supercharger on/off?

[PSYKO PHOENIX]

guts a quick question

can you rig a super charger so you can turn it off and on?

or do you just use a boost controler to control how much boost your on (ie to save gas set it to a low boost, and to go fast use i high boost) - basicly the same as turning it off or on?

[woteva]

can you rig a super charger so you can turn it off and on?

Have you just finished watching Mad Max ??

[PSYKO PHOENIX]

hahahaha na, a friend said it was possible, i just wanted to make sure lol

[DannyboyDS]

yes it is, that is infact how the SC14 works, do a search on SC14 about 10 million threads.

They work allot like a or exactly like an air conditioner clutch (Electronic)

[PSYKO PHOENIX]

i found this

The SC14 Supercharger Thread

and this

http://www.rodshop.com.au/superchargerholdv6.htm

figurd id post it up so if any one was in the same boat as me they wont have to search to far :-)

[SweetWagon]

guts a quick question

can you rig a super charger so you can turn it off and on?

or do you just use a boost controler to control how much boost your on (ie to save gas set it to a low boost, and to go fast use i high boost) - basicly the same as turning it off or on?

yes it is, that is infact how the SC14 works, do a search on SC14 about 10 million threads.

They work allot like a or exactly like an air conditioner clutch (Electronic)

As stated, Sc14 and the like have a clutch to engage and disengage the supercharger.. nothing aftermarket is available to adapt to any other superchargers to my knowledge.

And the only way to adjust the boost generated on a supercharger is by changing the pulley on the front, the smaller the diameter of the pulley the higher boost pressure generated.

[PSYKO PHOENIX]

sweet, another dumb question, is the amount of boost form a supercharger more powerfull than a turbo? i know they both run in psi, what i mean is say a supercharger is running 10psi is that equivilent to 15 psi from a turbo, or am i just being a moron

one of my mates keeps craping on about how his subaru is rinning 20psi, my commodore is already close to his amount of horsepower and its naturaly asperated, im obviously not gunna need a lot of boost but im just curious weather the 2 types of boost (supercharged and turbo) have any differance in the psi generated


and before you tell me i allready know that turbos have to spool up creating turbo lag etc and that superchargers are run off the crank shaft and so have no spool time, making them better allround

sorry to be a dumb a$$

[stocky]

how does a v6 n/a have similar power to a 20 psi subaru? turbos are a more efficient form of power compared to superchargers

[PSYKO PHOENIX]

how does a v6 n/a have similar power to a 20 psi subaru? turbos are a more efficient form of power compared to superchargers

not quite sure, i havent seen the amount of boost hes runing, he wont let me, he CLAIMS its 20psi but its a stock turbo, i doubt its that high

all i can tell you is that my commy has no problem keeping up/passin his 4 cylinder ass,

and hes not the kinda guy to go easy on the gas

[HARVZ-6]

his must be f*cked lol

a supercharger will give you constant power soon as you want if right from idle..

turbo needs so many revs to produce the exhaust pressure to spin the turbine and the load on the motor to hit full boost

[immortality]

his must be f*cked lol

a supercharger will give you constant power soon as you want if right from idle..

turbo needs so many revs to produce the exhaust pressure to spin the turbine and the load on the motor to hit full boost

right and wrong. a PD (positive displacement) blower will give a almost consistent boost pressure from low rpm as in the L67 setup. a centrifugal style blower will build boost with rpm i.e. it starts makingboost at say about 2500rpm and is making 10psi at about 5500rpm. i.e a raptor style blowers. blowers drive of the crank and obviously require engine power to create boost. turbos on the other hand make free power because they use the spent exhaust gasses. where and when a turbo boosts has to do with the the turbo used i.e. the the size of the turbine and exhaust housings. a properly spec'd turbo will produce boost with very little lag.

to change the boost on a supercharger you need to chagne pullies as mentioned above, with a turbo all you need a boost controller.......

turbo setups are a lot more involved then superchargers............

i honestly wouldn't bother with a sc14 setup. they are in-efficient and if you want more then the standard 3psi you get on a 3.8 V6 you loose the abilitity to swith it on/off mad max styles. 3psi is really stuff all boost anyways

[PSYKO PHOENIX]

right and wrong. a PD (positive displacement) blower will give a almost consistent boost pressure from low rpm as in the L67 setup. a centrifugal style blower will build boost with rpm i.e. it starts makingboost at say about 2500rpm and is making 10psi at about 5500rpm. i.e a raptor style blowers. blowers drive of the crank and obviously require engine power to create boost. turbos on the other hand make free power because they use the spent exhaust gasses. where and when a turbo boosts has to do with the the turbo used i.e. the the size of the turbine and exhaust housings. a properly spec'd turbo will produce boost with very little lag.

to change the boost on a supercharger you need to chagne pullies as mentioned above, with a turbo all you need a boost controller.......

turbo setups are a lot more involved then superchargers............

i honestly wouldn't bother with a sc14 setup. they are in-efficient and if you want more then the standard 3psi you get on a 3.8 V6 you loose the abilitity to swith it on/off mad max styles. 3psi is really stuff all boost anyways

now thats what i was lookin 4!!!! i p!ss harder than 3psi so i definatly wont be getting one of those! is the sc14 the only one with an on off switch? can a clutch be built onto any supercharger?

the reason i want an on off is because i dont want to be running boost all the time, only when i need it

thanks for all your input and help

[sle turbo]

guts a quick question

can you rig a super charger so you can turn it off and on?

or do you just use a boost controler to control how much boost your on (ie to save gas set it to a low boost, and to go fast use i high boost) - basicly the same as turning it off or on?

use a toyota 4agze supercharger they have electronic clutches

[sle turbo]

sweet, another dumb question, is the amount of boost form a supercharger more powerfull than a turbo? i know they both run in psi, what i mean is say a supercharger is running 10psi is that equivilent to 15 psi from a turbo, or am i just being a moron

one of my mates keeps craping on about how his subaru is rinning 20psi, my commodore is already close to his amount of horsepower and its naturaly asperated, im obviously not gunna need a lot of boost but im just curious weather the 2 types of boost (supercharged and turbo) have any differance in the psi generated


and before you tell me i allready know that turbos have to spool up creating turbo lag etc and that superchargers are run off the crank shaft and so have no spool time, making them better allround

sorry to be a dumb a$$

buddy a super charger works on rpm where as a turbo works on load but it depends on the flow rate that creates power what flows more pouring water down a 20 mm pipe or dowm a 70 mm pipe

[soop]

What Subaru does he own?

A WRX fitted with a Vf34 could push 20psi. But its running out of its efficiency range at around 18psi.

Even still, an Ej20-t GC8 WRX fitted with a Vf34 running 18psi would be making around 170-190kw@aw. That combined with a 4.11 final drive, I REALLY doubt you're keeping up with it at anything under the speedlimit.

[immortality]

now thats what i was lookin 4!!!! i p!ss harder than 3psi so i definatly wont be getting one of those! is the sc14 the only one with an on off switch? can a clutch be built onto any supercharger?

the reason i want an on off is because i dont want to be running boost all the time, only when i need it

thanks for all your input and help

the SC14 aka 4agze is hte only one that can be switched on/off

with a raptor style centrifugal charger it won't start to boost until about 2500rpm so unless you have 4.11:1 ratio diff fitted you won't ever be cruising with it wanting to boost. raptor setups are returning fuel economy figures that are almost as good as factory quoted figures...... thats good enough for me..........

[radarak47]

There are setups in the states that run Centrifugal blowers with pulleys at near max efficiency then a wastegate between the blower and TB to limit the max boost in the manifold.

Lots of pros and cons to this type of setup but if you want adjustable boost on this style of SC it is possible (just expensive, with a lot of trial and error to get it right.).

Pros:

you can run less boost on the street and then up the boost for that tyre frying run.

Boost will always come on lower in the revs i.e. 1500 rpm and max boost (achieved by the wastegate setting) will be acheived through mid range instead of peak rpm.

Cons:

Lot more heat generated from the blower (so intercooling is a must)

More parasitic loss from the blower as it is working harder all of the time, even with manifold boost limited by the wastegate.

Setting up the MAF after the wastegate or have to have a plumb back wastegate otherwise metored air from the MAF will read wrong causing motor to run too rich or lean. Only other option is an aftermarket computer with MAFless tune.

[PSYKO PHOENIX]

What Subaru does he own?

A WRX fitted with a Vf34 could push 20psi. But its running out of its efficiency range at around 18psi.

Even still, an Ej20-t GC8 WRX fitted with a Vf34 running 18psi would be making around 170-190kw@aw. That combined with a 4.11 final drive, I REALLY doubt you're keeping up with it at anything under the speedlimit.

who said anything about a speed limit, lol

[v8_stato]

have a look at sta chargers mate,my mate had one that has an on/off switch in his vs wagon.