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Are all 4.0's created equal?
Posted: Mon Mar 07, 2011 8:28 pm
by Rob
Just a quick question for the V8 gurus.... is the 4.0 in a 1997 Range Rover the same beast as the 4.0 in a 2001 Disco 2? I am under the impression that the D2 4.0 is strengthened internally vs the early D1 and RR 4.0.... is that correct?
Thanks, Rob
2001 D2
Posted: Tue Mar 08, 2011 7:58 am
by red90
http://en.wikipedia.org/wiki/Land_Rover ... _Series_II
The 3948 cc V8 petrol version from the Disco 1 was replaced with the Range Rover P38 Thor 4.0 litre Rover derived V8. There was no actual increase in capacity over the previous 3.9 L engine. Although the basic design of the engine was similar it was actually quite different internally. It used a different crankshaft, had larger bearing journals with cross bolted caps and different con rods and pistons. The blocks were machined differently to accept extra sensors for the Gems and Bosch (thor) injection system and to allow the extra stroke of the 4.6 crankshaft.