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Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey

we all know defenders don't have excessive sound proofing...

so how come you don't hear the turbo like you do on the freelander ?

they are after all similar engines ......ie modern turbo four pots units so whats going on?

from my experience the freelander seems to be all turbo and the duratec.....well I don't know ?

1st Dec 2012 9:49pm

wslr

Member Since: 18 Jul 2010
Location: Wellington, Somerset
Posts: 581

Get a low restriction exhaust system. Plenty of turbo noise then.

2nd Dec 2012 12:07am

WWA

Member Since: 12 Aug 2012
Location: Northumberland
Posts: 197

2012 Defender 110 Puma 2.2 DCPU Orkney Grey

You could hear the turbo on my 2.4 Puma, standard factory set up. Can't hear it on the 2.2 though.

2nd Dec 2012 8:15am

Glynparry25

Member Since: 16 Feb 2009
Location: Miserable Midlands
Posts: 3015

2009 Defender 110 Puma 2.4 XS DCPU Tonga Green

It is a HUGE misconception that the 2.2 in the Freelander is similar to the 2.2 in the Defender. Basically the 2.2 in the Freelander is a Peugeot engine where the 2.2 in the Defender is a Ford engine

Extracts from Wikipidia:

Freelander:

DW12

The 2.2 L (2179 cc) DW12 has a bore of 85 mm (3.3 in) and a stroke of 96 mm (3.8 in). Unlike the initial DW10 designs, it was fitted with 16 valves from the beginning, and made its debut in the 2000 with the Citroën C5, Peugeot 406, Peugeot 406 Coupe and Peugeot 607, being used only in the larger models. In 2006 it was added to the PSA/Ford family, with power reaching 170 PS (125 kW). Land Rover currently uses this engine in the new Freelander where it produces 160PS. This is Ford's only current use for this engine, which is expected to power the next generations of both the Mondeo and Jaguar X-Type. A different 2.2L engine, Ford's ZSD-422 with a displacement of 2198 cc, will be used in the Peugeot LCV range of vans.

Defender:

2.2 Duratorq

In 2005, Ford introduced the Duratorq ZSD-422, a 2.2 L (2184 cc) turbodiesel for top-of-the-range versions of the Mondeo and Jaguar X-Type which produced 155 PS (153 hp/114 kW). This is unrelated to the PSA DW12 2.2 unit used in Peugeot and Citroën applications.

Applications:

Ford Transit
2005–2007 Ford Mondeo 2.2 TDCi 155, 155 PS (153 hp/114 kW) and 262 lb·ft (355N·m)
2005–2009 Jaguar X-Type
2011- Land Rover Defender
2011- Ford Ranger T6 & Mazda BT-50 2.2 TDCi 110 kW & 375Nm

Glyn

2nd Dec 2012 2:48pm

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

thanks for the info Gyln

I was talking at a much higher level....

ie both diesel and turbo charged with hp common injection (nothing more than that really) - still don't understand how one sounds so much higher pitches / turbo whistle compared to the other?

3rd Dec 2012 9:24am

LandRoverAnorak

Member Since: 17 Jul 2011
Location: Surrey
Posts: 11324

The devil is in the detail. The sound of a turbo in a Defender is probably swamped by road, wind and general engine noise. The Freelander engine is very quiet with the bonnet closed, so perhaps the higher frequency noise of the turbo spooling up is able to penetrate more easily?

Freelanders and Defenders are totally different vehicles in terms of structure, sound proofing, engine packaging and just about everything else, so why should the sound transfer from a vaguely similar engine configuration be the same? Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia

3rd Dec 2012 9:52am

Caterham

Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298

as hinted in the title.... I fully appreciate the vehicles are like chalk and cheese and for that reason I would have expected the turbo noise to be more obvious on the defender.

with the sound proofing I'd have expected not to hear anything from the freelander - and what can be heard I've have expected it to be heard even more on the defender. Perhaps as you've said its down to frequencies and perhaps high frequencies penetrate the sound proofing more easily ?

3rd Dec 2012 10:05am

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