I'm just porting my version 3/4 heads and polishing the combustion chambers at the moment, but I'm wondering if anyone has any pics of their own port/polish jobs to get some ideas about where to work at. So far I've taken casting blobs/seams out of the ports themselves, blended in the long side of the throat area into the valve seats (the short side was OK already) and started knife-edging the inlet port splitter. The combustion chamber is having a general polish, but I'm wondering whether to take the sharp edges off the spark plug 'island' in the middle.

As they say, a picture is worth a thousand words. Cheers!

 

CNCHEADS - Subaru Impreza

 

Nice one, that's exactly the one I was looking for! They're obviously v5 onwards heads but it looks like they've taken a fair bit of material out of the left and right sides of the chamber to make a much more rounded bowl. The valve guides are cut right down.

 

P1 Web Owners Club :: Warning, may contain nuts!

 

A bit more to do then...