The EX44 features a 44mm valve and comes standard with 15psi springs installed (1 x 10psi outer and 1 x 5psi inner spring). By removing one or the other spring, you can achieve base boost pressures of 5psi, 10psi, or 15psi. Also available is a 7psi middle spring, which can be used in various combinations with the supplied spring to achieve base boost pressures of 5, 7, 10, 12, 15, 17, and 22psi*.
5 psi = 0.34 bar
7 psi = 0.48 bar
10psi = 0.69 bar
12 psi = 0.83 bar
15 psi = 1.03 bar
17 psi = 1,17 bar
22 psi = 1.52 bar
The inlet flange I.D. features a tapered entry to assist a smooth transition from the exhaust pipe into the valve, and the seat I.D. is larger than other wastegates of the same size for extra flow.
When it comes to external wastegates, some things you want big, others you want small – like big flow, small size, right? GFB offers a range that are among the most compact external wastegates in their class, being shorter in height than their closest rivals without sacrificing flow.
All GFB wastegates feature an investment cast body made from 253MA chromium-nickel stainless steel, a CNC machined billet stainless valve, and all stainless steel weld-on fittings and hardware, whilst the diaphragm is nomex-reinforced silicone. All this adds up to a wastegate built to handle extreme conditions with reliability you can trust!
Most compact wastegate range on the market!
- Body, valve, seat and all mounting hardware is CNC machined from high-temp stainless steel
- Actuator housing CNC machined from billet 6061 aluminium
- Nomex-reinforced silicone diaphragm
- Internal shroud protects valve stem from excessive heat and prevents carbon-related sticking
- V-band clamp mounting system
- Made in Australia under ISO 9001
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