wastegates and regulators

[steve-o]

was thinkin about putting an external on my ty and realize i have some options. been scoping out a tial 35mm, but would going to a larger (40, 46mm perhaps?) size be beneficial or a waste? what size would best suit my needs?

same thing with the springs that go inside of it. i can get a .95 bar spring then i can't adjust the boost limit lower than that right? so would there be any dissadvantage in having a really soft spring and have more adjustment to play with?

i plan on using a simple air regulating valve type controller to adjust the boost. i was told that it would be best to mount it in the engine compartment with the vacuum lines a short as poss. it would suck to stop and lift the hood everytime i wanted to adjust it. so what would be expected (in regards to boost control or whatever) if i opted for a cab mounted jobby?

which is better for the regulator and wastegate? a dual port vacuum line setup, or single port?

lastly and unrelated: will running the ultimate in "valet" save me gas? socal prices really suckin!

any input and all sugestions are welcome. thanks!

 

[smeagol]

no, yes, no, no yes

up up down down left right left right a b start


go with as big a spring as you can - up to the lowest boost you'd run - if you want to run 22psi, control will suck if you are running a 5 to 10psi base setup.

regulator control will work ok on an external; i'd set it up in dual port mode. do some searching, we covered this pretty extensively just recently.

valet will not get you better mileage.

 

[InvisiBill]

Someone posted a link to an off-brand "Boost Valve" that has a remote adjuster. The actual valve is in the engine bay, and there's a knob in the cab to turn to adjust it...

 

[nborton]

=( contra

=( contra

up down up down left right left right b a start,


totally worthless post sorry.

 

[MotorMouth]

Re: =( contra

Re: =( contra

up down up down left right left right b a start,


totally worthless post sorry.

I know why it is worthless!!

It is supposed to be: up down up down b a "select" start!

Now it should help :wink:


(I just realized I am a geek for rembering that :roll: )

 

[MerF]

I recently finally go tthings right in the external set-up on the Supra. It has a .5 bar spring in it (Innovative Progate) and despite having an EBC that is raved about it's great control, when I get up around 15-18 PSI, it tends to oscillate very badly. That's barely over stock boost levels (though it's much more air thanks to large single instead of small twins). Anyway, I would never run the car on the rediculously low boost that the spring is at, so basically I agree that you need to get a spring that is as strong as the lowest levels you would want to run for control.

Oh yeah, and dual port set-up if you have a good source in the charge pipng/compressor side of turbo to tap from, single port if you are using manifold pressures.