lq4 turbo build will it hold up?

[TurboMic]

6.0 is great for boost, pistons are the weak link IMO. sounds like you have a great combo going. I dont use the 1:1 rise on the reg, it just complicates tuning, better to have a solid stable pressure. 13-15 psi is too high for stock pistons to live long in my exp... The 317 heads are better for boost b/c they have a thicker deck, L92 heads have a thin deck that is said to not take as much boost and cause head gasket failure. Good luck with the build

[AJ52486]

I see this is an old thread, but I have a question. I thought the 1:1 ratio on the FPR was to maintain the pressure difference across the injectors. If the pressure in the intake manifold increases x PSI, shouldn't the pressure in the fuel rail have to increase x PSI to maintain the same flow through the injectors?

[jetmech]

I see this is an old thread, but I have a question. I thought the 1:1 ratio on the FPR was to maintain the pressure difference across the injectors. If the pressure in the intake manifold increases x PSI, shouldn't the pressure in the fuel rail have to increase x PSI to maintain the same flow through the injectors?

That's what I thought

[casey23]

I see this is an old thread, but I have a question. I thought the 1:1 ratio on the FPR was to maintain the pressure difference across the injectors. If the pressure in the intake manifold increases x PSI, shouldn't the pressure in the fuel rail have to increase x PSI to maintain the same flow through the injectors?

Its all in the tune........