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Location:
Brisbane
Registered:
April 2003
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Location:
Brisbane
Registered:
February 2003
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Thu, 01 May 2003 13:21
 
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i m currently trying to put a blower from a soarer onto a 18rgeu engine that i have. found a charger for $400 from imports but am after a vacuum operated bypass valve. as the charger has a electromagnetic clutch i m hoping to have 2 modes for running with charger and without charger (flick of switch.) i m hoping to do most of conversion myself and i think most of cost will be in piping, intercooler, charger and getting it on a dyno. let me know if you find out anything yourself. (do you know where to get a bypass valve)
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Thu, 01 May 2003 13:45
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i have also considered this as one of my options. And i would like to ask a quesiton or two.
Please excuse any stupidity i might display.
- What is the vacuum bypass valve required for?
- Are you going to continue to use the standard computer?
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Location:
Northwestern Sydney
Registered:
August 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Thu, 01 May 2003 14:03
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Witzl,
You still after an ECU? 
From what I've found out about the subject:
The air bypass valve (ABV) serves two functions. The first is to provide a route for air to bypass the supercharger when it is not spinning. The second is to act as a blow-off valve when boost exceeds aproximatly 8 PSI.
I beleve the air bypass valve is either run from the ECU or from the vacuum hoses (after fiddling with connections)
the vacuum bypass valve has somthing to do with running the air bypass valve.
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Location:
Brisbane
Registered:
April 2003
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Thu, 01 May 2003 23:09
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I will be running and aftermarket ecu (more room to move for future upgrades) but apart from that I have a lot of research to do... will let you know what I come up with.
Cheers
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Location:
Brisbane
Registered:
February 2003
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Fri, 02 May 2003 01:56
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i have an autronic comp for the engine with a magna dizzy so i can have sequential firing on the injectors. i m going to run the standard 8.3 com and 7psi boost. i want the bypass valve as it goes around the charger when it is off. vacuum operated so that when the charger isn't forcing air into the engine, the opposite is happening (engine pulling air in) causing a vacuum and opening the valve so the engine will suck air around the charger insted of through it.
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Location:
adelaide
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Sun, 04 May 2003 12:25
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This is the setup i plan to put together sometime in the not-too-distant future, once ive rebuilt the motor and got a bit of money for a decent computer.. I too am interested in the Bypass-valve system, as it would be very handy to be able to control when the s/charger is active, other than just unhooking the pulley belt.. As this would aide in keeping engine temps down, as you could leave it off when just town driving etc.. and turn it on for cold nights cruising hehe and the odd street lineup..
I would love to hear more and as much info as possible on this topic, quite interested in the particulars of using a toyota GZE sc12/14 blower, using a bypass valve setup etc...
Thanks
Guy
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Mon, 05 May 2003 13:57
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If im not mistaken (i havnt seen one, only what ive read), the SC14 does have a solenoid clutch and a electronic bypass valve built in.
Turning on/off the SC would be easy.
When in use, engage the clutch, close the bypass.
When not in use, disengage the clutch, open the bypass.
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Location:
Adelaide
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Tue, 06 May 2003 05:45
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I ahve been looking into this too, but I would be using the sc12 off of the 4agze as I am putting it on a 2tg....
but my understanding is....
electromagnetic clutch gets power, and then turns the fin/rotors, whatever you want to call them inside... and produces boost.....
turn off the power to the electromagnetic clutch and then the pulley on the front will still turn with the engine but wont be locked to the fins/rotors on the inside, therefore not producing boost.....
as for this bypass valve or whatever... I have been told that you will still be able to drive the car, when the s/c is off as the fins/rotors have enough "freeplay" in them that they will still spin loosely inside the supercharger, still allowing the engine to then "suck" the air through the s/c....
then as said above, give it power, clutches engage and then you get boost....
I am just goin on what I have been told by a few reputable mechanics here i Adelaide...
haven't tried it yet, but will.
Brendon
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Tue, 06 May 2003 07:38
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| Snyper wrote on Tue, 06 May 2003 15:15 |
then as said above, give it power, clutches engage and then you get boost....
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Just make sure you dont switch on the SC using the clutch while the engine is at anything except idle.
Doing so will wear out the clutch real quick.
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Location:
Adelaide
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Tue, 06 May 2003 07:48
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but isn't it bad for the s/c to be on while idle??
wouldn't you want it to switch on the minute you get off idle ?
The computer I have has an aux output wire to switch something on at either a certain MAP, a certain RPM speed, or even a certain TPS setting.... so my plan was to have it switch on at say a certain MAP so I can drive off boost and then when you floor it the clutch angages and gets boost...
but yeah that is a good point you have there....
Brendon
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Wed, 07 May 2003 04:09
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| Snyper wrote on Tue, 06 May 2003 17:18 |
but isn't it bad for the s/c to be on while idle??
wouldn't you want it to switch on the minute you get off idle?
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I wonder if its bad for the SC itself.. or just bad for idle quality and fuel economy.
Either way, i guess the best setup would be to have it turn on at the slightest throttle touch, and turn off say after 5sec of no throttle.
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Location:
Adelaide
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Wed, 07 May 2003 08:33
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wouldn't you want it to turn of the minute the throttle closes?!?!
cos if you had it still boosting 5 seconds after throttle is closed then it would be boosting while deceleration....
like I said, might just wire it up to come on at certain rpm or TPS setting.
Brendon
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: sc14 supercharger onto a 18rgeu... has anyone done this conversion?
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Thu, 08 May 2003 07:24
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| Snyper wrote on Wed, 07 May 2003 18:03 |
wouldn't you want it to turn of the minute the throttle closes?!?!
cos if you had it still boosting 5 seconds after throttle is closed then it would be boosting while deceleration....
like I said, might just wire it up to come on at certain rpm or TPS setting.
Brendon
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If you did that, the SC clutch would be disengaging during gear changes... well unless you flat shift 
I dont think turning the SC on and off so often would be too good for it.
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