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Old 04-08-2018, 03:32 PM   #1
speedworxs
 
Drives: |Mr2
Join Date: Feb 2018
Location: Edmonton, Alberta
Posts: 32
Honda Manifold

so i had some industrious thinking today... and went to the local wrecking yard.
so i took the exhaust manifold off of a 99 civic
and compared it to a 1nz (my 03 echo)
i was gambling that the 1.5L displacement would translate to a similar bore spacing and put the intake and exhaust ports in a close distance

not sure which version of the D series engine i took but i can always go back and recheck.
BUT
the exhaust ports were a virtual match. the oval shape honda exhaust ports matched excellent.
meaning, you can get a turbo manifold designed for a honda, cut the flange off and put a 1nz flange on , and for way less effort, an inexpensive mass produced part
so this style


just cut off and put this on
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Old 04-08-2018, 04:21 PM   #2
Runethecursed
 
Drives: 2009 Yaris S
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Location: Socal
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Better Idea, buy manifold, and weld in material to redrill holes using a gasket as a template. belt sand the surface down to flat and have at ye

welding around a flange is insanely hard in comparison,
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Old 04-08-2018, 05:08 PM   #3
speedworxs
 
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but the port shape will have to change a little bit.
i thought it would be better/cheaper than getting a brand new manifold designed and fabricated
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Old 04-08-2018, 09:21 PM   #4
Runethecursed
 
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port shape on the way out of the exhaust side of the head isnt as important as port shape of the intake going in.
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Old 04-09-2018, 09:51 PM   #5
Dliverance
 
Drives: 2012 Black sand pearl <3
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I was thinking about something like this but when I looked, the k series manifolds look to be a better fit
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Old 04-10-2018, 11:02 AM   #6
speedworxs
 
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which is odd, since the k series is a much bigger engine
- i wouldn't think the bore spacing would match as well.
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Old 04-13-2018, 07:35 AM   #7
Dliverance
 
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hmm. I wonder if the Honda Fit would be a better fit.
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Old 04-13-2018, 10:50 AM   #8
BennyLava
 
Drives: 1987 Silverado
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Is the exhaust all that restricted on a yaris? And if so, is the manifold that big of a bottleneck?
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Old 04-16-2018, 09:31 PM   #9
SirDigby
 
Drives: 2007 yaris 3 door
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Quote:
Originally Posted by BennyLava View Post
Is the exhaust all that restricted on a yaris? And if so, is the manifold that big of a bottleneck?
i think these guys are talking about making a manifold for a turbo charged set-up. there are plenty of non-turbo manifolds available.
the manifold is slightly restrictive, like most stock manifolds.
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