuff!

10k ouch.

wonder what an LSX conversion would cost........slightly O/T.

Alot lol, in the process of this conversion, so far spent 9k including engine & gearbox. still have alot more to spend.

[mitch28]

Cheers seano. I did see that. I'm looking into the parts it needs now.

[Seano350GT]

Alright mate, just make sure you do exercise caution if you are going to go ahead with it. Considering he is a private seller across the other side of the world, you'd wanna hope it comes with everything he says it does.

[spartacus77]

my auto v35 with hks turbo kit made more hp at lower boost than the vortech s/c kit did on an auto 350z. like 25kw more at 1.5psi less

use uprev osiris to retune stock ecu as it will save $$$ or go haltech or MEGASQUIRT ECU if you want a/m. pm if you want any more info. i prefer turbo but maybe thats coz i got one

[spartacus77]

its a skyline ffs go turbo you wont be disappointed use waste to make power so to speak

[Deep Dish V35]

regarding the supercharger sound, you can always upgrade to an electronic clutch pulley so that the s/c can be turned off...

i had this setup on a previous car, with the SC constantly running i got 250km from a tank of petrol, with it switched off i got 400km. it also had an automatic setting with a vacuum operated switch that would automatically engage the the SC when the sensor detected a certain level of vacuum (or acceleration load) within the inlet manifold.

So at the switch on my dash, i could leave the SC and its noise on all the time.... turn the SC off to save fuel and kill the noise it made.... or have it kick in automatically .

i love SCs