Photos
| Typical intake port from a MHS Stage 1 head as delivered. White grease is lithium for the valve stem. This is how your heads will appear when you unpack them. |
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| Typical exhaust port from a MHS Stage 1 as delivered. |
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| Picture showing bowls and chambers before assembly. |
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| Another shot of the chamber side just before surfacing. |
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| Chamber with oversized aftermarket valves. |
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| Head on the CBN Rottler surfacer. |
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| Head with a spark plug insert. |
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| Head with Timesert spark plug inserts that went lean with a bunch of boost. You can see more details here. |
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| Close up of the damaged chamber. The Timeserts stayed in place while everything else was melting away............. |
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| Tool for quality control on the valve stem height. |
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| Tool used for compressing and installing valve springs. |
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| Measuring tool showing the height of a stock PI intake port. |
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| Same measuring tool with same height showing how far the roof is raised in the PI intake. This is right under the lash adjuster where an extra 1/4" of aluminum was left in the casting in case of core shift. |
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| Stock 4V intake bowl showing how stock guides are sized poorly. The stock guides are too short and allow a lip in the bowl at the worse possible location for flow. |
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| Installation of custom longer bronze guides. |
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| Another photo of the stock port. |
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| Final port photo with longer guides blended into roof of port. Not only does the valve have more support we fix the lip issue as well. |
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| 4V exhaust port before. |
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| 4V exhaust port after. |
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| Finished product before valve job. |
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| Stock Navigator intake bowl |
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| Ported Navigator intake bowl |
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| Stock Navigator intake |
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| Ported raised roof Navigator intake |
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| Stock Navigator exhaust |
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| Race ported Navigator exhaust |
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NPI Head photos
| Stock intake port |
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| Ported intake port |
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| Stock intake bowl |
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| Ported intake bowl |
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| Stock exhaust port |
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| Ported exhaust port |
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| Stock exhaust bowl |
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| Ported exhaust bowl |
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TFS Head Photos
