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TiAL Q 50mm Blow Off Valves & AccessoriesTiAL Blow Off Valve Springs (Q / QR / QRJ)
TiAL Blow Off Valve Springs (Q / QR / QRJ)
Part # : TIALBOVSPRING
Price : $26.95 $27.83
TiAL® Blow Off Valve Springs are designed to work in all of their blow off valve models including the BV 50mm, Alpha Q, Q, QR, and QRJ valves. You should select the BOV spring pressure rating based on your engine's vacuum reading at idle, once the engine has reached operating temperature. However, the pressure ratings will vary depending on the model blow off valve you have, so please reference the chart below to ensure you are purchasing the correct spring for your application. The green spring should only be used on supercharged vehicles, on quick spooling turbos the valve can actually open briefly before raching the manifold, dumping the boost. TiAL® Blow Off Valves need a 1/4" inner diameter source that is direct to the manifold, smaller lines and additional T-fittings can cause delays in response time.
Safety Note Details:
Prop 65 Warning:
Q and QR Spring Rates |
Spring Color |
Spring Rate |
Use for Engine Vacuum Reading |
Green | 2 psi (0.14 bar) | SUPERCHARGER ONLY |
Black | 6 psi (0.41 bar) | -8 to -11 inHg |
White | 8 psi (0.55 bar) | -12 to -15 inHg |
Plain | 10 psi (0.69 bar) | -16 to -19 inHg |
Yellow | 11 psi (0.76 bar) | -20 to -21 inHg |
Brown | 12 psi (0.83 bar) | -22 to -23 inHg |
QRJ Spring Rates |
Spring Color |
Spring Rate |
Use for Engine Vacuum Reading |
Pink | 1.5 psi (0.10 bar) | SUPERCHARGER |
Green | 3 psi (0.21 bar) | TURBOCHARGER |
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