 External Wastegate? |
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 May 8 2006, 06:20 PM
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#1
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 Eats and sleeps DSM jargin.  Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636  |
Here is my question. I have an external 40 mm wastegate that I bought and need to install. I have two choices to go with here as in exhaust types.
1. is tubular exhaust manifold and a tubular o2 housing. 2. is 2g ehaust manifold and 2g o2 housing. The first choice would be easier to weld to. But I also know that they break easily with the weight of it all. The second choice I have heard different things about. Like it is hard to weld to, or should I say vertually impossible for a good weld. I would like all the input I can get on this. Thanks guys in advance! 
-------------------- Thanks, Bud!
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May 9 2006, 06:25 AM
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#2
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 Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
Use a 2G exhaust manifold and a tubular O2 housing. You can weld the WG inlet to the O2 housing.
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May 9 2006, 09:33 AM
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#3
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
I don't think that will work nate. Here is a pic so you can see why.
-------------------- Thanks, Bud!
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May 9 2006, 09:44 AM
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#4
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Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
I'm not catching you. If you have a tubular O2 housing that bolts directly to your turbine housing there is no reason you can't cut a hole in it and weld on a flange for the external wastegate. If you are concerned about the internal WG hole just get a tubular housing the blocks it off. Looks like its already welded shut though.
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May 9 2006, 09:49 AM
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#5
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
That was what I was concerned about. It being welded shut. Thanks for the help!
-------------------- Thanks, Bud!
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May 9 2006, 08:50 PM
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#6
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 Post Master Group: Members Posts: 780 Joined: 14-July 04 Member No.: 338 |
I don't understand why that's stopping you. Drill out the wastegate in the turbo, weld a separator in the tubular o2 housing to prevent cross-over, bada-bing, you're there. Or is there something that I'm missing?
-------------------- QUOTE (gsxracer80 @ Oct 31 2006, 12:41 AM)
thanks hcar.... I am still massaging that area trying to get it ready...  |
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May 9 2006, 09:20 PM
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#7
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
My tubular o2 housing has an open dump setup on it.
So what goat is saying I can drill the old wastegate out. Then attach/weld the wastegate to the open dump part of the o2 housing. Is this correct? Sorry if I sound retarded  ! But this is something I will have to explain to the person doing the welding.
-------------------- Thanks, Bud!
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May 10 2006, 11:46 AM
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#8
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Post Master Group: Members Posts: 780 Joined: 14-July 04 Member No.: 338 |
^^^Yes, that's what I'm saying, and it should work so long as you can get that stock wastegate removed and cleaned up. At least, I see it as a viable option, though others may have a deeper understanding of the task at hand.
-------------------- QUOTE (gsxracer80 @ Oct 31 2006, 12:41 AM)
thanks hcar.... I am still massaging that area trying to get it ready... |
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May 10 2006, 12:03 PM
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#9
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Zen Master DSM Group: Moderators Posts: 3,008 Joined: 10-January 01 From: in front of you Member No.: 5 |
That will work perfectly. Goat said it in a much clearer manner than I did.
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May 10 2006, 01:47 PM
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#10
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
Man I don't know what they used to weld it shut. But I have been working on it for the last two hours. It is acting like a woman!
 Thanks guys! I bow down to you! -------------------- Thanks, Bud!
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May 10 2006, 04:50 PM
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#11
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
I would like to know if I can port the wastegate opening bigger? I have a pick of how it turned out. This is after I got the old wastegate flapper out. I honestly don't know.
-------------------- Thanks, Bud!
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May 10 2006, 07:51 PM
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#12
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Web Administrator Yo! Group: Admin Posts: 516 Joined: 30-August 04 From: Mackinaw, IL Member No.: 376 |
Seems to me that porting the WG opening would help reduce the risk of boost creep and would not impact performance. Let's see if anyone disagrees...
-------------------- Fast & Furious on the outside...DSM under the hood!!!
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May 10 2006, 08:02 PM
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#13
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DSM Tech Wizard Group: Members Posts: 2,256 Joined: 10-January 01 From: central IL Member No.: 10 |
If you're running an external wasegate, open that sucker up!
-------------------- The fastest car I own is a minivan....
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May 10 2006, 09:32 PM
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#14
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
That is what I was looking for! Woo Hoo! I am going to reem it tomorrow. I still have to finish the exhaust manifold. But it is going great. I also have to get new carbide burr bits. Those things are like hunting for a needle in a hay stack.
-------------------- Thanks, Bud!
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May 11 2006, 12:41 PM
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#15
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Post Master Group: Members Posts: 780 Joined: 14-July 04 Member No.: 338 |
A&I supply has them in stock. A sleeve of four different burrs will run about $45.
-------------------- QUOTE (gsxracer80 @ Oct 31 2006, 12:41 AM)
thanks hcar.... I am still massaging that area trying to get it ready... |
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May 11 2006, 02:31 PM
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#16
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Eats and sleeps DSM jargin. Group: Members Posts: 1,108 Joined: 2-October 05 From: Waverly, Illinois Member No.: 636 |
Done!
 
-------------------- Thanks, Bud!
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May 11 2006, 02:42 PM
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#17
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Post Master Group: Members Posts: 780 Joined: 14-July 04 Member No.: 338 |
Looks good. Let us know when you get the thing together.
-------------------- QUOTE (gsxracer80 @ Oct 31 2006, 12:41 AM)
thanks hcar.... I am still massaging that area trying to get it ready... |
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