Abdulla Posted June 19, 2021 Share Posted June 19, 2021 (edited) Hello I’m thinking of making a rb25 build and want to know how much psi I can run safely, not max but what is safe, it will have arp head bolts, Greddy head gasket 87mm 1.8, titanium retainers and springs from kelford, single turbo’d precision 6266, kelford cams both 272, hks cam gears, walbro fuel pump, stage 3 spec clutch, r35 injectors and coil packs, and a fuel regulator. So I want to know max psi and possible horsepower, and I’m planning to cnc port the head when I install forged pistons and rods in the future, will also use a link g4+ or Haltech 750. Thanks! Edited June 19, 2021 by Abdulla Quote Link to comment Share on other sites More sharing options...
rk2334 Posted July 4, 2021 Share Posted July 4, 2021 with ps6266 you can run higher psi than stock turbo 12psi. I think its ok to run 24psi with limited rpm to 7k because of weak oiling system. Quote Link to comment Share on other sites More sharing options...
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