Sound / Heat Proofing

[Russ Kellermann]

Guys,


I recently drove a Land Cruiser 105 with the 1HZ motor (4.2D N/A - toyota's equivalent to the TD42). This vehicle is the first of its kind being built and first registered in 1998 (the end of the 80 series and beginning of the 100/105), so although it may not seem luxurious in todays times, back then it was the pinnacle of fine motoring (in my opinion). With this came the installation of sound / heat proofing on the underside of the bonnet as well as the firewall in the engine bay.

Question time:

Did the patrol wagon models of that time (TD42 / TB45/48), and till 2005, install this kind of proofing too ?

Reason:

The LC 105 was extremely quiet, and although i have taken into account that the engine note of the two motors may differ,and they do (ie: The 1HZ may be naturally quieter than the TD42) , it still seems to me that the proofing makes a huge difference, and i would like to source this for my patrol should this item have been installed in wagons all this time.

Please, advice welcomed.

Russ

[Ross]

Hi Russ,

My 1998 wagon has what can best be described as a sort of heavy duty duty felt on the under side of the bonnet. I have always assumed this to more to do with sound damping than heat. Does the pickup not have this?

There is nothing on the engine side of the fire wall, but in the interior the wagon has quite thick foam/under-felt beneath the carpets, which again is presumably for sound deadening.

Not sure if that helps you?


Ross

[Russ Kellermann]

Hi Ross,

Yes, the one on the bonnet will help, so i'm gonna try track one down second hand (breakers perhaps). The Pickup has vinyl flooring , which i like, it also has a heavy duty underfelt as you described, which adds to sound and heat proofing.

I wish i could find one that sits against the engine firewall as standard.

These items are not must-have's , i just thought that if they were available it would be nice to quiet down the cab noise.

[SRXy]

Unfortunately (or fortunately depending on your point of view) the TD42 is basically a forklift engine that has been modified for offroad use....it's not a quiet beast. Luckily I like my girls vocal....

[Russ Kellermann]

I like the sound of the TD42 , i'm in no way disillusioned as to its archaic design either. just thought it was rather pleasant in the LC 105 as far as cabin noise was concerned.

[Tinus lotz]

Russ
At least you can hear your beast is still alive and well!!!!

[Russ Kellermann]

Oh yes This motor actually feels better than it did when it was new, almost as if its loosened up a little, feels like the power (or lack of) is felt at lower rpm and runs smoother through the range. Engine noise is not overly so at all, i just thought that the felt was something only left off the pickups.

[Peter Connan]

Russ if you struggle to find the OE item, you can get adhesive sound deadening material from some motor spares places. If you want to put it inside the engine bay, just make sure you get the heat and chemical resistant type.

[Tinus lotz]

Bogey man told me the same thing ....he said his 4.2 n\a gets better with time!!!!!It is so good that he bought a 2nd 4.2 pick up!!! that man has now got 6 patrols in his fleet !

[Gerrit Loubser]

Russ, I was looking under the bonnet of a newish 4.2 TD (intercooled) pick-up and it had some insulation under the bonnet.