ok so.... (wastegate q)

[Guest]

what makes an external diffrent!?

[title edit]

[Guest]

an external what? different from what?

-smurff

[Koom]

 jasonv6 said:

what makes an external diffrent!?

Cause its illegal unless you plumb it back into the exhaust.

Why don't you just cut the whole exhaust off?

[nztintin]

and external sticks out, an internal goes in.....

(I'm talking bout bellybuttons, what are you talking about?)

[Guest]

few threads to read about wastegates and screamers, you will also note an interesting tone in the screamer threads.

search is also a good thing to use

http://www.clubsub.org.nz/forum/index.php/topic,15150.0.html

http://www.clubsub.org.nz/forum/index.php/topic,2822.0.html

http://www.clubsub.org.nz/forum/index.php/topic,313.0.html

http://www.clubsub.org.nz/forum/index.php/topic,9309.0.html

http://www.clubsub.org.nz/forum/index.php/topic,9759.0.html

-smurff

[wrx_lou]

Bein a real hardass today eh Paul?

To sum up internal is fitted to the turbo. if you look at the exhaust side of a turbo you will see a little flap. The flap vents into the factory downpipe.

An external is fitted before the turbo and should be vented into the downpipe after the turbo.

External

Internal (notice the flap on the right.

[Guest]

hehehe, kinda wrx_lou, there is multiple treads about it. so thought adding the already written experience of other would help the user more than a new thread of the same stuff yet again

-smurff

[wrx_lou]

Na sweet, thats what mods are for. Anything to stop another thread turning shit side up too.

[Koom]

 wrx_lou said:

External

But that one has both ???

And they should be vented out under the sill in front of the rear wheel right next to the open pipe for an exhaust, but thats never going to make it through a wof.

[wrx_lou]

Ok, so it has both? It still clearly shows what I described and most likely what OP's would appear to look like if he did it unless he swapped out the turbo.

Had the question been related to fitment of and not the difference between then it may of been mentioned that the setup in the pic would of had the flap welded shut.

[Koom]

Don't take me too seriously ;D I'm just here taking the piss out of yet another idiotic external wastegate thread.

He already knows how they are set up r.e.

 jasonv6 said:

no its a pipe stright off the back of the turbo makeing that waste gate sound

its iilegal till i ge a warrent or the coppas catch me lol

[wrx_lou]

lol sorry, I didnt see the winking face on the orignal post. my bad, carry on

[Guest S T E Y E]

u dont need to weld the internam shut...if u discoonect vacuum hose from it it stays shut...the spring holds it shut...welding is stupid not only warps it if u weld the flap and if u tac the swivel on the outside u just made it so u cant use internal ever again unless u grind it off

[wrx_lou]

The above reasons are why you use a locked brace to hold it closed. Its not the most effective way to just disconnect the hose.

[Guest S T E Y E]

bro done it one like 10+ different cars....the spring pressure is plenty enough to hold the wastegate shut

[Guest]

If you push a turbo hard enough the egbp alone will exceed most internal wastegate spring rates

[Guest S T E Y E]

yea exactly hard enough..... most people on here have mild street cars yea???

[Guest]

Does a mild street car have an external ?

I would have tht if your going to all the trouble of fitting an external you would run a fair bit of boost ?

[wrx_lou]

Not if you want the cool sound. :

[Guest S T E Y E]

i run a external on my street car...i allways do...

internals controll boost like shit....

externals controll boost mint as...

and wen u have the wastey down the bottom with no screamer......gaww pure mint!!!!

[Guest]

 S T E Y E said:

u dont need to weld the internam shut...if u discoonect vacuum hose from it it stays shut...the spring holds it shut...welding is stupid not only warps it if u weld the flap and if u tac the swivel on the outside u just made it so u cant use internal ever again unless u grind it off

rong!!!

its called boost creep.once boost comes on the internal can creep open abit andexhaust gases can enter while also the external opens.losing 2-3psi.easy to weld shut and dont be a horri morri

[nztintin]

 S T E Y E said:

...

internals controll boost like s***....

externals controll boost mint as...

...

yeah and thats why subaru put internals on all their cars... :

[Koom]

 S T E Y E']

i run a external on my street car...i allways do...

internals controll boost like s***....

externals controll boost mint as...

and wen u have the wastey down the bottom with no screamer......gaww pure mint!!!!

Re: boost spike on external wastegate in higher gears?

[quote name='S T E Y E said:

would having a GFB boost tap in the line to the wastegate (has a 12psi spring i beleave) make boost spike in 3rd and 4th? it runs 12psi in 1st and 2nd with the tap wound all the way down wich should be spring pressure??

in 3rd it jumps to 16-18psi then back to 12psi...

if i take the tap out would it stop this issue?

and would having a small size vac line on the wastegate casue this? would a bigger line to the gate help by opening gate earlier?

You sound like a complete tool. If you can't get your external to hold 12psi (yet you think that's mint as) how did you ever manage when it was using the internal??

[Guest]

Externals have there place in the scheme of things and people can do whatever they want, but to say an internal gate can't control boost on a street car is silly.

Thats a stock turbo and the stock boost control solenoid.

[Guest S T E Y E]

it was the boost tap? it does hold boost now