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Location:
_Sydney _
Registered:
May 2002
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 1jz wastegate acurator
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Tue, 17 September 2002 09:03
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Can some one pls tell me or show a pic of the wastegate acurator, I have an idea which one it is I just wana make sure I got the right one. Thanks
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Registered:
June 2002
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Re: 1jz wastegate acurator
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Tue, 17 September 2002 21:35
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There are two of them. One on each turbo.
Follow a hose from the compressor housing (just below outlet pipe)to the actuator. Same on both turbos.
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Location:
_Sydney _
Registered:
May 2002
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Re: 1jz wastegate acurator
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Wed, 18 September 2002 07:06
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Ok cool so I got the right one, I got a electronic boost controler i
wana hook up, and i gota connect it to the waste gate accurator line
since i got 2 turbos do i hookit it off one or do a "T" conection off both somehow????
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Location:
Wollongong
Registered:
May 2002
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Re: 1jz wastegate acurator
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Wed, 18 September 2002 07:15
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You'll need to hook it into both turbos...
You basically need to join both compressor sides together with a T piece and hoses, then join both wastegate actuators with another T piece and hoses. Then, with the 2 remaining ends of the T pieces is where you'll hook the boost controller into.
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Location:
_Sydney _
Registered:
May 2002
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Re: 1jz wastegate acurator
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Wed, 18 September 2002 07:21
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AHHH Clear as mud!  Now I just gota get some T pieces n some hoses etc etc. Got my weekend planned Thanks heaps!
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Location:
Wollongong
Registered:
May 2002
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Re: 1jz wastegate acurator
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Thu, 19 September 2002 01:34
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This is getting to be a common question around here with twin turbo cars... I'll speak to Nark/Max about writing an article with some nice pics on how to do it for future reference.
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Location:
_Sydney _
Registered:
May 2002
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Re: 1jz wastegate acurator
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Sat, 28 September 2002 06:54
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Ok a lil help needed here, i got all my pipes and T connectors n that everything is ready to go. BUT how the heck do you get to the back wastegate acurator line?!?!? i cant fit my hand down there or anything  can some 1 give us a few tips here. thanks!!
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Registered:
May 2002
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Re: 1jz wastegate acurator
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Sun, 29 September 2002 00:46
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One end of this small rear hose is more accessable than the other(the other is near impossible , in situ).From memory,I pulled the hose off the actuator end,not the compressor outlet nipple.When the rubber is warm,either yank it off hard,or use pliers to loosen and wriggle it free.Leave the other end attached
to the compressor outlet.Use a joiner to join more hose to this short bit of hose,to extend it to your boost control solenoid.Now take another length of hose and put a clamp on it loosely.Then grasp this hose between thumb and finger,and push it down vertically onto the actuator nipple.Note that at this point your hand will be jammed between firewall and turbo plumbing.Once you have it on(after 2-3 goes!!  ) slide the clamp into position and secure.
The hose you have just installed should be connected at the other end to theother actuator nipple.Half way along this length,a tee piece should be installed to go to the correct nipple on the boost control solenoid.Likewise,the 2 compressor oulets should be joined also,with a tee half way between them,going to the solenoid.
Pay attention to the following...Correct wastegate selection on boost controller unit(internal v.external w/gate),clamping of all joins to avoid pipes blowing off under boost(turbos will spike to 19psi if you have no boost cut and a pipe blows off)
correct plumbing (ie 'actuator to actuator'/'outlet to outlet'/actuators and oulets connected to correct respective nipple on the boost controller solenoid)If you get any of these "plumbings" around the wrong way you will have standard boost,regardless of what you do with the boost control knob.
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Location:
_Sydney _
Registered:
May 2002
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Re: 1jz wastegate acurator
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Sun, 29 September 2002 08:20
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Thanks for the tip Ill give it a go.
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Toymods Board Member
Location:
Sydney
Registered:
May 2002
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Re: 1jz wastegate acurator
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Sun, 29 September 2002 13:42
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| Soarer wrote on Thu, 19 September 2002 11:34 |
This is getting to be a common question around here with twin turbo cars... I'll speak to Nark/Max about writing an article with some nice pics on how to do it for future reference.
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no need to ask permission... write one up and email it...
more articles always welcome
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Location:
Forrestfield, WA
Registered:
August 2002
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Re: 1jz wastegate acurator
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Mon, 30 September 2002 05:58
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Does the piping from the wastegate actuators ever fail or perish?
reason i ask is i recently hooked up a apexi s-afc which reads off the MAP sensor.. according to it ive reached 12.94 psi on a short 0-90kph stint and my foot wasnt only 95% of the way down according to the s-afc...
The car has no controller or anything, just pod filter and aftermarket exhaust.
Is this bad? 
- Russ
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Location:
Adelaide, SA
Registered:
May 2002
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Re: 1jz wastegate acurator
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Mon, 30 September 2002 09:23
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I've only had boost gauge (mechanical) on my 1j for a month or two, but in the cold weather it will go to 12 psi. Exhaust changes will give you higher boost and the twins on the 1j reach max boost really fast so it doesn't seem too unusual to me.
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Location:
_Sydney _
Registered:
May 2002
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Re: 1jz wastegate acurator
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Mon, 30 September 2002 09:34
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yeah ive seen my boost guage go a lil higher than 10psi once or twice and its stock as a rock
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Location:
Forrestfield, WA
Registered:
August 2002
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Re: 1jz wastegate acurator
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Mon, 30 September 2002 09:51
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 thats a relief.. ive only just hooked up the MAP sensor to the AFC so i was worried ive been running it with such high boost for so long..
I always let it cool down for 2-3mins after normal drive or up to 10 mins after a cruise (.. spirited driving and all that ) so yeah touch wood nothing breaks.. and no need for a boost controller i guess
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Location:
Sydney
Registered:
May 2002
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Re: 1jz wastegate acurator
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Mon, 30 September 2002 11:05
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FMIC, free flowing intake and exhaust and twin dump pipes and boost will reach 14 psi without any boost mods
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Location:
Wollongong
Registered:
May 2002
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Re: 1jz wastegate acurator
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Mon, 30 September 2002 12:01
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Mine hits 12psi all the time... only mod at the moment is a twin 3 inch exhaust from turbos to the rear.
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I supported Toymods
Location:
Perth WA
Registered:
May 2002
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Re: 1jz wastegate acurator
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Mon, 30 September 2002 13:23
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Poombah - You have to be a little wary taking the AFC's reading from the factory MAP sensor as a "true" pressure. All that is happening is the AFC takes the voltage and converts it to a "pressure" number. The AFC is a generic device that has not been calibrated specifically with the Toyota MAP sensor which may have non-linear characteristics.
I have the AFC also reading off the factory MAP, and a AVC-R with it's own sensor. Not suprisingly there is a minor differnce that can be up to 0.05 bar. I actually don't trust either to give me a true reading, but use them to make sure that everything remains consistent.
Also - yes the factory rubber lines do perish after the 10+ years of underbonnet heat. They can crack and lead to boost leaks that reflect in under-reading boost.
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