UNIVERSAL SV50 HIGH PERFORMANCE RACING BLOWOFF VALVE [GFB]

Passar: Universal

Universal SV50 High Performance Racing Blowoff Valve [GFB]

The only BOV rated at over 300psi
(That's more boost than 13 stock Mitsubishi Evo Xs combined!)
GFB's New SV50; the highest flowing blow-off valve in the GFB range, capable of supporting IMMENSE horsepower!
What makes the SV50 stand out from the crowd?

Take note, diesel guys - the SV50 has the strength to withstand over 300psi without breaking a sweat! Try doing this with a diaphragm-type BOV!

The SV50's single-piece billet monoblock body design eliminates the need for fasteners and a separate cap, making it stronger and more compact.

The one-piece brass piston does not use a diaphragm. This ensures strength and reliability for the life of the valve.

Adjustability - other brands require you to pay extra for different springs to set the valve up to the engine's idle vacuum. The SV50 can be used on applications with manifold vacuum ranging from 5-22"Hg (2.5-11psi vacuum).
New High flowing valve able to withstand immense pressures
Suits all High Powered Turbo or Supercharged Engines

The SV50 uses a v-band mounting system that is compatible with existing common v-band flanges. The billet hinged clamp design is both easier to use and stronger than other flexible band-clamp designs on the market.

Why do we use a one-piece brass piston instead of a diaphragm like other brands?

For good reason - good quality diaphragms are typically constructed from silicone and reinforced with a nomex cloth, and are usually a"rolling" design that allows relatively long piston strokes.

However, this design has its limitations. The most significant being they are only designed to have pressure applied to one side, which is the underside. The nomex reinforcing is on the top of the diaphragm, so that the silicone is blown INTO the cloth. Applying pressure to the cloth side can result in the silicone material de-laminating from the cloth. Secondly, applying pressure to the wrong side of a rolling diaphragm causes the bellow section to collapse on itself. This creases the nomex reinforcing, and also causes friction and wear as the piston starts to move when the pressure changes to vacuum.

BOVs must deal with both pressure and vacuum, combined with the fact that competitors' products use wastegate diaphragms constructed the wrong way around for use in a BOV, meaning a diaphragm is not the ideal solution.

By using a robust and proven piston design, and carefully machined to close tolerances, the SV50 eliminates the diaphragm and the problems associated with them when used in a BOV. This is how the SV50 can be made to withstand such high boost pressures.

image-3The SV50 comes with two springs and an adjustment screw, with which you can set the SV50 up for idle vacuum ranges from 5-22"Hg (2.5-11psi vacuum). This range covers anything from superchargers or all-out race cars, all the way to street driven cars with stock cams and high idle vacuum.

Other brands rely on swapping springs to set the valve up to the engine's idle vacuum. Springs that you have to pay extra for.

The SV50's v-band clamp is machined from billet, but that's not the unique feature. Competitors' one-piece designs rely on bending the clamp material to open up the clamp, with difficulty. Repeated bending will also cause the material to fracture. GFB's 2-piece hinged design solves this problem by opening wide for easy installation and lasting longer than other designs.

Go Fast Bits - http://www.gofastbits.se



Go Fast Bits started back in 1997 designing, testing and developing GO FAST BITS. Today a wide range of innovative and high-quality blow-off valves, boost controllers, pulley kits and short shifters are available. All meticulously designed and manufactured from the highest grade materials. GO FAST BITS products are manufactured in Australia and GFB is constantly developing new and innovative products!

Bluepowers is the official dealer for GFB parts for Sweden. Currently we stock all popular products, so no waiting times!


What makes GFB blowoff valves different and better?
Our new TMS Turbo Management System don't throw your BOOST away but INCREASES IT BY up to 40%. GFB's Turbo Management System (TMS) parts offer multiple performance benefits over factory diverter valves. We looked at the concept named 'blowoff valve' and took this to a whole new level! Basically the main benefits are:

MORE POWER - BETTER RESPONSE - BETTER DRIVE ABILITY - GET THE SOUND OR NOT.



How to choose a BOV
With the vast range of GFB blow-off valves, questions rise 'Which blow-off valve is the best?' and 'Which blow-off valve should I use?'
The first question is easy to answer: There isn't actually a 'best' in terms of quality. All GFB blow-off valves use the same high-quality internal components. So, provided the right BOV is fitted for your particular vehicle, they all offer the same performance benefits of improved throttle response and reduced lag. The real question is: How do you select the valve for you?

The first step to decide on 'your' BOV, is whether or not you want to hear it, and if so, how much? The following chart lists the ""noise ratings"" of our blow-off valve range. The final decision will then be based on how much control you want over the blow-off volume level.


Boost Controllers
GFB boost controllers use a more consistent needle-valve bleed system, which brings boost on just as fast as any ball-and-spring system, and generally more quickly than a factory boost control system. On the productpages you can find a comparison of the GFB controller to other major brands, guess who wins this standoff? GFB!

A GFB boost controller will give you the added benefit of not only being able to adjust the peak boost level, but in most cases will bring the boost on earlier, resulting in more power throughout the rev range.

Pulley Kits
The reduction in rotating inertia (we've removed about 2kg by using 6061 T6 aluminum billet) means that the engine can accelerate much quicker during the times it is making very little power before the turbo spools up. The result is better drive ability off-boost and better acceleration, which is especially useful for those with large turbos that only make power in the upper rev range. The smaller size of the crank pulley under-drives the power robbing accessories so that the upper end of the rev range is less burdened, while still allowing them to operate properly.

Short Shift Kits
The GFB Short Shifter is the same height as the factory shifter, it is the actual distance that the gear stick moves between gears that reduced.

Very simple to install. All of the installation is done from inside the car, without having to jack it up and crawl around underneath. Only a few basic hand tools are required, and the necessary hex keys are supplied.
The maximum throw reduction varies for different models. Early WRXs had a particularly long throw, so the maximum reduction with the GFB kit is around 50%, whilst on later models it is closer to 40%. In either case, it is possible to reduce the distance per gate to about 30mm. Whilst it can go shorter, the shifting force becomes too great for comfort, and some of the shift feel is lost.



Download the GFB 2011 Catalog here:



Link to Youtube video about GFB in general:


Link to Youtube video showing a demo of the TMS Blowoff Valves on a GTR: