{
  "factory_source": "https://www.spridgets.de/downloads/Parts-1977.pdf#page=62",
  "factory_read": "1500 plate107-B88 visually read: eight143552 tappets and eight157508 pushrods. Neither fitted identity selected.",
  "manual_source": "https://www.spridgets.de/downloads/Midget%201500%20WH%20Teil%201.pdf#page=12",
  "manual_read": "General specification page12/04-2 visually rechecked: tappet0.7996\u20130.8000in/20.30\u201320.32mm and1.75in/44.45mm length;timing chain0.375in pitch,62pitches. Existing follower nominal midpoint and length retained.",
  "supplier_length_source": "https://www.revingtontr.com/product/149513/name/push-rod-tr5-6-cp-pi-811",
  "supplier_length_fact": "157508 listed198mm overall. Supplier explicitly distinguishes overall length from lower-ball/top-cup effective centers; its alternative tubular rod corrections are not applied to157508.",
  "supplier_photos": [
    "https://www.mgocspares.co.uk/ImageHandler/104095w700h700/143552?Sequence=104095&Width=700&Height=700",
    "https://www.mgocspares.co.uk/ImageHandler/104102w700h700/157508?Sequence=104102&Width=700&Height=700"
  ],
  "photo_read": "Both visually read: open hollow follower and pushrod cup/rounded opposite end. No calibrated cavity,seat,wire/shaft diameter or fitted identity.",
  "retained_follower_outer_diameter_mm": 20.310000000000002,
  "retained_follower_length_mm": 44.45,
  "retained_follower_base_y_mm": -67.89937046422807,
  "retained_follower_x_mm": 65.0,
  "retained_follower_z_mm": [
    -137.75,
    -107.75,
    -58.25,
    -28.25,
    28.25,
    58.25,
    107.75,
    137.75
  ],
  "estimated_follower_cavity_radius_mm": 8.0,
  "estimated_follower_floor_mm": 5.0,
  "legacy_pushrod_line_endpoints_mm": [
    [
      65.0,
      -23.449370464228068,
      0.0
    ],
    [
      32.0,
      103.0,
      0.0
    ]
  ],
  "legacy_pushrod_line_span_mm": 130.68451817564159,
  "supplier_pushrod_overall_length_mm": 198.0,
  "numerical_overall_minus_legacy_span_mm": 67.31548182435841,
  "comparison_datums_limit": "198mm overall and the legacy130.6845mm line span use different end datums. Their difference is a documentary/model mismatch,not measured shortfall,adjuster travel or instruction to extend a fitted rod.",
  "detached_comparison_axis": [
    [
      159.99827134242653,
      -88.58333138028758,
      210.0
    ],
    [
      110.0,
      103.0,
      210.0
    ]
  ],
  "reference_registration": "Outside source engine end atZ210mm. Display arrangement only; comparison hidden in normal whole-car view until selected. Eight legacy pushrods,camshaft,block/head passages,rockers and engine frame stay. No longer rod is forced through the existing engine.",
  "limits": "All follower interior and rod ball/stem/cup/flare dimensions,finished end shape and detached placement are estimates. Follower floor is a recognition closure,not a measured spherical contact seat; no lubrication drilling,face crown,material or cam wear established. Factory-sized follower exterior and axes stay. The old pushrod line begins at the follower rim station,not a verified internal seat. The separate198mm replacement comparison does not resolve common cam/head/rocker registration or identify this car\u2019s rods. No cam/head/rocker relocation,length fitting,loaded articulation,valve lash,torque,safe replacement sequence or verified removal path. UK engine operations are not substituted for missing1975 North American pages.",
  "owner_measurements_applied": false
}