Sound deadening your Land Cruiser Troopy? Read This First...

Quick Answer: Sound deadening a Toyota Landcruiser 78 Troopy reduces cabin noise by 3 to 5 dB at 110 km/h. The minimum package is the 70 Series Store Soundproofing Door Seal Kit ($87 to $137) plus 12 m of quality sound deadening mat applied to cargo floor, rear quarters and door cards. Total material cost $400 to $700. Install takes a long Saturday with the cargo area empty. The Soundproofing Door Seal Kit alone delivers the largest single noise reduction - it fixes the factory pinch-weld door seal that lets wind and dust into the cabin.

The Troopy cabin is one of the loudest in the 70 Series range. Wide flat body panels resonate, the cargo area amplifies what enters through poor door seals, and the factory pinch-weld rubber leaks wind and dust at every highway speed. Sound deadening is the most measurable comfort upgrade on a touring Troopy.

Shop Soundproofing Door Seal Kit

1. Soundproofing Door Seal Kit First

The single highest-impact upgrade. Replace the factory pinch-weld rubber with the 70 Series Store Soundproofing Door Seal Kit. Bulb-style seal compresses fully on closure, delivering up to 3.5 dB reduction at 110 km/h and dramatic dust ingress improvement. $87 to $137 depending on door count. Fits all 78 Troopy production years.

2. Sound Deadening Mat - Where to Apply

12 metres of quality mat (Dynamat, Car Builders, Stinger) applied to: cargo floor (4 sheets), rear quarters left and right (2 sheets each), inside rear barn doors (1 sheet each), front door cards (1 sheet each). Roll firmly to ensure full adhesion.

3. Tools and Materials

Utility knife, panel removal tool, J-roller, lint-free rag, isopropyl alcohol to clean panels before applying mat. Materials cost $400 to $700 total. Install time a long Saturday with the cargo area empty.

4. Best Done Before Interior Fitout

Apply sound deadening BEFORE any drawer system or bed platform goes in. With the cargo area open every panel is accessible and the work takes half the time it would take later. Retrofitting around an existing fitout doubles install time and reduces coverage quality.

5. Real Results

3 to 5 dB reduction at 110 km/h with the door seal kit and 12 m of mat applied correctly. Dust ingress dramatically reduced - most owners report essentially dust-free cabin on Cape York and Simpson Desert trips.

Browse 78 Troopy Accessories

Frequently Asked Questions

How much sound deadening does a Troopy need?

The Soundproofing Door Seal Kit ($87-$137) plus 12 m of quality sound deadening mat. Total material cost $400 to $700.

How much noise reduction can I expect?

3 to 5 dB at 110 km/h with proper application.

Should I sound deaden before or after the interior fitout?

Before. Halves install time and improves coverage quality.

ブログに戻る