Recalls for 1971 Triumph Stag

robertknight16 posted a photo:

Triumph Stag (1970-77) Engine 2997cc V8 OC Total Production 25,877 (of which 6780 were exported to the USA)
Registration Number UKR 100 S (Maidstone)
TRIUMPH ALBUM
www.flickr.com/photos/45676495@N05/sets/72157623847263736...

Built as a 2 door 2+2, convertible or hardtop. Originally conceived as a short chassis open top version of the Triumph 2000, but ended with a monocoque and a V8 engine of 145bhp not shared with any other Triumph. Overdrive at first optional, becoming standard in 1972, and many with Automatics.

The car initially received an enthusiastic welcome, but suffered from engine reliability problems, attributed to several design faults, firstly a coolant problem caused by the water pump being set above the engine, if coolant was lost via via the expansion bottle, the coolant level dropped below the level of the pump resulting in loss of fluid to the pump and water pump failure. Water pump failures also occurred due to poorly hardened drive gears, which wore out prematurely and stopped the water pump. Secondly the choice of materials, the engine block was constructed of iron and the heads of aluminium a combination that required the use of corrosion inhibiting anti freeze all year round a point often not realised by owners or the dealer network, resulting in cases of electrolytic corrosion, so that corroded alloy debris came loose and was distributed around inside the engine. A third cause of trouble was the engine's use of long, simplex roller link chains, which would first stretch and then often fail inside fewer than 25,000 miles , even before failure a stretched timing chain could skip links causing valve and piston damage. Another problem with the cylinder heads was the arrangement of cylinder head fixing studs, half of which were vertical and the other half at an angle. The angled studs when heated and cooled, expanded and contracted at a different rate to the alloy heads, causing sideways forces which caused premature failure of the cylinder head gaskets. Subsequently these design and maintenance faults have been recognise and addressed by owners and a well maintained Stag is a very desirable classic.

During the production run modifications evolved and consequently in Stag circles different period car are referred to as Early, Mk I 1970, the Mk I (19711972/3), Mk II (1973) and Late Mk II (19741977), visually the Mark 1s and Mk.2s differed only in the addition of twin coachlines to indicate Mk.II variants.

Diolch am 85,098,712 o olygfeydd anhygoel, mae pob un yn 90cael ei werthfawrogi'n fawr.

Thanks for 85,098,712 amazing views, every one is greatly appreciated.

Shot 01.08-2021 exiting the Silverstone Festival 01.08.2021 Ref 149-471