Ignition Timing Question, Rb30/25De + Turbo.

[nicksamaniac]

Hi all, I've built myself up an rb30 bottom end with an r32 rb25de head and running it with r33 rb25det harness and ecu @8psi. (soon to be power enterprise 800cc injectors and power fc)

All is good and it runs like a clock, but when I try to check timing via light and balancer marks it's miles off?

I've just set the timing at its original spot (where it's cas witness marks were on the rubber seal/timing cover)

And have spoken to 2 tuners and they've both had the same problem?

I measured the 30 balancer and is identical to the 25 balancer (bar the belt type)

Anybody had same or similar experiences?