Thread: Silence Of The Landy

Hmm, sounds like time for a Disco II Bill ?


That's what Mum and her hubby did after having a 110 and 130 and having Central Australia as their playground.






In all seriousness you'll be hard pressed doing much.

Noise can be helped a fair bit by using some serious underlays as used in heavy machinery.

Wright off road in the UK make a nice looking acoustic mat, but it's too exxy for me when I've enquired, although they've sent several to Oz.



The Acoustic Mat System
Made from cast dense Polyurethane, this custom fit mat drastically reduces noise entering the operator cabin and panel reverberation.
Using technology from the industrial off highway vehicle market the Acoustic Mat System is manufactured to the same rigorous OEM standards.
This type of mat is normally found in construction industry equipment, diggers and excavators etc. or agricultural tractors. It is the industrial standard for reducing noise levels inside the operator cabin. It also provides a hard wearing durable surface that withstands the riggers of constant daily use. There is no other engineering solution


Products

Hi Wagoo

Just concentrate on one squeak at a time, when they have all been dealt with, then start on the rattles and so on, right up to the Airbag---- the passenger that doesn't shut up!

The quietest series one that I once owned, had carpet stuck everywhere and a soft top.
The loudest noise was the Road Trak Majors on the bitumen.

Cheers Arthur

Bundalene has some good threads on noise and heat insulation in a puma.

Offender90 on here is an acoustics engineer.

Vibration/harshness - not much you can do in a vehicle that has the body rigidly bolted to the chassis - apart from a suspension seat.

My experience with the 2a, on my recent trip Dubbo - Sydney - Canberra -Yass- Dubbo.

What I have done, which seems to have helped.

1. Door seals - make sure they do, and rectify as necessary.
2. All removable panels, such as floor panels and under seat panels, edge with 3mm x 20mm self adhesive neoprene foam. This seals out sound and stops rattles.
3. Cab deluxe trim - roof lining, door trim, floor mats.
4. Floor panels, seat box panels etc have a patch of closed cell foam 10mm thick attached to reduce drumming.
5. Parcel tray, tray behind seats, under seat toolbox etc all have rubber matting to stop rattles.
6. Check seal of gearlever boot and transfer and handbrake boots.
7. Seat between the bonnet sides and top of mudguards (very effective).
8. Regular check of tappet clearance
9. Oil springs
10. Check for holes round the seatbox and floor and seal. New pedal box seals.

What needs to be done:-
1. replace anti-rattle spring in the transfer lever.
2. Find a set of station wagon rear springs.
3. Less aggressive tyre treads.
4. Rebalance fan (engine vibration is markedly less with the fan belt off)
5. I suspect the bearings and probably shaft of the transfer case idler could do with replacing.
6. Seal at back of bonnet
7. Under bonnet insulation.

John

A Disco 11? Yes Rick but this is my final Landrover.
I obviously haven't tried the accoustic mat system, but I've tried acres of rubber matting, closed cell foam roof lining, firewall insulation etc and it doesn't make enough improvement to warrant the effort. I feel much of the noise is entering the interior via the metal to metal controls mentioned earlier.
I once had cable operated difflocks, and the difference in noise levels when diff was locked(cable tight) and unlocked (cable slack) was surprising. Probably improvements could be made by rubber bushing the gearbox, transfercase, crawler box, pto and hanbrake linkages so that noise generated by the mechanicals doesn't travel up all these metal 'telephone lines' into the cabin. a rubber bushed steering draglink would make some difference too but would give the RTA heart failure
Wagoo.

Originally Posted by isuzurover

Vibration/harshness - not much you can do in a vehicle that has the body rigidly bolted to the chassis - apart from a suspension seat.

It just occurred to me that almost every sedan on the road has a rigid body/chassis unit (monocoque) so the problem shouldn't be insurmountable.
Wagoo.

If the problem becomes too much to handle,I know someone that is prepared to put up with the noises and idiosyncrasies

Wayne

Too bad you aren't in Sinney - I have just what you need.