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PD HD Valve Spring Kit

PD HD Valve Spring Kit

Regular price $295.00 Sale

Rosten Performance upgraded valve spring kit for 8V PD TDI's.

  • This setup contains dual valve springs and custom titanium retainers to allow more valve lift.
  • Seat pressure 73lbs compared to the stock 57Lbs, an increase of 28%.
  • Open pressure at 10mm lift is 195Lbs compared to the stock pressure of 145Lbs, a 35% increase.
  • Make sure you measure your assembled heights ACCURATELY when setting these up as there is no room for error.
  • With10mm valve lift there is only 1.2 to 1.5mm before coil bind.
  • Minimum install height of outer spring 26.6mm when 10mm or less lift is used.
  • 10.5mm valve lift can be used by machining outer spring pocket down 0.5mm and to retain 75lbs/200lbs shim inner spring 1mm.