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Join Date: Oct 2001
Location: Westford, MA USA
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Interesting -- 906 Cylinder...

I don't know if this really is a 906/911R piston or not, but I found it interesting regarding the dimpling added to the cylinder bores and the process for doing that.

Anybody no more behind the process and the affects that it had on performance? Obviously Porsche didn't continue the process, possibly because the Nickesil process got the similar affect via a cheaper process.
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John
'69 911E

"It's a poor craftsman who blames their tools" -- Unknown
"Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman
Old 11-08-2004, 02:23 AM
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Great desk top conversation piece my A**.....Maybe if I bought it for $30.00 bucks.....
Old 11-08-2004, 12:56 PM
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here is a better picture:

http://www.pbase.com/9146gt/image/35129525
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Andy
Old 11-08-2004, 03:38 PM
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Alpha1; Settle down!!!!! One of our members has a Porsche-TAG Turbo F1 block for a coffee table. What's wrong with a 906 cylinder for those of us on a smaller budget?
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John
'69 911E

"It's a poor craftsman who blames their tools" -- Unknown
"Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman
Old 11-08-2004, 03:44 PM
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That would be a chrome cylinder, right? The dimples wouldn't be needed on a nikasil cylinder. I've actually only seen a chromal porsche 356 in person, and it had the same dimples.

Charles Navarro
LN Engineering
http://www.LNengineering.com
Aircooled Precision Performance
Old 11-08-2004, 05:32 PM
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dimpling allows oil retention for P+C lubrication
common to many german aircooled motors in the 60s
don't know how the dimpling was made, but it is chromed
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Stuart Williams

'65 911 2.0
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'71 GT6
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Old 11-09-2004, 09:40 AM
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