wastegate installation on a new headers

[timucin]

i am trying to finish my half headers project,
but what i dont know is
there is a round steel under the wastegate which seats on headers flange;

does this round steel has to have 0 gap with its seat?
cause what i have(flange) ,has bigger radius then wastegate round steel

[timucin]

i am trying to finish my half headers project,
but what i dont know is
there is a round steel under the wastegate which seats on headers flange;

does this round steel has to have 0 gap with its seat?
cause what i have(flange) ,has bigger radius then wastegate round steel

here is pic

[timucin]

pic2

[timucin]

3rd pic

[timucin]

is this ok?
o0r do i have to cut the flange with wastegates round steels bore?

thnx for help

[timucin]

need help here;
i got welder on my one hand and trying to push computer buttons with the other hand,come on help forum members i gotta weld this

[Mark Halligan]

need help here;
i got welder on my one hand and trying to push computer buttons with the other hand,come on help forum members i gotta weld this

Timucin,

looks like you are missing a bit there. There is another part to the wastegate, a round ring that sits in the bottom where it meets the flange.

Mark.

[timucin]

i dont have any other part here;
do you have pic of that part?

[Mark Halligan]

i dont have any other part here;
do you have pic of that part?

I will have tonight when I get home, I'm at work at the moment.

Mark.

[timucin]

ok thnx too much

[Doug_RS2]

I agree with Mark.

Your metal flange needs to have a lip to seal against the wastgate. It should not be a tight fit against the part that moves.

There isn't a gasket so you need the lip to seal to it.

But you are missing a ring that fits tight round the moving part as well. It's confusing to describe - better with pictures.

[timucin]

i can not find anything on etka

[Doug_RS2]

You can see it on the illustration - the outer disc is not in your pic.

And the wastegate comes as one item - you can not buy seperate parts for it. i found that out when I tried to get a cup and shaft for it - you have to buy the complete item!

[auditude]

There isn't a gasket so you need the lip to seal to it.

Question for anyone reading. I had an exhaust manifold (10vt) ceramic coated, and the sealing surface for the wastegate is not as smooth as it was when it was bare metal.

I'm thinking I may have to sand, smooth, or polish that surface to get the wastegate to seal up against it. I suppose I could find out when I run the motor, but does anyone care to speculate on whether it will be okay without some sort of modification like sanding?

Not trying to hijack the thread!

By the way, I have a wastegate that I've lost that same piece to. In the meantime until it shows up again, I've bought another WG.

[Mark Halligan]

Timucin,

here it is