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jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
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Re:


Yeah Todd, I have seen that too but I wouldn't do it with this new clean diesel technology. I think it was done with the old diesels.

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6/Nov/2013, 5:33 pm Link to this post Send Private Message MSN Blog
 
DogTrail Profile
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X-TRAIL FANATIC
 


Date Registered: 05-2012
Location: Sunshine Coast
TOTAL POSTS: 481
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Re: Diesel Noise


It rather looks as if the usual diesel clatter is part of the parcel for that engine.

However, adding some insulation should help to keep that unwanted noise within the engine bay.

Once upon a time, every British car used to have an insulated bonnet.

That was for two reasons. 1. because it was cold in England and 2. because it made the engine sound quieter (just like a Rolls Royce.)

I've seen wool used (and some probably used asbestos) , but later models used glass fibre mats.

Perhaps you could quite easily insulate the underside of the bonnet with cut and shaped sections of sealed (say R 1.0 to R 1.5) fibreglass insulation batting ?

That alone should have quite a marked effect on the noise level. .

Last edited by DogTrail, 6/Nov/2013, 8:45 pm


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2011/12 Australia:- 2.5 litre petrol 4WD, Series IV ST, CVT : + some gadgets and cosmetic add-on's. Dirt, (it protects the paintwork) X-2429(c).
6/Nov/2013, 8:39 pm Link to this post Send Email PM   Send Private Message
 
cooch t31 Profile
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X-TRAIL HOLIC
 


Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
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Re:


Jalal people are still doing this to new diesels, I wouldn't though.

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Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

7/Nov/2013, 5:06 am Link to this post Send Private Message
 
Exywarrior Profile
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X-TRAIL FANATIC
 


Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re:


I'm surprised anyone would say the M9R is noisy. It is one of the quietest diesels on the market.
I detect a bit of fussiness in some perhaps?
Jump in a Landcruiser or Patrol and it's much noisier.

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Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
X-2099
7/Nov/2013, 6:08 am Link to this post Send Email PM   Send Private Message Blog
 
AugustusXTrail Profile
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X-TRAIL ENTHUSIAST
 


Date Registered: 07-2013
Location: Cowes Phillip Island Victoria
TOTAL POSTS: 123
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Re: Diesel Noise


Hi Guys, Augustus the X Trail here, I got a tad less rattly on decent fuel, Caltex Vortex Premium Diesel, Dad puts Flash Lube Diesel treatment in with every tank as well, this gives me better economy, cleans my injectors, keeps the DPF cleaner and also helps kill the rattles some what, but the biggest rattle killer was the installation of my Hi Tech Mufflers Cat Back Single system. This gave me a better throaty note, not a drone and its actually quieter than stock, just sounds better, and the only give up is a slight burble on start up and shut down. Economy also improved as well. Fit a chip and the extra fuel down low will also kill it. I've got a Chip My Diesel pro chip and untuned I picked up 25% TORQUE and 25 KW when combined with the cat back. More to come with tuning for sure.

My Turbo spools heaps quicker now and I really fly, but I'm much better down low as well, so much more tractable off road. I'm getting much better economy as well.

Don't hesitate, spring for the Cat Back and the chip and enjoy your NEW X Trail! emoticon

Have a great day and say G' Day to ya EXY for me, Augustus the X Trail, who now flys. emoticon
5/Dec/2013, 10:47 pm Link to this post Send Email PM   Send Private Message Blog
 
Exywarrior Profile
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X-TRAIL FANATIC
 


Date Registered: 10-2011
Location: Darwin, NT
TOTAL POSTS: 325
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Re:


If you are really worried about diesel rattle, try this new product: I have recently started using Liqui-Moly Diesel Clean and Boost. Find the product HERE.

This product seems to do everything it says it does...I have noticed considerably better response and less diesel rattle...not that the rattle ever bothered me, but I decided to give this product a go to give the fuel system a clean. The product works by increasing the cetane index of the fuel - in our case, it increases it to something closer to the level that European diesel is normally!

I'm also hoping that increasing the ignition properties of the fuel might make it burn more efficiently and reduce the need for DPF regenerations. Will advise how it goes.

But frankly guys, if you are worried about diesel rattle in the X-Trail then you might want to stand next to other Euro diesels some time and guess what: you'll hear the same thing. It's nothing to worry about.

I recommend this product - $29.95 treats 1000 litres of diesel.

Last edited by Exywarrior, 5/Dec/2013, 11:15 pm


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Mark T
2011 Series 4 T31 TL Auto - Twilight, factory towbar, factory mats, tinting, Cooper CS5s, cathodic protection, paint protection, yada yada...and no Provent
X-2099
5/Dec/2013, 11:03 pm Link to this post Send Email PM   Send Private Message Blog
 


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