How do i tell the difference between a 2g manifold and an evo3 turbo manifold?

[96gstdsm]

Hey just like the title says, I'm wondering how i can tell if what i got is an evo3 exhaust manifold. I just bought one, and i have no idea how to confirm that it is what i payed for. I bought a used one. Also having the outlet ported, does that mean i have to port match it? Are there measurements i can take to make sure? I'm not thinking i got ripped off just want to make sure before i install it it is worth it to take the time.

__Ryan.

 

[gsxeclipse97]

the evo 3 manifold is going to have a 7cm out let to match the e316g turbo and the 2g is a 6 same a s the t25 or 14b.

 

[DSMunknown]

the evo 3 manifold is going to have a 7cm out let to match the e316g turbo and the 2g is a 6 same a s the t25 or 14b.

No. The "7cm2" that is claimed for this manifold has nothing to do with the diameter of the collector. It refers to volume measurements.

 

[gsxeclipse97]

What i gathered is that he is just trying to tell the difference between the to and that should be the major difference.

 

[96gstdsm]

No. The "7cm2" that is claimed for this manifold has nothing to do with the diameter of the collector. It refers to volume measurements.

So is there any way to tell for sure what i have? There are certain numbers on it, would that make it possible to confirm what it is? Would pictures help?

 

[96gstdsm]

What i gathered is that he is just trying to tell the difference between the to and that should be the major difference.

Yes all i really want to know is if what i just bought and received is actually an evo3 manifold or not.

 

[My96AWD]

2g the mounting flange for the turbo is perftly square evo it has a slight angle on the two sides. see http://roadraceengineering.com/parts/evo/evoman-2gman2.jpg

 

[My96AWD]

No. The "7cm2" that is claimed for this manifold has nothing to do with the diameter of the collector. It refers to volume measurements.

it has a bigger outlet then the 2g stock for stock.

 

[gsxeclipse97]

Thats a big difference I knew it was bigger but no to that extent

 

[madgrrl]

hi. you might try refering to Road Race Engineering's info pages

"These have the same runner diameter as the 2G exhaust manifolds but they have the larger collector that matches the larger inlet to a 16G with a 7cm exhaust housing.."

http://www.roadraceengineering.com/eclturbos.htm it has an explanation and an image:

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I found this all out by searching on google images in less than 3 minutes btw.

 

[DSMunknown]

it has a bigger outlet then the 2g stock for stock.

Thanks for clearing that up.




Here is what you can do. Take off your 2G OEM unported exhaust manifold and measure each of the runner inlets and measure the collector outlet. If you bought an unported Evo III exhaust manifold then the measurements you just took should be smaller than the measurements on the Evo III exhaust manifold. If the measurements between the new exhaust manifold you just purchased and the old manifold you just took off are the same, then you have just purchased an unported 2G exhaust manifold. If the manifold was ported, you will not see the step in the collector area. Here are two photos for reference:




7cm2 gasket on an unported 2G exhaust manifold:

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7cm2 gasket on an unported Evo III exhaust manifold:

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[96gstdsm]

Here are a couple of pictures of the one i got. I has been ported so it is hard for me to tell if it is just a ported 2g one or a ported evo manifold. If anyone knows please let me know. Thanks.




[URL="[ATTACH=full]362502[/ATTACH]"]

[URL="[ATTACH=full]362503[/ATTACH]"]

 

[DSMunknown]

If I wasn't mistaken, that looks like a ported 2G manifold.









Look in the photos below and follow along:




In this first photo, look at the runner dividers (in red circle). The one on the right side in the red circle seems to slope down as it comes into contact with the other dividers. Now look in the blue circle. The same divider (now on the left side in the blue circle) is much higher and rigid.

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Now look in your photo. It seems that this same ridge (circled in red above) seems to have this same/similar slope. I would conclude (without having the manifold in my hands) that it was a heavily ported 2G exhaust manifold.

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Also note the four green circles in the above photos. The first two circles (in the first photo) are indicating wear on a used 2G manifold. As I see it, you can all see a similar wear pattern in the second photo. The vast majority of Evo III exhaust manifolds are brand-spankin' new (that is, they are 100% un-used). I don't see a similar wear pattern/mark on the Evo III manifold like I see on either of the other manifolds seen above.

Slightly related, I would also note the discoloration between the manifold runners and the manifold mounting bracket (seen in your first photo). In addition, you also can see the wear in the second photo you provided us (right on the manifold mounting bracket). I suppose the seller could argue that this manifold was a used Evo III manifold, but I personally wouldn't take his word for gospel truth (unless of course he is a well-trusted seller).

 

[DSMunknown]

Additionally, look at the photos below:

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Obviously, look at the three pink circles. In your photo, the number is 1617 (or 1817). However, in the other photo, it looks like the code is 451L (or something like that). But the point is is that on two different Evo III manifolds in the first photo above the code is the same, but in your photo it is not. Perhaps this will tell you something.

 

[96gstdsm]

Additionally, look at the photos below:

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Obviously, look at the three pink circles. In your photo, the number is 1617 (or 1817). However, in the other photo, it looks like the code is 451L (or something like that). But the point is is that on two different Evo III manifolds in the first photo above the code is the same, but in your photo it is not. Perhaps this will tell you something.

Yeah on mine there are 3 sets of codes, one i s115, another is just 3 and then the last is 1617. Hmm looks like i might have been ripped of a little bit. I got it for like 90 shipped though so not terrible i wouldn't think and it is ported so should flow ok. I am not familiar with porting. Do the ports in my pictures look ok? Would i have to port match anything when i install this?

 

[romeen]

The definitive way to tell the difference is by measuring the diameter of the collector opening. The EVO 3 manifold has a diameter of 60mm which matches the turbine inlet of 16G turbos. My old 2G manifold has a collector diameter of 54mm (I just measured it).
Unfortunately since yours is ported you may never know.

FWIW the cast numbers on my 2G manifold are:
"115" on the runner that mates to exhaust port #1
"4" on runner #2
"8306" on runner #4
Visualize proper orientation as it would mate to the head....i.e. 4-3-2-1 from left to right.
However I don't know whether the numbers on the manifold will identify it or not so use this info. as you will.

 

[matthewdesigns]

Although it's old, I thought I'd add a few photos to this thread, as I found it to be the most helpful in ID'ing an Evo3 manifold. Here are some comparison photos from my install this past weekend. In all the above photos, the Evo3 mani's have a step, however mine does not, and does not show any signs of having been ported, either. If it was ported, then I suspect it was done on a milling machine because it's very uniform inside the collector. The collector does have the tapered shape on the outside of the gasket area, though, as shown in previous photos. The last 2 photos show the collectors with a multilayer 7cm gasket overlay.

http://www.dsmtuners.com/gallery/files/7/6/6/4/6/comparison_collector.jpg

Comparison Collector

http://www.dsmtuners.com/gallery/files/7/6/6/4/6/comparison_top.jpg

Comparison Top

http://www.dsmtuners.com/gallery/files/7/6/6/4/6/comparison_ports.jpg

Comparison Ports

http://www.dsmtuners.com/gallery/files/7/6/6/4/6/2g_with_7cm_gasket.jpg

2g With 7cm Gasket

http://www.dsmtuners.com/gallery/files/7/6/6/4/6/evo3_with_7cm_gasket.jpg

Evo3 With 7cm Gasket

 

[JusMX141]

In all the above photos, the Evo3 mani's have a step, however mine does not, and does not show any signs of having been ported, either. If it was ported, then I suspect it was done on a milling machine because it's very uniform inside the collector.

Yours has been ported, and it was not done by hand.

 

[matthewdesigns]

Well then nifty . It's really clean in there, and was cut so well that the stock machined edge at the gasket surface was not even knicked, or was recut as well.

I'm pretty impressed by the manifold thus far. With no other changes, I'm seeing more airflow in the higher rpms than I did in the past, and I'm holding about 1lb more boost up top, too. Airflow used to peak in the mid 6K's, now it's steady to redline (stock 7.5K). Edit: This was at 23psi...we'll see how it does once I crank boost back up to 28+psi.

 

[UnsafeAtAnySpd]

What are you doing with your old 2g manifold? I need a new one.