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[cvo1717]

Does anyone have a CNC program to port the M8 heads Yet?

[Mainecat]

T-man performance recently posted a video on FB of a cnc machining heads.  I asked if they were for the M8, got no response.  Figuring it has to be though...

[GMR-PERFORMANCE]

Stock head is good for at least 124 Hp stock T/b start to me a limiting factor at that point . Just using peak numbers as a point not saying that one would not work over the other.

[skippy]

Look at the article that T Man posted on Facebook about leak down on the new M8 heads  very interesting or may I say scary....

[ultrafxr]

Look at the article that T Man posted on Facebook about leak down on the new M8 heads  very interesting or may I say scary....

Yeah. Saw that. Dislodged exhaust valve seat caused piston to smack valve on my ‘07 at 22k. Shut me down 300 mikes from home on a cold November day. We were returning from a CVO GTG at Copperhead Lodge. Not a fun time. Sure hope this is not. Widespread problem on the M8s.


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[MCE]

Stock head is good for at least 124 Hp stock T/b start to me a limiting factor at that point . Just using peak numbers as a point not saying that one would not work over the other.

The factory valve job leaves allot on the table (Like all their other heads). A better seat profile adds a fair amount.

[TorqueInc]

The factory cnc heads have the factory valve job.....makes no sense whatsoever......pretty good gains there.

Don't need to CNC these things.....bout and hour tops and gains show up everywhere..... without adding anything to speak of in port volume

[Unbalanced]

That is if the seats stay in


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