| Color |
'260'
|
'289'
|
| PISTON |
Color |
Color |
| Type |
Autothermic |
As '260'
|
| Material |
Aluminium alloy, tin plated |
"
|
| Form |
Steel struts, slipper skirt, can ground |
"
|
| Diameter |
Color |
Color |
| - Red |
3.7976/3.7982 in. (96.45/96.47 mm.) |
"
|
| - Blue |
3.7988/3.7994 in. 96.48/96.50 mm.) |
"
|
| Rings - Compression-Top |
Cast iron alloy, straight face, chromed |
"
|
| -Second |
Cast iron alloy, straight face, scraper groove phosphate coated |
"
|
| -Scraper-Rails |
Steel, chrome plated, oxide coated |
"
|
| -Expander |
Blued steel |
"
|
| Oversizes available |
Color |
Color |
| Color |
.020 in. (.50 mm.) |
.020 in. (.50 mm.) |
| Color |
.030 in. (.76 mm.) |
.030 in. (.76 mm.) |
| Color |
.040 in. (1.1 mm.) |
.040 in. (1.1 mm.) |
| Color |
.060 in. (1.52 mm.) |
Color |
| Piston to bore clearance at right angles to gudgeon pin) |
.0021/.0039 in. (.053/.099 mm.) |
As '260'
|
| *Max. permissible weight variation |
(per piston) 599/605 grammes |
"
|
| Ring Gap (fitted) in standard bore |
Color |
Color |
| - Compression |
.010/.032 in. (.25/.81 mm.) |
"
|
| - Scraper |
.015/.067 in. (.38/1.7 mm.) |
"
|
| Lubrication |
Oil mist |
"
|
|
*Engine is mass balanced
|
on assembly |
- |
| FLYWHEEL |
(For torque loading figures see table at |
end of section) |
| Max. run-out (at clutch face) |
.010 in. (.25 mm.) |
As '260'
|
| Ring gear interference fit |
.017/.034 in. (.43/.86 mm.) |
"
|
| Ring gear shrink fit temperature |
550 deg. F. (288 deg. C.) |
"
|
| LUBRICATION SYSTEM |
Color |
Color |
| Type |
Pressure |
"
|
| Pump - Type |
Four lobed rotor driving five internal lobed rotor. |
"
|
| - Drive |
Gear from camshaft |
"
|
| Normal Pressure (hot) |
35/55 lbs./in2. (2.4/3.8 kg/cm2.)@2,000 r.p.m. |
"
|
| Filter - Make |
Ford |
"
|
| Type |
Full-flow |
"
|
| Capacity |
1.75 pints |
(2 U.S. pints ; 1.0 litre) |
| Position of - Oil filler cap |
Front end of L/H rocker cover |
As '260'
|
| - Sump dipstick |
R/H side forward of generator |
R/H side forward of alternator |
| COOLING SYSTEM |
Color |
Color |
| Type |
Pump and fan |
As '260'
|
| Pump |
Centrifugal |
"
|
| Pump assembly dimensions (See Section A)- |
Color |
"
|
| Front face of pulley hub to pump housing face |
5.15 in. (13 cm.) |
5.43 in. (13.8 cm.) |
|
Editor's Note:
|
(Reported error. Is: 4.875 in.)*
|
(Reported error. is: 5.1 in.)*
|
| Impeller to housing cover mounting surface clearance |
.03/.05 in. (.76/1.2 mm.) |
"
|
| Pump drive |
'V' belt from crankshaft pulley |
"
|
| Fan - No. of blades |
4 |
"
|
| - Diameter |
14 in. (35.5 cm.) |
"
|
**
