Tag: tuning

Volvo S80 2.4T Polyurethane Lower Gearbox Mount

My original gearbox mount was shot and I decided to replace the mount with a brand new reinforced polyurethane mount, which tightens up the shifting and allows for less engine movement, which is better for the exhaust.

One disadvantage, the cabin has added drone due to extra vibration. But the advantages outweigh the one disadvantage, so for me it’s a keeper!

Volvo S80 2.4T DO88.se Intercooler hoses

Closeup view

Volvo S80 2.4T PU Gearbox mount

Old vs New. The mount should not be able to move like that 🙂

Volvo S80 2.4T New vs Old Gearbox mount
Volvo S80 2.4T New vs Old Gearbox mount

And this is how it looks under the engine. Easy job, 2x 14mm & 2x 18mm nuts.

Volvo S80 2.4T PU Gearbox mount



Volvo S80 2.4T Hella Style Horns

Wanted to see if the Hella style horns would fit the S80. First I painted them white (they were green). Mounting them was easy, but the front looks messy with the horns mounted, so I decided to remove them again.

Volvo S80 2.4T Hella Horns mod (white)

Volvo S80 2.4T Hella Horns mod (white)

But this looks better to be honest…

Volvo S80 2.4T Front view



Volvo S80 2.4T ProPerfekt CBV / Diverter / Blowoff Valve

I actually wasn’t planning to upgrade the OEM Compressor Bypass Valve (CBV), but I am glad I decided to do so with this ProPerfekt piston type Diverter Valve (DV).

The rubber rings don’t leak (so much) boost, which means the power output is better (and faster) compared to the stock CBV. The stock CBV has a rubber outer ring (diaphragm) and a plastic ring on the inside (this is the flaw in the design).

The ProPerfekt DV is a known mod with the Renault Megane RS drivers, but I haven’t seen it before on another Volvo forum. The results are clear to me, the boost buildup is quicker, which means the car is faster. I would recommend this mod to anyone who has a TD04 turbo (who is still using the stock CBV). My S80 has the TD04HL-13T turbo, but will also fit the TD04HL-16T. Please note that the CBV I had fitted is quite new, so no ruptured diaphragm or something.

Volvo S80 2.4T ProPerfekt Diverter Valve
Volvo S80 2.4T ProPerfekt Diverter Valve
Volvo S80 2.4T ProPerfekt Diverter Valve
Volvo S80 2.4T ProPerfekt Diverter Valve

And this is how it compares to the stock CBV.

Volvo S80 2.4T ProPerfekt Diverter Valve
Volvo S80 2.4T ProPerfekt Diverter Valve
Volvo S80 2.4T ProPerfekt Diverter Valve