What is this part called ?? For 3SGTE ST185

[davidleonardi]

Can anybody tell me what's the name of this part ( attachment ) ?

I would like to buy 1 as the stock one is already not working. Please inform.

Thank a lot

[TurboRA28]

Looks like a turbo wastegate actuator?

Someone may correct me if I am wrong..

[thechuckster]

nearly - it's the TVIS actuator. It hides under the intake manifold and operates the butterflies in the short section between head and intake manifold.

You should be able to pinch one from a 3SGE motor of the same generation.

[IN 05 NT]

how do you know its not working?......have you checked it?

[sandman]

tvis mate....better to get plate made and leave off....

[mr2gze]

tvis mate....better to get plate made and leave off....

Why? and under what circumstances? Any dyno charts etc, to prove?

[sandman]

less restriction.... do high modified cars have them? good ol over engineered toyota....

[benjamin]

less restriction.... do high modified cars have them? good ol over engineered toyota....

That's a bit of a generalisation. Variable intake systems are proven to have an effect on power delivery and driveability. True, removing it won't have an effect on maximum output at high revs, but they do perform a function to improve power or torque at low to mid revs.

[sandman]

yes but if u change ur turbo comp and turb wheels it completely changes that, as does internal engine mods, i would believe they are designed by toyota and used for stock and yes street driveability, maybe overkill??? if ur chasin ponies most factory crap is unnecessary to change one thing is to change another.

[Fodder]

Some sources say it doesn't have any negative impact on power until well over 300HP, and does help at lower revs.

[sandman]

forced induction means exactly that.....just good ems and ur there

[The Last Streetfighter]

From the point of view of the 4age, the TVIS system was worse than the smallport system. BUT evey bit of evidence I have seen says the TVIS design with the TVIS bits missing was universally worse. Of course, when it came to FI that changed a bit.

[Cuts]

the worlds biggest automotive manufacturer (along with yamaha) know how to build engines and heads, i say make sure its working and leave it there.


One interesting thing people have experimented with is changing the switch over point to a bit earlier in the rev range.


arnt you using a 205 head on a 185 block though? and therefore there is no tvis on that head.

[Shifty]

i'm not sure how you know this part is not working if you don't know what it is...?

[davidleonardi]

i'm not sure how you know this part is not working if you don't know what it is...?

My technician tried to blow it, no pressure coming out. He said that it should blow out too. That's why he told me that this thing is not workin