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Old 12-11-2019, 11:39 PM   #1
supreme940
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Question 16V Header Options

Okay, so I'm planning on going 16v+t with my b230ft and have begun a bit of part collecting.

I ended up buying the Yoshifab 8v to 16v manifold adapter, planning on using my old 8V header for my externally waste-gated he351. Unfortunately, upon a bit of mock up, I have a slight suspicion it's not going to fit in the engine bay, and I can't mock it up in the car yet either as it's my daily.



And since it has an external wastegate, I can't use the ported 90+ manifold currently on my car, unless I mill it flat and possibly add on a wastegate port? I've done a bit of research and everybody seems to weld them to the turbine housing instead of the manifold, which I don't really want to do.

Is my best plan of action to wait and see if it'll fit in the car, or sell the 8v manifold and adapter plate and get a new manifold from cm racing?
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Last edited by supreme940; 12-11-2019 at 11:59 PM..
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Old 12-12-2019, 11:16 AM   #2
linuxman51
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should fit about the same, the header flange positioning between an 8v and a16v is about the same, the head gets wider above the gasket and on the intake side.

how tight was that header setup before? what kinda car is it going in?
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Old 12-12-2019, 12:22 PM   #3
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Quote:
Originally Posted by supreme940 View Post
Holy leaking turbo gasket batman!


Here's my 16v Jurbo setup, maybe you can eyeball it and compare, but it looks to me like you just got enough room if you get creative with the WG screamer pipe...



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Old 12-12-2019, 04:40 PM   #4
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Quote:
Originally Posted by linuxman51 View Post
should fit about the same, the header flange positioning between an 8v and a16v is about the same, the head gets wider above the gasket and on the intake side.

how tight was that header setup before? what kinda car is it going in?
940, so more bay room than a 240. It fit fine, a few inches of room between the header and passenger side of the bay. I just figured the 16V would displace it too much from how wide it is. I found probably the only pic I have of it installed:


Quote:
Originally Posted by JerryJS8 View Post
Holy leaking turbo gasket batman!
Right My hardware always came loose no matter what I did. I tried flange bolts, but I couldn't use two nuts per stud because there wasn't enough room to. Might end up tapping the manifold.

Last edited by supreme940; 12-12-2019 at 10:16 PM..
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Old 12-12-2019, 09:17 PM   #5
dl242gt
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You may want to add a bracket to support the setup. That helps stop hardware coming loose since there will be less vibration.
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Old 12-12-2019, 10:19 PM   #6
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Quote:
Originally Posted by dl242gt View Post
You may want to add a bracket to support the setup. That helps stop hardware coming loose since there will be less vibration.
You think a bracket from the bottom of the manifold to the engine block, say the water pipe bolt, would suffice? I'm not sure of other mounting points I could use ATM without looking at the block.
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Old 12-12-2019, 11:40 PM   #7
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looks like the bigger problem you might have is the turbo hitting the head.
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Old 12-13-2019, 06:25 AM   #8
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Right Hand Drive Side,
Im my case is very tight space
I try to use 8V header and thr result show like this

https://imgur.com/lh20ydw

So i need to fabricate Log style manifold

https://imgur.com/nVF8ekg
and move housing to front of the engine as picture.


https://imgur.com/PZPSg8z
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Old 12-13-2019, 10:11 AM   #9
linuxman51
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Quote:
Originally Posted by zhor View Post
Right Hand Drive Side,
Im my case is very tight space
I try to use 8V header and thr result show like this

https://imgur.com/lh20ydw

So i need to fabricate Log style manifold

https://imgur.com/nVF8ekg
and move housing to front of the engine as picture.


https://imgur.com/PZPSg8z

yours is a 240, it's a tighter engine bay
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Old 12-13-2019, 03:15 PM   #10
dl242gt
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Quote:
Originally Posted by supreme940 View Post
You think a bracket from the bottom of the manifold to the engine block, say the water pipe bolt, would suffice? I'm not sure of other mounting points I could use ATM without looking at the block.
The original support bracket bolts to the block under the exhaut manifold. You can build something to use those four bolt holes. That should help the setup.
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