CNC machined head porting at GMG.


Gone are the days of hand porting


We now digitize and equalize each cylinder chamber for optimum flow.


Here are some bare heads having the work done.


In addition you will see the heads have been machined for our upgraded head gasket and sealing system.










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997TT heads shown.




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Nice work! What does this cost and how much power should it add?

 

Nice work guys!

 

Nice! How much?

 

Hardcore.

 

great and clean ...

good work

 

Nice work!!!!

 

yeah great work, I am sure the car breathes a lot better. If I had to guess on a TT 20-40whp depending on mods.

 

damn man, just when you think you have the mod bug under control, some vendor has to post up another must have......

 

Although I posted in the other thread, this one seems to be getting more attention so I figured I'd ask here.

In addition to the flow bench numbers comparing the before and after flow numbers. Have you calculated the drop in compression as a result of the combustion chamber machining? I'm also assuming the valve sizes will now be larger, have you essentially copied the program from the RSR cylinder head and adapted it to this casting?