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Old 06-10-2009, 02:32 PM   #1
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Default awesome fab work...this should end well

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Old 06-10-2009, 02:37 PM   #2
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in for "needs more head-flange."
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Old 06-10-2009, 02:41 PM   #3
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What car is it supposedly for?
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Old 06-10-2009, 02:44 PM   #4
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Audi?
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Old 06-10-2009, 02:47 PM   #5
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Quote:
Originally Posted by neogenesis2004 View Post
What car is it supposedly for?
audi 20v badass motor.
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Old 06-10-2009, 02:57 PM   #6
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Knew it had to be for an audi or a volvo. I don't understand the significance of the seperate flanges like that though. Is that going to create a lot of turbulance with the outside runners having more space near the flange and the others?
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Old 06-10-2009, 03:43 PM   #7
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I know audis are weird with their 5 cylinders and 5 valves, but do they use unequal cylinder spacing too?
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Old 06-10-2009, 03:46 PM   #8
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well bikes use seperate flanges when turbod, although with much smaller turbos and I've only seen bottom mount. They're also generally braced and very close to the frame. This one should be fine as long as he has plans on bracing it. I'm on my iPhone, but those welds look pretty good, does the stock motor have seperate flanges?
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Old 06-10-2009, 03:56 PM   #9
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Sorry, I just don't see this working out well.
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Old 06-10-2009, 05:45 PM   #10
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This is the ****.
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Old 06-10-2009, 06:20 PM   #11
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Quote:
Originally Posted by y8s View Post
I know audis are weird with their 5 cylinders and 5 valves, but do they use unequal cylinder spacing too?
No, but the ports are oddly spaced.







(note these are 10-valve heads)

Last edited by Joe Perez; 06-10-2009 at 06:47 PM. Reason: pOrts, not pArts.
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Old 06-10-2009, 06:42 PM   #12
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Thread to the carnage?
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Old 06-10-2009, 06:50 PM   #13
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Wtf, is exhaust/intake on the same side?
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Old 06-10-2009, 06:56 PM   #14
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Quote:
Originally Posted by wayne_curr View Post
Wtf, is exhaust/intake on the same side?
On those particular heads, yes. With two-valve engines, the intake and exhaust valves are often side by side (parallel to the major axis of the crankshaft) so there is no rule that says the ports must be on opposite sides of the head.

Many air-cooled engine (such as the VW type 1 - type 3) have the intake ports clustered together on the top, and the exhaust ports on the front and back.
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Old 06-10-2009, 09:51 PM   #15
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Dont forget the old A-series BMC 5 port heads...
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Old 06-10-2009, 09:59 PM   #16
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All right, somebody please treat me like I don't know anything about manifold design and tell me why this thing is so bad? Where are the failure points and why? Please use "paint" and throw up some arrows if you've got the time.
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Old 06-11-2009, 09:12 AM   #17
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My best attempt:
Attached Thumbnails
awesome fab work...this should end well-shitdrawing.jpg  
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Old 06-11-2009, 10:24 AM   #18
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Frank for the win! well sort of...
Tubular manifolds are weak as is compared to cast, but when you take more material out, like a one piece head flange, well now they are even weaker. The flange ties it all together, like a brace if you will.
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Old 06-11-2009, 11:40 AM   #19
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Quote:
Originally Posted by Spookyfish View Post

This is the ****.
It looks like someone made a body kit out of soda cans :(
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Old 06-11-2009, 01:30 PM   #20
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coulda been for a 5 cylinder colaroda or canyon from GM :P still the way the **** squezes down is not good.
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