Tuesday, June 14, 2011

Clean up time!

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With the intake and exhaust guides removed I took the opportunity to clean up the ports a little bit more.

Started with the exhaust............still a little bit dirty, not for long!
The F22A6 head really doesn't have much to remove when it came to the valve guide humps. I had the bulk of the guide humps removed fairly quickly.
 Took them up to an 80 grit for now.......they will be mirror finish when completed.
The intake had less guide material...
However the port itself was an odd shape. The long radius had a bit of a dead zone directly behind the valve guide.The transition from the throat into the seat has a pretty good step as well.
Once I get a flow bench setup I will spend a bit more time figuring out what to do with that dead zone for now I removed a bit of material from the front of the guide only.
 Looks like I may have to add some material to fill that dead spot....only time on the bench will tell.
For now the exhaust ports will get finished and the intake ports will have to wait.

Time to start wet sanding

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