This really an inverted dome piston? - Page 3 - Hot Rod Forum : Hotrodders Bulletin Board
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  #31 (permalink)  
Old 04-15-2013, 01:00 PM
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thanks guys. will post pics when the new pistons arrive. +26cc for 6" rods. Should be interesting.

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  #32 (permalink)  
Old 04-22-2013, 01:58 PM
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Pistons arrived today, stoked. The guys at MAHLE are great to work with.
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  #33 (permalink)  
Old 04-22-2013, 05:06 PM
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Congratulations! I hope you like yours as much as I do mine. Almost a shame to put works of art like that into a spot where you can't show them off to your friends for bragging rights.
Is it just me,or do the pins seem overly thick, or extremely heavy to you? One thing for sure, you know they won't fail. I'm probably used to some thin tapered pins on some Speed Pro's I have on a shelf. However the quality of the piston isn't nearly that of the Mahle's.
ssmonty
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  #34 (permalink)  
Old 04-22-2013, 07:13 PM
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The pins are the only thing that's thick on these! Jeez! The head of the piston is real thin. What else to expect with a 1.125 compression height and 26cc d dish! Heres some pics of the engine mocked up. On the stand, in the living room. Yes ive got an awesome wife.
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  #35 (permalink)  
Old 04-22-2013, 08:26 PM
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Quote:
Originally Posted by 0trbo4myCHEVUICK View Post
The head of the piston is real thin.
I seem to remember reading in an engineering mag several years ago that the crown thickness of most any piston will be about 7% of the bore. So, on a 4" bore piston, the crown should be about 0.280" (over a quarter of an inch).
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  #36 (permalink)  
Old 04-22-2013, 11:54 PM
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Quote:
Originally Posted by techinspector1 View Post
I seem to remember reading in an engineering mag several years ago that the crown thickness of most any piston will be about 7% of the bore. So, on a 4" bore piston, the crown should be about 0.280" (over a quarter of an inch).

With my thumb and pointer it feels like maybe 1/8" here. Ill have to measure it..
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