M54B30 Turbo - Valve Spring Recommendations

[e46turbotouring]

Hello from the UK!

Hoping to draw on all your FI knowledge on these platforms for recommendations on valve spring pressure.

I’ve got a built m54b30 running a pulsar g30-770 turbo. Over 22psi we have started to find a bit valve float in higher rpm and gears. The engine is running reprofiled cams and only spinning up to 6800rpm.

I’m planning on picking up a set of super tech valve springs and ti retainers.

From my research the m54b30 springs are 55lbs at approx. 34mm and super tech offer a 67lbs, 80lbs and 94lbs spring set.

I had planned to go for the 67lbs as this seem a reasonable jump up from the no doubt highly fatigued stock springs but have found some go higher again to 80lbs on a lot of the m50’s…

Greatly appreciate any recommendations,

Thanks,

Kyle

[conman]

80lbs will be up for the task