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Join Date: Jul 2001
Location: Thunder Bay, ON
Posts: 4,551
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Crazy previous engine rebuild
I just took apart my '66 donor engine this past week and found a couple of suprises.
On the good side - 67S Heads instead of the standard ones On the questionable side: previous rebuild with 5 'S' Pistons + 1 906 Piston! I wouldn't mention it, but last year I took apart a previously rebuilt 2.7 engine with 5 Mahle Nikaisl pistons and one KS Alusil! It's odd - I just don't see how mistakes like mismatched pistons could be made by someone rebuilding an engine Regards, Andrew M Same engine: 
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1970 911E - track / weekend car 1970 911S - under restoration 1986 930 Slant Nose - fun car |
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01-21-2006, 06:51 PM
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Location: Kansas City
Posts: 1,675
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wow! I often wondered how something like that would run! Those pistons have to weigh different amounts, have different CR, everything!
Sheesh... JA
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John - '70/73 RS Spec Coupe (Sold) - '04 GT3 |
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01-22-2006, 07:26 PM
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Location: san jose
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Reminds me of my 1969 912. When I went to rebuild it, it had a big bore kit and a 67 crank. Rebuilt back to original with 69 crank and Mahle P&Cs.
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steve old rocket inguneer |
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01-23-2006, 07:45 AM
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Location: Bremerton, WA
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Did it have a motor miester sticker anywhere on it?
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1983 911SC 1977 911S "parting out" |
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02-13-2006, 09:20 PM
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Join Date: Dec 2001
Posts: 9,569
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Actually the MM touch would be rebuilding your 906 with one 901 piston.
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'66 911 #304065 Irischgruen ‘96 993 Carrera 2 Polarsilber '81 R65 Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13) Ex-'88 Carrera (Sold 3/29/02) Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04) Ex-'89 944 Turbo S (Sold 8/21/20) |
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02-14-2006, 11:44 AM
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Location: Thunder Bay, ON
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All of the internal parts measured well within spec, so MM has probably never been near it
 AM
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1970 911E - track / weekend car 1970 911S - under restoration 1986 930 Slant Nose - fun car |
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02-14-2006, 02:39 PM
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Join Date: Jan 2003
Location: Langley,B.C.
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I doubt that the piston fiascos were mistakes. My guess is those were what the builder had on hand..... Any chance you got both of those motors from the same person?
Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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02-14-2006, 03:18 PM
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Location: Thunder Bay, ON
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Thats the odd thing - both motors were from totally different places -one local to Calgary, the other from California.
AM
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1970 911E - track / weekend car 1970 911S - under restoration 1986 930 Slant Nose - fun car |
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02-14-2006, 03:25 PM
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Location: Langley,B.C.
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Wow, very odd. On the other hand, you now have a 906 piston for the shelf!
 Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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02-14-2006, 03:43 PM
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