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Author Topic: M 8 Headwork  (Read 3521 times)

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cvo1717

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M 8 Headwork
« on: September 14, 2017, 08:23:43 PM »

Does anyone have a CNC program to port the M8 heads Yet?
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Mike
2013 CVO BREAKOUT 117 KIT
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Mainecat

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Re: M 8 Headwork
« Reply #1 on: November 07, 2017, 09:35:28 PM »

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...
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GMR-PERFORMANCE

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Re: M 8 Headwork
« Reply #2 on: November 08, 2017, 12:46:36 PM »

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.
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skippy

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Re: M 8 Headwork
« Reply #3 on: December 28, 2017, 06:14:49 PM »

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....
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ultrafxr

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Re: M 8 Headwork
« Reply #4 on: December 29, 2017, 03:07:18 PM »

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

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Re: M 8 Headwork
« Reply #5 on: January 25, 2018, 08:35:48 AM »

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.
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TorqueInc

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Re: M 8 Headwork
« Reply #6 on: February 14, 2018, 08:40:53 AM »

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
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Unbalanced

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Re: M 8 Headwork
« Reply #7 on: February 15, 2018, 06:23:09 PM »

That is if the seats stay in


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