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Location:
Sydney
Registered:
May 2002
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20 Valve Throttle Vacume Hoses
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Mon, 08 March 2004 04:33
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Need a little help from someone with a 20 Valve throttle Bodies
What are the vacume outlets on the top of 1 and 4
and the bottom af all throttles used for??
I think the one on the Top of number 1 is for the fuel preassure regulator, but i dont know what the others are ??
Thanks in Advance
Ben
AE86 Trueno 4AGE
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Club Member
Location:
sydney
Registered:
May 2002
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Re: 20 Valve Throttle Vacume Hoses
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Mon, 08 March 2004 07:48
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from memory the one running along the bottom goes to the MAP, you will be able to see it go to every throttle. cant say for sure about the others
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Location:
Sydney (Campbelltown...!)
Registered:
December 2003
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Re: 20 Valve Throttle Vacume Hoses
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Mon, 08 March 2004 08:02
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yah the bottom goes to map but dont know for sure about the top
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Location:
Sydney
Registered:
May 2002
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Re: 20 Valve Throttle Vacume Hoses
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Mon, 08 March 2004 23:44
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Thats what i thought but wasnt too sure.
FWIW the outlet on the top on Number 4 im prety sure its for the Brake Booster.
Ben
AE86 Trueno 4AGE.
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Location:
Newcastle
Registered:
May 2002
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Re: 20 Valve Throttle Vacume Hoses
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Tue, 09 March 2004 02:38
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Depends if it's black or silvertop. There are stacks of vacuum hoses all over the place on the throttle bodies. Don't forget about the one for the idle speed control valve, some go to charcoal canisters etc,etc. Luckily most of them can just be plugged up. The fuel pressure reg should already be connected up on the fuel rail unless someone unplugged it but from what I can remember off the top of my head it is near #1. Brake booster and ISCV are near #4.
Have fun.
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Location:
Sydney
Registered:
May 2002
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Re: 20 Valve Throttle Vacume Hoses
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Tue, 09 March 2004 03:28
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Well Seadog it is Neither A blacktop or Silvertop 20V 
Ben
AE86 Trueno 4AGE
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Location:
Newcastle
Registered:
May 2002
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Re: 20 Valve Throttle Vacume Hoses
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Tue, 09 March 2004 03:36
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Ok what are the throttles off? Silver tops used AFM Blacktops used MAP (but I'm sure you know this). Are you really going to use MAP on that motor? What cams are you using? And what ECU? Let me know how it goes. Looks the goods.
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Location:
Sydney
Registered:
May 2002
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Re: 20 Valve Throttle Vacume Hoses
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Tue, 09 March 2004 03:45
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All is i know is the throttles are of a 20Valve, i havnt measured the internal diamater yet, so i dont know whick version i have. I am not using MAP or AFM, but i am using an EMS Stinger Computer. Has 304 Degree cams and is currently being dynod so i should know by friday how much power.
I have blocked off all the vacume outlets i dont need already i was just checking thats what they were really used for.
Ben
AE86 Trueno 4AGE
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Club Member
Location:
sydney
Registered:
May 2002
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Re: 20 Valve Throttle Vacume Hoses
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Tue, 09 March 2004 05:45
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if what you think is the booster line, and its near the front of your engine, then it probhably is, think about how the engine would sit out of the car it came from and where the booster would be 
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Location:
Sydney (Campbelltown...!)
Registered:
December 2003
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Re: 20 Valve Throttle Vacume Hoses
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Tue, 09 March 2004 07:03
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the brake booster pipe is near the front its a fat pipe facing upwards.. all the pcv crap is at the back i just disconnected them all and ran a pipe from the breather and pcv outlet on the rocket cover to breather filters under the intake manifold
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