Wastegate Stalk off Manifold

TTipe

Snake Skinner
Jul 25, 2008
722
26
28
New Hudson Michigan
I'm trying to locate a 2.00" OD ,1 ft length piece of 304 stainless tube for an external waste gate tap. Suppliers say my order is too small or they want my stage 2 block in trade??? Anyone know where I can purchase a couple of small pieces?
 

Anthony P

Active Member
Jan 24, 2007
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TTipe

Snake Skinner
Jul 25, 2008
722
26
28
New Hudson Michigan
Anthony

Thanks a bunch for the response. I was part of the Powertrain & base engine group at Buick & GM Powertrain. The turbo v6 group are friends & co-workers.
 

dank GN

BlackArts Automotive (661)993-8277
Jan 11, 2009
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SoCal the high desert
What you can’t buy a small piece of stainless? Here is a picture of the one I just did for my headers when I swapped to a T4 4 bolt turbine housing. I got a small piece from my local metal supply Patton’s
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TTipe

Snake Skinner
Jul 25, 2008
722
26
28
New Hudson Michigan
I have a chunk of pipe on the way. The hope used to be that you could scrounge around in a scrap tub & find a usable piece of stock. External gates provide rock steady control & in most cases a noticeable power increase.
 

dank GN

BlackArts Automotive (661)993-8277
Jan 11, 2009
3,856
515
113
SoCal the high desert
I have a chunk of pipe on the way. The hope used to be that you could scrounge around in a scrap tub & find a usable piece of stock. External gates provide rock steady control & in most cases a noticeable power increase.
This isn’t always true . I have seen some terrible placements of the gate . So if you have the wastegate placement correctly in the flow path then yes you should have rock steady boost control .
 

TTipe

Snake Skinner
Jul 25, 2008
722
26
28
New Hudson Michigan
Yeah, thanks for the reminder about the gate placement. This is critical for solid control. The supplier of my down pipe agrees that an external gate yielded another 18 hp. I don't know what their test plan looks like. I have had prior experience with poor gate placement and it was a complete re-do. Thanks for your help and I appreciate your knowledge / expertise.