 Anyone have access to a 917 engine for reverse engineering or a few dimensions here and there?, Local Bay Area even better! |
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| Mueller |
 Oct 12 2016, 12:11 PM
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914 Freak!  Group: Members Posts: 17,155 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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I know it is a long shot.
I have started to model up a 4.5 liter 12 cylinder 917 engine. I am using a few drawings I have found online and pictures. For scaling purposes I have used some known dimensions like the stroke (66mm in this case) There are some components that would be nice to get better dimensions from such as bearings which if they shared 911 bearings that wouldn't be too difficult to obtain the numbers needed. The final goal is to have a 3D model so that anyone could print or machine a scale version of this engine for their own enjoyment!  |
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| Catorse |
Oct 22 2016, 06:09 PM
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Member Group: Members Posts: 194 Joined: 27-August 15 From: Los Angeles Member No.: 19,106 Region Association: Southwest Region |
I phone Alfing Crankshafts in Germany, the original manufacturer of the 917 crank. They told me they would consider making new cranks but they would need to be ordered directly from Porsche. I asked for a drawing of the crank, to which they answered once again I'd need to talk to Porsche....
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| Mueller |
Oct 23 2016, 09:03 AM
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#3
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914 Freak! Group: Members Posts: 17,155 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None
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QUOTE(Catorse @ Oct 22 2016, 05:09 PM)  I phone Alfing Crankshafts in Germany, the original manufacturer of the 917 crank. They told me they would consider making new cranks but they would need to be ordered directly from Porsche. I asked for a drawing of the crank, to which they answered once again I'd need to talk to Porsche.... Great research finding the OEM! Are there improvements to be made such as material change or bearing size? (Smaller 2" SBC or Honda bearings?) |
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| Catorse |
Oct 23 2016, 10:42 AM
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Member Group: Members Posts: 194 Joined: 27-August 15 From: Los Angeles Member No.: 19,106 Region Association: Southwest Region |
QUOTE(Mueller @ Oct 23 2016, 08:03 AM) QUOTE(Catorse @ Oct 22 2016, 05:09 PM) I phone Alfing Crankshafts in Germany, the original manufacturer of the 917 crank. They told me they would consider making new cranks but they would need to be ordered directly from Porsche. I asked for a drawing of the crank, to which they answered once again I'd need to talk to Porsche.... Great research finding the OEM! Are there improvements to be made such as material change or bearing size? (Smaller 2" SBC or Honda bearings?) Yeah it was quite a hunt. Somone posted a pic of a crank with this symbol on it, really grainy, finally started googling the letters until I found ALFING. Like hitting gold! I don't think bearings are an issue. You can always have them made, and at the end of the day if you are making a repro 917 engine it's a one off anyways.... |
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Posts in this topic
Mueller Anyone have access to a 917 engine for reverse engineering or a few dimensions here and there? Oct 12 2016, 12:11 PM
Catorse Well shit, why didn't you just ask. Got two 91... Oct 12 2016, 01:15 PM 7TPorsh Maybe talk to this guy...
p1wpi2o1Q2o Oct 12 2016, 01:53 PM damesandhotrods From what I remember reading the 908 flat 8 and th... Oct 12 2016, 02:03 PM
Mueller
From what I remember reading the 908 flat 8 and t... Oct 12 2016, 02:07 PM
davesprinkle
From what I remember reading the 908 flat 8 and t... Oct 12 2016, 08:07 PM mepstein 962 yes, 917 not yet... Oct 12 2016, 02:15 PM SirAndy Just weld together two 2.2L /6 engines. That shoul... Oct 12 2016, 08:35 PM wndsnd I think Towle has one in his barn behind a few 911... Oct 12 2016, 08:49 PM gms ask this guy
PORSCHE 917 ENGINE ANIMATION Oct 12 2016, 08:51 PM Catorse Mueller,
Honestly though I am really serious abo... Oct 13 2016, 08:35 AM 914fahrer My pictures
Oct 13 2016, 09:26 AM Dave_Darling One of the attendees of the old MUSR had a 917 cra... Oct 13 2016, 06:13 PM horizontally-opposed Canepa has a few of those engines in the shop, at ... Oct 14 2016, 08:47 PM jcd914 You could talk to Rich or Jerry at Jerry Wood... Oct 15 2016, 12:45 PM Mueller Thanks Pete and Jim.
I would think with the brain... Oct 15 2016, 08:12 PM Mueller Small world, turns out a fellow Volvo nut works at... Oct 22 2016, 03:51 PM |
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