Developed by Heiden Tuning in Holland, this Positive Crankcase Ventilation (PCV) valve allows expelled air out, but the reed prevents air re-entering quickly, thus creating a very small vacuum in the crankcase. A small power increase has been noted during dyno tests and the crankcase vacuum helps prevent crankcase pressure from pushing oil past oil seals and case joints. This valve ( 15-0677 ) is a fast seller with great pricing and easy installation.
Installation
First, drill a 1.5mm safety hole inside ( Figure 1 )
To be sure that no oil-mix blocks the valve, mount the valve so the inlet is on the top and the outlet is on the bottom ( Figure 2 )
You can also mount the reed valve vertically as shown ( Figure 3 )
You have now installed your Reed-Type PCV Valve.
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