Specific Product Information
What's Included
- 1 x valve
- 1 x hose barb
- 2 x O-rings
- 4 x pre-load screws
- 1 x aluminium weld-on flange (installed)*
*Stainless steel weld-on flange available separately.
Part No: T9052
SV52 T9052 Diverter / Blow Off Valve
Warning
GFB recommends that only a qualified automotive technician fit this product.
This product is intended for racing use only, and it is the owner's responsibility to be aware of the legalities of fitting this product in his or her state/territory regarding noise, emissions and vehicle modifications.
GFB products are engineered for best performance, however incorrect use or modification of factory systems may cause damage to or reduce the longevity of the engine/drive-train components.
Instructions
Product Range Information
Features and Benefits
- Higher flowing AND more compact: capable of flowing upwards of 300psi
- Weld on full vent to atmosphere blow off valve
- Adjustable spring preload system
- Stepped bore technology, improves piston response time and sealing
- Adaptors available for v band connections
Use Cases
- Suitable for vehicles with a manifold vacuum ranging from 5-22 inHg (17-74.5 kPa, 2.5-11psi vacuum).
- Is not a direct fit valve, is suited for custom “racecar” applications, please contact us prior to purchasing to see if we do have a valve that would be compatible with your vehicle.
Self-troubleshooting Steps
How do I know what specific spring I need?
- The SV52 is designed to account for an array of different idle vacuum ranges produced by various engines. Please see the graph below to see what spring(s) are required for your vehicle:
Units
Inner Spring
Outer Spring
inHg
kPa
PSI
Low idle vacuum
5-8
17-27
2.5-4
x
Medium idle vacuum
8-14
27-47
4-7
X
High idle vacuum
14-22
47-75
7-11
x
x
FAQ
What do you mean by: “this is not a direct fit valve”?
The SV52 in most cases, will not fit the majority of vehicles that do not have custom intercooler piping. The SV52 is designed to include an aluminium weld on base, which is to be welded to the engines charge piping between the throttle body and the intercooler. If your vehicle is fitted with an electronically controlled diverter valve or a pneumatically actuated bypass valve, please contact us first as in most cases we do have a blow off valve that can either reuse your OE diverter valve or bypass valve flange.
I want to experience some fluttering; can I achieve this with the SV52?
No, the SV52 is designed to make a “whooshing” noise after coming off throttle and is not capable of producing a “fluttering” or “chopping” sound. This is due to the SV52 being able to rapidly flow a vast amount of air in a short amount of time. Fluttering, also commonly known as compressor surge, occurs when air is UNABLE to be vented after being blocked off by the throttle plate and travels back towards the turbo to create a “fluttering” or “chopping” sound. The SV52 actively aims to avoid this.
Tech Support and Warranty
Warranty InformationWe offer lifetime warranty on all of our products, so provided that there is a genuine manufacturing or assembly fault with your product – please send us some photos of what’s going on so that we’d be able to assist with either replacement parts or components. It’s also worth noting that we our lifetime warranty does not extend to those who have purchased our parts second hand.
Contact Us: https://gfb.com.au/contact-us/
If you are still having some trouble, then the next steps are to contact our Tech Support team. Videos, photos and a clear description of the symptoms you are experiencing would give us a better understanding of what is going on and how to resolve this issue as quickly as possible. Remember, we can’t see your car or product, so our diagnosis is only as good as the information you provide us.
