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Universal Adjustable Boost Limiter Valve
Background: Before now, if your supercharger made too much boost at redline to fuel, the only choices you had were either 1) a fuel system upgrade or 2) a larger pulley to slow the supercharger down. The problem with the first one is the complexity and the expense and loss of street drive-ability; the problem with the second is the supercharger - now spinning at a slower speed - will come in later and produce less boost (and HP) in all ranges.
But now - 928 Motorsports LLC brings you a 3rd option: dump off the excessive boost you can't fuel, keep your midrange HP, leave your fuel system untouched, and save money. Turbocharged cars have a boost pop-off valve just for this reason, as it is entirely possible for the turbo to make more air than you can fuel - resulting in blown gaskets and engine damage.
Centrifugal superchargers have the same problem - and now they have the same solution! Now you can set your maximum safe boost level and keep the pulley you have, or even go to a smaller pulley to bring the boost in earlier, while just dumping the top end off when you have too much!.
Description: Expertly machined from red brass, with a type 302 stainless steel spring, Buna-N seal with a nylon disc. A high-quality piece that will last for many years. Pressure adjusts from 0 to 20 psi with the knurled adjustment screw. Temperature range is -15° to +250° F. Connections: 3/4" NPT male bottom inlet and top outlet vented to atmosphere. Can be polished.
Benefits:
- Bring your boost in earlier without making too much at redline
- Prevents over-boost, blown gaskets, and detonation
- Safer for your motor.
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