Supercharging

[MissDrew]

I have the chance to buy a blower that has an electric clutch on it (can turn blower on or off) what are your thoughts on running it and a turbo?

Yes I do hate my little 2.8 :evil:

[hypo]

sell me the turbo and all that goes with it and u buy the charger and put that on ya lux

but i think putting both on wood really grenade the motor if not setup up right

[killalux]

if it was set up so the supercharger cuts out just as the turbo starts boosting i think it would work really well.

or you could just sell the supercharger to me

[RUFF]

So how are you going to run these If its running the turbo first and then into the supercharger i think it will case the turbo to be ineficiant while the charger is switched off as it will have to turn the charger to creat airflow and if its running the supercharger into the turbo it will make the supercharger cause airflow probs into the turbo.


Ive had no experiance with this so im not sure, If anyone has any ideas on this that make it sound like it will work i would be interested.

[MissDrew]

Gezzzzzz Ruff I thought you`d know about this, good to see I can stump you sometimes

As most of you know I know nothing about motors and this is why I have asked this question so anybody that has some input please post away.

[RUFF]

I have heard of the set up being run but not with the toyota clutch driven supercharger. I have never seen it though to know how the intake was set up.

[MissDrew]

I have heard of the set up being run but not with the toyota clutch driven supercharger. I have never seen it though to know how the intake was set up.

Well you`re no good to me then

So fark off

[cplux]

Guts having the same charger i think you are talking about, i would be very careful if going to do this setup. on my petrol hilux if i didnt install bypass valves the sc would start boosting even with clutch off due to engine suction and my motor would just rev out of control. using a combo like you are talking about could cause the same results on your diesel depending how its set up. is it an sc 12 or sc 14 charger??

[cplux]

personally i'd go the sc and smaller sc pulley on a diesel and ditch the turbo.

[MissDrew]

Don`t know what type of charge it is, but it is the one off my mates 2lt petrol. He has only pulled it off because he is selling his green lux soon.

I`m only throwing ideas around atm.

[bj on roids]

in your situation it would not work guts.

Although if you paid a shop they could probably set it up for you.

I remember having some photos from my dad of a supercharged turbo charged detroit motor (diesel for a boat)

Its a good way to make your reliable setup very irritating and problematic.

I would personally recommend against it. One or the other.

[suprasurf]

I remember the days of the Lancia Delta S4 which was turbo'd and supercharged

Do a search on it and you may get some answers to the turbo + supercharger


Heres some Lancia info for those interested:

As I know, it was the only car ever employed turbocharger and supercharger simultaneously.

Turbocharger is generally regarded as the most efficient means of forced induction, but it requires higher rev (hence a lot of exhaust gas) to operate. The result is poor low-speed power and the presense of turbo lag.

On the contrary, supercharger performs strongly and instantly right from idle, but it is rather inefficient in high rpm.

For a rally car, a flat torque curve over a wide range of rpm is always very crucial, since rally car has to brake to very slow in tight corners and then accelerate to near top speed in 10 seconds. Therefore Lancia spent a lot money with Abarth to develop a system combining both turbocharger and supercharger to get a perfect output.

It employed twin intercoolers, one for the turbo and one for the supercharger. The supercharger worked at low speed. Once the turbo cut in, a bypass valve relieved the pressure from the supercharger so that energy efficiency was be lifted.

This system was not only complex, but also faced great difficulties during development. The biggest problem was the transition between supercharging and turbocharging, since a short zero-boost period existed. However, after further developement, this problem was eventually solved.

As a result, the 1.8-litre engined rally car had at least 470 hp and 333 lbft.

[MissDrew]

Like I`ve posted before ATM its only an idea.

Might just end up talking the wife into letting me sell the 2.8 and turbo and putting an injected 5lt in it

[NICK]

wont work, looked into, you use the charger to bring the turbo onto boost sooner, the charger then staves the turbo of oxygen. In a diesel, eg boats and BIG diesel motors they use the turbo to bring the s/c on to boost. You will have all kindas a problems getting the air fuel right, i even thought of regulation of air with hob switches and one way valves. In the end i got lazy and refused to spend anymore money on the POS, it then went to ruff performance for a working over and it is 100% better.

So yeah turf the idea and put the money into LPG, or get one of those snake-racing supercharger kits that were apparantly available 2 weeks after TTC last yeah, although i havent heard anymore on that.


NICK

[CRUSHU]

being such a small blower, at the most off a toyota 2l, maybe even a 1.6L, it would only make a small amount of boost, but would make it very early, and using a hobbs switch, you could make it turn off at 5 psi, (if it make that much boost) and you wont have any trouble with the rotors freewheeling in the inlet path, that is how they work, otherwise they wouldnt have a clutch, but my brother has broken a blower belt in his vn group a commodore, and it didn't go any worse than when it was n/a. if it is efi with a closed loop system, you wont have any trouble with the mixtures, as it will compensate for it, only probs being timing. you would have to have the static timing set low, with not much curve in the advance.

[Hirunner]

I work for volvo trucks australia.There is a truck that we work on called an FL6 250hp this runs a super charger and a turbo.It runs a flap inbetween the two.So you have your supercharger till 1500rpm the flap is shutting off the turbo.The clutch cuts out at 1500rpm the flap closes and it lets the turbo take over.Works very well but may take alot of room under the bonnet.

[bj on roids]

wont work, looked into, you use the charger to bring the turbo onto boost sooner, the charger then staves the turbo of oxygen. In a diesel, eg boats and BIG diesel motors they use the turbo to bring the s/c on to boost. You will have all kindas a problems getting the air fuel right, i even thought of regulation of air with hob switches and one way valves. In the end i got lazy and refused to spend anymore money on the POS, it then went to ruff performance for a working over and it is 100% better.

So yeah turf the idea and put the money into LPG, or get one of those snake-racing supercharger kits that were apparantly available 2 weeks after TTC last yeah, although i havent heard anymore on that.


NICK

ROFL

also the big diesels i have seen all cut one or the other off and most of them were on the earlier two strokes, not a smooth running 4 stroke like a car. Plus such a small motor, and I dont think it would handle it, the cranks in them are weak as.

Anyways, injected 5 ltr, is also way old technology

[suprasurf]

Anyways, injected 5 ltr, is also way old technology

And wot would you recommend as a suitable power plant eh 8)

Don't open you mouth without evidence !!! we are still waiting for pics and details !!

[bj on roids]

Anyways, injected 5 ltr, is also way old technology

And wot would you recommend as a suitable power plant eh 8)

Don't open you mouth without evidence !!! we are still waiting for pics and details !!

oh yeah whoops

gimme another 6 months

[kiwilux]

For what its worth,
we run a Toyota MR2 (1600) 4AGZE Supercharger on our competion truck, Rover 3.5 litre V8, overdriven by about 25% from memory, running dedicated LPG through a throttle body (sideaffect : LPG helps cool the blower and air charge)

Does it go alright ?
hell yeah!!!!, makes a huge difference to the performance,low boost too, only about 4 or 5 psi

Pick up down low is ORSUM !!!

Mike