boingk said

...and the first head is done. The exhaust got more of a clean than an outright porting, with the 'speedbump' smoothed and reprofiled but not fully removed. The intakes have made do with only removing the upper protrusions (bottom of picture).

Stock for contrast:


Mild port match and reprofile:


Middle exhaust:


Outer exhaust:


Like I said, only a very basic job, but this is my first time doing anything to a cylinder head other than springs so I'm being deliberately very cautious.

Click to expand...