The Eaton TVS supercharger fitted to 5.0 Jaguar models is an excellent unit, which can be easily upgraded by changing the pulley.  This increases the driven speed of the supercharger, in turn increasing boost pressure by about 2.5psi, and allowing the engine to produce more power without the strain of revving higher.

Unlike on the 4.2 models which gave mostly midrange power increase, the 5.0 TVS cars yield benefit right through the rev range.  This is a very popular conversion proven by long term success on thousands of cars.

Powerhouse_Upper_Pulley_Upgrade

For 5.0 Jaguars fitted with the TVS supercharger we have a 7.5% / 60mm supercharger upgrade pulley which is proven through hundreds of successful installations on Jaguar and Range Rover cars.  The pulleys are available in our shop.

5.0 TVS Coupler Failure

This is a common problem with the standard factory snout coupler.  The metal damping spring of the coupler fails, creating backlash in the system which makes noise and in time will cause internal damage to the supercharger.  If your coupler fails and you need to remove the snout to replace it, there’s no better time to upgrade the pulley while it’s all apart!

Exchange Upgraded Snouts

As an alternative to buying just the pulley, we can supply rebuilt and upgraded Eaton TVS supercharger snouts on an exchange basis, with new bearings and upgraded pulley fitted, and a new upgraded coupler –  which won’t fail like the standard item.  Or, if you prefer to keep the car standard, we can supply a standard specification rebuilt snout.

Power Gains

Results will vary from car to car, but you can expect about 25bhp from changing the pulley alone, or about 50bhp from the pulley in conjunction with a remap.

The graph shows typical results from one of our trade installers, taking an XKR from 510bhp to 560bhp after remap.