Canadian_CD9A
Supporting Member
- 1,222
- 1,104
- Feb 10, 2012
-
Winnipeg,
MB, Canada
I know it's 2023 and these questions are still being asked, but looking around on the forum, the question of Evo 1 & 2 still hasn't been concretely answered.
I have what I'm fairly certain is an Evo 1 or 2 exhaust manifold, which both share part number MD187529. The manifold has "529" cast onto it, and looks the same as the original manifold I took off my Evo 1. Yes, it's cracked and probably junk.
My manifold is definitely not an Evo 3 exhaust manifold, which has visual differences. The following is an Evo 3 manifold, which is also cracked at the divider, funny enough (so much for the supposed longevity of better materials).
The Evo 1/2 manifold has a 60ish mm flange (the photo perspective doesn't accurately show the measurements, but it's 60mm).
This Evo 1/2 manifold necks down to 54mm on the step-down, as that diameter matches the 54mm DSM-style gasket. Notably, the Evo 1 and Evo 3 both use the MD171220 gasket.
These measurements appear to match the Evo 3's 60mm outlet flange, and the Evo 3 also has the inner step that people hog out to match the 60mm. I can't really any difference in runners from photos alone. Aside from that, can we say that the Evo 1-3 manifolds are all equivalent out of the box and in terms of ultimate potential?
I have what I'm fairly certain is an Evo 1 or 2 exhaust manifold, which both share part number MD187529. The manifold has "529" cast onto it, and looks the same as the original manifold I took off my Evo 1. Yes, it's cracked and probably junk.
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My manifold is definitely not an Evo 3 exhaust manifold, which has visual differences. The following is an Evo 3 manifold, which is also cracked at the divider, funny enough (so much for the supposed longevity of better materials).
You must be logged in to view this image or video.
You must be logged in to view this image or video.
The Evo 1/2 manifold has a 60ish mm flange (the photo perspective doesn't accurately show the measurements, but it's 60mm).
You must be logged in to view this image or video.
This Evo 1/2 manifold necks down to 54mm on the step-down, as that diameter matches the 54mm DSM-style gasket. Notably, the Evo 1 and Evo 3 both use the MD171220 gasket.
You must be logged in to view this image or video.
These measurements appear to match the Evo 3's 60mm outlet flange, and the Evo 3 also has the inner step that people hog out to match the 60mm. I can't really any difference in runners from photos alone. Aside from that, can we say that the Evo 1-3 manifolds are all equivalent out of the box and in terms of ultimate potential?
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