TwinTurbo.NET: Nissan 300ZX forum - Mike Smith Manifolds, here they are....
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Subject Mike Smith Manifolds, here they are....
     
Posted by Woody75 (Denver) on April 07, 2006 at 9:52 AM
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Message DO NOT ASK, that's all I need to say. Don't email me, don't call me, don't ask here. I don't have an answer for you :)

So here they are, they do exist, they are coming, and the biggest thing....they bolt right up.

I decided to compare them to my old style Mike Smith manifolds I had. These are the reworked stock manifolds where he welds on extra material so that he can open up the collector port more for better flow and also hand ports the runners. Keep in mind my old ones are Swain coated already which adds another layer of thickness making the stockers look larger than they realy are. I know most people would liek to see a stock manifold compared to these would be a better comparison. But I already know these new manifolds are way better than stock, so I wanted to see how much better they are over the reworked set.

Here you can see the difference in the diameter of the 2 manifolds and see how more material there is.

Note the angle diff going into the collector

The new manifolds have bosses in them for the EGR hook up. I no longer use this so he left it undrilled/tapped. They also have areas for drilling/tapping for egt probes.

The worst part of the stock manifolds is the restriction at the collector area, especially on the drivers side. Although it's hard to see in the pic, you can see the area Mike added to my stockers so that he could open up the inside for better flow. The new manifold design has even more material and an even larger open area here.

Not the best comparison pics here....
Reworked stocker

New manifold

Mike opened up all the runners on my old manifolds. Even so, the new style are a lot larger and less restrictive.


After they get back from Swain coating, I'll try to get some better comparison pics. My olds ones are dirty on the inside from use.. I tried to clean them up a little but it didn't seem to help. I couldn't get much light to go through them with a flashlight so I could show the differences on the insides of all the ports. I'll also try to clean up a stock set of manifolds as well for pics. But the differences are there, and the flow tests prove it :)

JackB nimble JackB quick JackB can suck my dick =P - james-lee 11/02/01
Arrogance is the #1 weapon against Supra Owners - MikeH 08/06/02
Dallas with a Z: I like the bulge dude 05/02/03
Bezbefootball: Does dick have anything for me? 10/21/03

     
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