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914-6 GT | profile | all galleries >> The 914-6 GT Project >> 906 Twin-Plug Racing Engine #1 (The GT) >> 906 Center-Lube Cams - Set 1 tree view | thumbnails | slideshow

906 Center-Lube Cams - Set 1

The Porsche early center-lube racing camshafts use a pair of special fine-threaded nuts and 'convex' washers (concave). Here are some photo links showing some dial-caliper measurements of the 906/RSR Camshaft Special Nuts and Convex Washers.

Convex Washers: 32mm I.D. https://pbase.com/9146gt/image/45499782

Camshaft Shoulder: 30mm O.D. https://pbase.com/9146gt/image/45499784

Fine-Threaded Nuts: 27mm I.D. https://pbase.com/9146gt/image/45499783

Don't pay too much attention to the O.D. of these fine-threaded nuts. Here is why. I have seen the special nuts O.D. made in two sizes. Why? I don't know. They were made available in both, a 41mm O.D. https://pbase.com/9146gt/image/39886397 and also in a 46mm O.D. https://pbase.com/9146gt/image/45499781 - The I.D. of these 2 fine-threaded pitch nuts is exactly the same so they work on both the 906 and 911 RSR center-lube racing camshafts. Ask Jerry Woods, I did. Hope you find this information helpful.
Porsche Factory 906 Camshaft Specifications
Porsche Factory 906 Camshaft Specifications
906 Camshafts 2nd Set Feb142005 - Photo 1
906 Camshafts 2nd Set Feb142005 - Photo 1
906 Camshafts 2nd Set Feb142005 - Photo 2
906 Camshafts 2nd Set Feb142005 - Photo 2
906 Camshafts 2nd Set Feb142005 - Photo 3
906 Camshafts 2nd Set Feb142005 - Photo 3
906 Camshafts 2nd Set Feb142005 - Photo 4
906 Camshafts 2nd Set Feb142005 - Photo 4
906 Camshafts 2nd Set Feb142005 - Photo 5
906 Camshafts 2nd Set Feb142005 - Photo 5
906 Camshafts (A. Serrano - Set #2) Photo 2
906 Camshafts (A. Serrano - Set #2) Photo 2
906 Camshaft Nuts and Washers - Photo 1
906 Camshaft Nuts and Washers - Photo 1
906 Camshaft Nuts and Washers - Photo 2
906 Camshaft Nuts and Washers - Photo 2
906 Camshaft Nuts and Washers - Photo 3
906 Camshaft Nuts and Washers - Photo 3
906 Camshaft Nuts and Washers - Photo 4
906 Camshaft Nuts and Washers - Photo 4
906 Camshaft Nuts and Washers - Photo 5
906 Camshaft Nuts and Washers - Photo 5