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Author Topic: Wastegate placement advice needed on sinktrap manifold  (Read 8813 times)

ohisofly

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Wastegate placement advice needed on sinktrap manifold
« on: January 05, 2014, 03:59:13 PM »

As some of you know I'm in the process of making this manifold, I'm just unsure where to put the wastegate. Here's what I'm working with







This would be the ideal place for my wastegate, but as you can see the flange wouldn't be fully exposed to collector part of the manifold



Would this still be ok?
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jdmhatchracer94

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #1 on: January 05, 2014, 04:30:28 PM »

you'll bee ok with it right there
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ohisofly

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #2 on: January 06, 2014, 01:30:15 PM »

you'll bee ok with it right there
Sweet sounds good
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The_Beave

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #3 on: March 11, 2014, 08:59:54 AM »

I'd put a dual inlet for the wastegate on the 90* turns up. This will give the wastegate flow priority yielding better control.
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ohisofly

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #4 on: May 16, 2014, 12:19:36 AM »

I'd put a dual inlet for the wastegate on the 90* turns up. This will give the wastegate flow priority yielding better control.
I appreciate the input but unfortunately that's just not an option, I literally don't have the room

I'm finally working on this again and need some more input, here's how I cut it



Here are my filler pieces



Does it really make a difference which way this pipe goes (both pics below) or can I just get away with it being at a straight 90 degree? Just wondering because it would make things much easier considering that first piece is the only curved piece that's that size, at least out of what I have found so far



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ratcityrex

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #5 on: May 16, 2014, 12:45:07 AM »

Your gonna have a bunch of problems with keeping boost steady with that setup right there. Your only bleeding off exhaust from 2 of your cyl.
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Tim

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #6 on: May 16, 2014, 08:50:49 AM »

Your gonna have a bunch of problems with keeping boost steady with that setup right there. Your only bleeding off exhaust from 2 of your cyl.
looks like he cut the fuck out of the insides of both tubes.
maybe going to box it in?
I think its wonderful
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ratcityrex

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #7 on: May 16, 2014, 11:50:46 AM »

Your gonna have a bunch of problems with keeping boost steady with that setup right there. Your only bleeding off exhaust from 2 of your cyl.
looks like he cut the fuck out of the insides of both tubes.
maybe going to box it in?
I think its wonderful


Didn't even see that. So I guess if that's the case, if possable run the one with the curve so it's a little smoother transition to your wg. Otherwise this shit nig nog black and I approve of this :-)
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New setup is old bottom end with a hype r head with gsr cams. built lsv with hx35 @ 26psi on pump gas
LEED tuned! 434hp/329tq http://www.youtube.com/watch?v=_pbDXZxZdZs
http://www.realhomemadeturbo.com/forum/index.php/topic,16195.0.html

Old Setup B18a1 296hp/289tq LEED Tuned 20psi on pump! http://www.youtube.com/watch?v=2Yj-Z90j4W4   
http://www.realhomemadeturbo.com/forum/index.php/topic,205.msg2437.html#msg2437

ohisofly

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #8 on: May 16, 2014, 04:11:24 PM »

Your gonna have a bunch of problems with keeping boost steady with that setup right there. Your only bleeding off exhaust from 2 of your cyl.
looks like he cut the fuck out of the insides of both tubes.
maybe going to box it in?
I think its wonderful


Didn't even see that. So I guess if that's the case, if possable run the one with the curve so it's a little smoother transition to your wg. Otherwise this shit nig nog black and I approve of this :-)

Yep going to box it all tonight, I'll post pictures when I get a chance
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dvst8r

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #9 on: May 20, 2014, 09:36:47 AM »

For the best control, it would be placed at the bottom side of your header connection flange.
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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #10 on: May 29, 2014, 01:40:25 PM »

I'd have put it at the top of the 2 tubes just before the final 90* elbows coming up. The slight backpressure caused by the elbow will force more than enough gasses into the WG tubes. I'd make the tube into a mini collector similar to the turbo collector. You could have then divided both and used a divided HX35 for 10 shades of awesome.
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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #11 on: May 29, 2014, 05:49:30 PM »

run dual wastegates.
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ohisofly

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #12 on: July 21, 2014, 07:20:46 PM »

This thing is finally done, the manifold was boxed (unfortunately not with stainless) and then went over again with the tig to smooth the welds out. It's incredibly sturdy so as of now I don't plan on any extra reinforcing to support the manifold.












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danz

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #13 on: July 27, 2014, 02:03:19 PM »

Greasy as hell.  Nice.
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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #14 on: July 27, 2014, 08:19:22 PM »

The last sinktrap I made was exactly the same as your design, except it was WAY further away from the manifold. Like, we had 2-3 feet of pipe off the manifold until it hit the WG. It was fine, I wouldn't worry about it.
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ohisofly

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Re: Wastegate placement advice needed on sinktrap manifold
« Reply #15 on: July 30, 2014, 06:59:55 AM »

Sounds like I'll be fine then, good to hear  O0
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