Torque Factory / Brian Crower Valve Spring and Titanium Retainer Kit Audi 2.7t All

• Springs made by PAC Racing and are wound from high grade, super clean, chrome silicone alloy.  The retainers are CNC machined from 6AL4V titanium round stock.

• Light weight titanium retainers lower the valve train weight changing direction.  This allows higher RPM limits.

•  Higher closed seat pressure for consistent valve sealing at high boost pressures.

• The spring pressures were tested at the most common lift profiles for the S4, RS4 and 2.8 camshafts.

Intake:

Closed seat pressure @ 1.450” installed height 72 lbs / 140% over original.

Open pressure at .301” lift (OE S4 camshaft) 115 lbs / 44% over original

Open pressure at .341” lift (2.8 camshaft) 124 lbs / 38% over original.

Exhaust:

Closed seat pressure @ 1.300” installed height 72 lbs / 16% over original.

Open pressure at .410” lift (S4, RS4 and 2.8 camshaft) 204 lbs / 54% over original.