Hi all,

In a few weeks i will be rebuilding my EFI head, so thought i would start a thread with a few do's and don't, bit of an info hub for head shizzle,

Any way my plan is to clean up the ports and carefully match the manifolds up, enlarge the ports slightly (not much) as i want to maintain gas velocity and keep standard valves etc. The valve seats are going to be 3 angle cut and the valves will be back cut, this really improves gas flow at low/mid valve lift (apparently). Then the valve guided (bronze) will be cut back to the port.

Any info or ideas would be really really helpful, im going to steal some photos from a few other threads which should give an idea on port shape etc.

Cheers

Rob,