Rico

Could you please indicates suitable values for the two boost pressures settings on the individual Dawes valves? My 2002 GU Y61 has already “hand grenaded” and been rebuilt with EGR blanked off, catch can fitted, needle valve and single Dawes (giving 14 psi boost) in place, and an electric Boost Controller Switch and second Dawes valve supplied. The mod.s are working well and I would now like to fit and use the second Dawes valve, hence the question regarding recommended pressure settings. The vehicle is running 33” x 16” tyres, a 50mm suspension raise and spring/shock absorber upgrade with a 3” exhaust and front winch/bar replacement. It is used mostly for off-roads and also a bit of camper trailer towing (about 1500 kg). I have read quite a bit of yours and others output about this “interesting” engine with great attention, but have not come across much in the way of definitive guide lines on these pressure values involved. Many thanks for your continuing interest and output and I look forward to your reply. Cheers, Rico. ,