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Everything Else (Not Vincent Related)
Timing an engine
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<blockquote data-quote="oexing" data-source="post: 172512" data-attributes="member: 1493"><p>The Panhard cylinder is most likely same design as aero engine types, head screwed onto the cylinder by a huge male thread on liner/cylinder and female thread in alu or steel head. No gaskets on these I think, just precision machining and torqued down in a jig. </p><p> When having maintenance on valve seats in these engines you can only use piloted Neway type seat cutters for some tidying up , else you´d have to unscrew the head - which would be a dramatic action. </p><p> SV cylinders with integral head typically got finned "cooling towers" or threaded plugs above the valves so you can machine valve seats through these holes. And yes, equal lift at TDC is quite common and will work on all engines perfectly. Just that the Phils went for a tad more torque at 4 degrees before TDC equal lift, a bit less max power then . Equal lift at TDC is best combination of torque and power, equal lift 4 degrees past TDC will get you max power at high revs but less torque. So you see why I point at going for the equal lift settings and bin all funny numbers of valve timings in old handbooks - which were possibly almost correct when they had all new valve gear in building new engines. </p><p></p><p> Vic</p><p></p><p>radial engine cylinders, steel cylinder plus alu heads:</p><p></p><p>[ATTACH=full]59435[/ATTACH]</p><p></p><p>[ATTACH=full]59436[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 172512, member: 1493"] The Panhard cylinder is most likely same design as aero engine types, head screwed onto the cylinder by a huge male thread on liner/cylinder and female thread in alu or steel head. No gaskets on these I think, just precision machining and torqued down in a jig. When having maintenance on valve seats in these engines you can only use piloted Neway type seat cutters for some tidying up , else you´d have to unscrew the head - which would be a dramatic action. SV cylinders with integral head typically got finned "cooling towers" or threaded plugs above the valves so you can machine valve seats through these holes. And yes, equal lift at TDC is quite common and will work on all engines perfectly. Just that the Phils went for a tad more torque at 4 degrees before TDC equal lift, a bit less max power then . Equal lift at TDC is best combination of torque and power, equal lift 4 degrees past TDC will get you max power at high revs but less torque. So you see why I point at going for the equal lift settings and bin all funny numbers of valve timings in old handbooks - which were possibly almost correct when they had all new valve gear in building new engines. Vic radial engine cylinders, steel cylinder plus alu heads: [ATTACH type="full"]59435[/ATTACH] [ATTACH type="full"]59436[/ATTACH] [/QUOTE]
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Timing an engine
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