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Join Date: Apr 2004
Location: MENTOR OHIO
Posts: 140
74 2.7 rebuild troubles

I was planning on assembling my pistons and cylinders this weekend but have run into a problem. I purchased Goetze rings for my 1974 CIS 2.7 from a very helpful fellow pelcan. I was checking all of my clearances etc when I noticed that the two compression rings in each set measured the same thickness. In waynes book in the appendix it shows the middle ring as being thicker than the other compression ring on a 74. Did I buy rings for a different type of injection or what? The middle ring would have way too much play if I used this set. The ring lands are all in spec and the old ring measures much thicker than the replacement one but also falls right into spec for what the appendix specifies. Any help woud be appreciated.

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1973 arctic silver widebody 3.2
1979 sc white Targa(soon to be Talbot yellow)
2002 silver Audi allroad
Old 01-12-2007, 09:07 PM
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Join Date: Nov 2001
Location: Central Kentucky
Posts: 729
The Euro 2.7 used 90 x 1.5 x 1.5 x 4.0 rings versus I think 90 x 1.5 x1.75 x4.0 for the US 2.7
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Richard Lane
1978 911SC
1973 "Clean" RS clone

Last edited by rlane; 01-13-2007 at 02:30 PM..
Old 01-13-2007, 02:24 PM
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Join Date: Jun 2004
Location: Rio Rancho, New Mexico
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Ohio posted this question in the tech forum and got an answer there.

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DOUG
'76 911S 2.7, webers, solex cams, JE pistons, '74 exhaust, 23 & 28 torsion bars, 930 calipers & rotors, Hoosiers on 8's & 9's.
'85 911 Carrera, stock, just painted, Orient Red
Old 01-13-2007, 07:44 PM
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