confused on engine size

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Oct 11, 2012 | 02:23 PM

Uganda

Thread Starter

4wd Low

Joined: Oct 2012

Posts: 12

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confused on engine size

I am considering the purchase of a 2003 Discovery SE from a Japanese dealer. They list the engine size as 3900 cc. Everything I have read about this truck says this vehicle comes with a 4.6L V8. Shouldn't that mean the engine is 4600cc?

Oct 11, 2012 | 02:39 PM

br0keit

Rock Crawling

Joined: Apr 2012

Posts: 420

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From: Sayreville, NJ

Pretty sure its just a different crank that increases the displacement while everything else is the same, so a 2003 should have a 4.6L in it.

Last edited by br0keit; Oct 11, 2012 at 02:42 PM.

Oct 11, 2012 | 02:42 PM

Savannah Buzz

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Joined: Jan 2011

Posts: 16,322

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From: Savannah Georgia

D2 had two different engine capacities, "4" liter and 4.6" liter, same block, longer stoke for piston. Should say 4.0 or 4.6 in big casting on top of engine.

From shop manual:

Bore 94.00 mm (3.70 in)

Stroke:
4.0 litre 71.04 mm (2.80 in)
4.6 litre 81.92 mm (3.22 in)

Capacity:

4.0 litre 3950 cm3 (241 in3)
4.6 litre 4554 cm3 (278 in3)

Oct 11, 2012 | 02:42 PM

Disco Mike

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Joined: Apr 2006

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From: Denver, Colorado

Might want to look at that vehicles owners manual because they do use different size engines in Japan, I believe.

Oct 11, 2012 | 02:54 PM

Savannah Buzz

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From: Savannah Georgia

Just saw that in the RAVE:

Maximum power - 4.0 litre:
⇒ Low compression ratio 132 kW (177 bhp) at 4750 rev/min
⇒ High compression ratio - UK/Japan/ROW 136 kW (182 bhp) at 4750 rev/min
⇒ High compression ratio - NAS 140 kW (187 bhp) at 4750 rev/min

Maximum power - 4.6 litre 162 kW (217 bhp) at 4750 rev/min

So it would appear that a 4.0 was for Japan, 5 hp less that NAS version.