Pulled the engine today 914-6 what now?, 2.5 L 20k Miles Aluminum case? |
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Pulled the engine today 914-6 what now?, 2.5 L 20k Miles Aluminum case? |
burton73 |
Feb 15 2007, 09:03 PM
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#1
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burton73 Group: Members Posts: 3,555 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
I decided that as my car was not running when I bought it that I was willing to rebuild it if the compression looked bad. This is what I came up with after putting oil in the plugholes and turned it over by hand. It turned very freely very easy. This car has been sitting for 16 years, as it did not pass smog for the PO. He said it ran great when last run. I pulled the Webbers that are in need of rebuild and you can see some carbon in the intake of the head a little so I am thinking vales.
The compression numbers where something like 120,60,80,60,40,70-I read that S cams give lower compression, but something is wrong as the numbers are all over the place. The one 120 may be OK This is what the engine has according to the PO. 2.5 L 20k Miles Aluminum case 2.2. Rods EMPI, 88 mm pistons and cylinders, Ported heads and manifolds 40 IDS Weber Carbs, CD ignition, 911S Distributor 67 911S Cams This would be my 3rd 911-engine build so I am not worried I just get help with the cam timing. I have bought a oil fed tensioner set I just do not know if I will need a full rebuild. Do you guys like this engine set up as far as the 2.5 and S cams?Ported, Perer Dawes of Dawes Motorsports built this engine in the late 70s. Bob Attached image(s) |
Cap'n Krusty |
Feb 16 2007, 02:48 PM
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
2.2 rods are the same as 2 litre rods. I've never seen, or even heard of, EMPI 6 cylinder parts. I do agree, however, with the comments about 2.5s. It's a great motor. Sounds like you need a top end freshening. Update the chain wheels and supports to the latest stuff (like 1983 pieces) and stick with the 83 style tensioners. The Cap'n
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RSWannabe |
Feb 16 2007, 02:58 PM
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#3
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Newbie Group: Members Posts: 47 Joined: 20-August 06 From: Kirkland, WA Member No.: 6,692 |
2.2 rods are the same as 2 litre rods. That's not quite true. While 2.0 and 2.2 rods are the same length and interchangable (in sets of 6 of course) 2.2 rods are significantly stronger than 2.0 rods and are heavier. Some people swear by the extra strength of the 2.2 rods (Bruce Ansderson for one), while others like the lighter weight of the 2.0 rods and feel they are strong enough. Another difference is that ARP makes rod bolts to fit the 2.0 rods, but not the 2.2's. Brooke |
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