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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    Another step forward for camshaft I have temporarily installed the camshafts complete with bearings, aluminum spacers , gear ,intake and...
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  • Foketry
    Foketry reacted to mayhugh1's post in the thread Ford 300 Inline Six with Like Like.
    I've been getting up to speed on helical gear machining since my last post, and so I don't have much show & tell. I've finally gotten...
  • Foketry
    Foketry reacted to rodue's post in the thread Another Knucklehead Build with Like Like.
    I don't have a CNC mill so I am doing a lot of hand work. I have a question and maybe you showed it on the gear box, the length crank...
  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    A further test: transmission gears between crankshaft and camshafts, 15 gears in total :7 gears on the left, 7 on the right, one in the...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    Bearing alignment test to be sure that all bearings rotate well, therefore well aligned and not deformed by the caps I did this test ...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    To finish the caps, with the correct size so as not to deform the bearings or, on the contrary, leave gap, I measured the seats one by...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    Milling of bearing seats and the surface for cover on the camshaft housing the planes to be milled are inclined, I built a simple...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    The casting caps first machining, 3 mm hole and counterbore second machining, roughing of the bearing seat and face milling...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    To avoid complex machining I made 5 aluminum castings, each with 7 joined pieces, I made patterns with 3D printer the shape...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    Bearing caps for camshafts As the original Porsche engine I made 8 supports for each camshaft, the camshaft slides directly into the...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    yes, I will make a small hole in center to relieve pressure, when all tappet thicknesses will be fine-tuned
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  • Foketry
    Seeing its been 2 and a half years since I last posted, I re-introduced myself in the Introductions forum. Hopefully things are stable...
  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    In general, all engines with overhead camshafts have shims under the tappets, in my case since this engine will work a few hours in its...
  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    Valve tappets , qty 24 Are made of bronze and kept in axis by an external steel bushing. The ratio between tappet diameter and bushing...
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  • Foketry
    Foketry replied to the thread Porsche 917 flat 12 engine.
    Are commercial gears, available at any bearing shop. Module 1, 32 teeth Involute gear cutters is much more expensive than commercial...
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