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First published 1995 November 12
Nuts, bolts and wrenches and dimensions plus weight of engine components
Here are some of the dimensions for the Alfa Romeo Spiders and other models. This is just to give you some clues about the tools you need. If you get a set containing the folowing sizes, you can do it all yourself.
10mm, 11mm, 13mm, 14mm, 17mm, 19mm, 21mm, 22mm, 27mm, 32mm and finally 36mm.
All dimensions are in millimeeter. The list is almost complete but I do appreciate comments, so please send me an E-mail.
| Crank front pulley nut | 36 mm |
| Head bolts | 19 mm |
| Cam shaft bearings | 13 mm |
| Exhaust manifold nuts | 13 mm early / 12 mm late |
| Intake manifold nuts | 13 mm |
| Top chain tensioner bolt | 14 mm |
| Cam cover | 10 mm / 11 mm |
| Oil pan upper part | 11 mm |
| Oil sump lower section | 10 mm |
| Starter engine | 13 mm |
| Alternator | 19 mm |
| Fly wheel bolts | 17 mm |
| Clutch | 13 mm |
| Gear yoke | 32 mm |
| Rear axle pinion | 32 mm |
| Main bearing nuts | 17 mm |
| Connecting rod nuts | 14 mm |
| Oil plug | 27 mm |
| Oil filter cartridge cannister | 22 mm |
| Gear box oil plug | 14mm in-6 |
| Differential oil plug | 14mm in-6 |
| Gear box nuts | 13 mm |
Engine weights
The 105 engine componets have the following estimated weights.
| Engine component/part(s) approx. figures of course | Lbs | Kg |
| Front cover w/ dist. water pump, gear, fuel pump, chain drive reduction gear. | 17 | 8 |
| Crankshaft, flywheel, clutch assembly, pulley, gears, nut. | 70 | 32 |
| Block w/ bearing caps, thick rear reinforcement plate, head nuts, etc. | 45 | 21 |
| Head w/ cam cover, tensioner, cams, etc | 52 | 24 |
| Intake manifold w/ rubber carb blocks, bell crank | 101 | 46 |
| Pistons, pins, liners, rods w/ caps & nuts | 14 | 7 |
| Oil pump | 2 | 1 |
| Sump and sump bottom | 15 | 7 |
| Misc timing chains, bearings, nuts, bolts | 20 | 9 |
| Complete engine incl flywheel | 250 | 115 |
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