Thread: tial wastegate question

I finally got a semi decent pic of the flange on the manifold:

I'd cut that off and get a new TiAL flange welded on.

There are two types of v-band flanges I've seen. Slip fit and butt end style fit. The butt end style fit are the good ones and will not allow you to mess things up in a bad way. Yours looks like a slip fit where the person slipped it on too far leaving you without enough room for the valve seat to recess into the pipe.
That's just a guess anyway.

You could probably do some creative grinding or filing on the inside pipe to make things work. Just don't mess up the actual flange.

What is causing the interference exactly?

Edit: On second look yours looks like the butt end style flange, it just wasn't designed with enough recess for the tial wastegate. Very odd... I still say you grind it down a mm or two.

Hey Z! It should work if both the W/G and flange are the same diameter. The valve seat should be spring loaded against the W/G piston (plunger). It may help if you pushed (force) the W/G flush against the flange when you try to put the locking clamp on. There will be some resistance because of the spring when doing this so you may need to have someone else help you. Hope this info helps.

Man I've tried everything, I tried pushing in the valve seat...I've tried tapping in the valve seat with a rubber mallet...I've pushed in the piston, and then tried to tap in the valve seat with a rubber mallet...

I don't think the valve seat is moving...I'm not sure if I should try to weld on a new flange onto the manifold or if I should just buy a new wastegate or if I should open up this wastegate and try to reseat the valve...

I think you should just weld on a new flange. That flange doesn't look recessed enough. Mine for sure was recessed more than yours is.

It's a protech manifold and I know two other people that were able to successfully use it...I suppose welding on a new flange is cheaper than buying a new wasetage.

Thats right! Two other people ran this exact setup with no problems. That spring piston combo is hard to compress. Try getting another pair of hands to help out.

You can also mark the W/G cover. Carefully disassemble the W/G by removing the allen bolts. Be careful, the spring will knock you out. Install the W/G to the manifold which will be easier as there is no spring tension. Reassemble the W/G while it is on the manifold.

Something is stuck. It should move. It should drop out into your hand.

I'd do something like that. Get that valve seat free again and then you'll be in business I bet. Maybe try a few things before taking it apart, and then take it apart if you have to.

You may still need some extra hands unless you have a bench vise.