Turbo Manifold MK3 2017
2007/8. MK1 Turbo manifold was made with 34 mm stainless tubes. It had a too simple 4:1 collector with not the best flow. T25, GT2860RS and K16 turbos was used with the MK1 manifold.
2008/9 MK2 Turbo manifold I made it with a nice 4:1 collector and still 34 mm tubes. It was used with GT2056 with very good results. For higher power, the GT2259 was tested in the same manifold, but the manifold seems to limit the high-end flow. I logged both EGT and manifold pressure and concluded the limitations. With absolute 3 bar boost level, the manifold pressure was at 4.2 bar.
2017 I made the MK3 Turbo manifold with 37 mm stainless tubes and collector. This manifold gave the maximum flow and was tested with KKK K16 cut back and GT2259. The GT2259 was better in the low powerband and OK in the high.
At 2 bar it could deliver up to 285HP/430nm. Probably the best I can do on the 1600cc Ford Kent X-Flow engine from 1967. 54 years old design.
The GT2259 Mk3 configuration was made to see how much could be achieved and how fast on a strip. Though the special made BGH E8 (rated to 340nm) blow up in 3. gear where the torque out was 550 nm, also the ceramic clutch had problems. I was running the ignition timing very aggressive -19 deg at 4200 max torque and controlled the combustion with water injection and 99+2 octane fuel. But one day one piston burned, and I had to take the engine out and do a whole new set.
Then back to GT2056 on the MK3 with very god low rpm performance and reasonable power 234HP (5.100 but not at peak) /360nm at only 1.7 bar. Setting the boost higher only will lift the mid-range torque, also up to 430nm but not lift the top end power. But the G force is fantastic. Though to save the gearbox it stays at max 1.7 bar.
The MK 3 Turbo manifold was welded, as good I could, with back purging all over.