16V Integrale head flow test - as per Guy's book
Posted: March 21st, 2012, 10:31 am
My first post, so I hope I'm in the right area and not doing the wrong thing.
I'm building a 131 Abarth replica to compete in the Australian Rally Championship (Classic Category), and with the scarcity of good original 16v heads, I was granted permission to use a 16V Integrale head. Having purchased Guy's book and trying to absorb the wealth of information contained in it, we set about porting and preparing the head (also a rare item here, so terrified of destroying it) as per Guy's recipe.
We flow tested before and after, with standard valves and seats, and got 165 cfm - all I can say is ' wow', as we hoped for a big improvement, but I was amazed to get the numbers we did. I have no doubt this was due to following Guy's instructions - I usually build all my own engines, with the help of an older engine builder for all of my head work, and to his credit he studied Guy's book and was humble enough to take it all on board and follow the process to the best of his ability. It pays to listen, and thanks again Guy for imparting such great information - your book was the best money I've spent on my rally cars to date.
Alex Kovacevic
I'm building a 131 Abarth replica to compete in the Australian Rally Championship (Classic Category), and with the scarcity of good original 16v heads, I was granted permission to use a 16V Integrale head. Having purchased Guy's book and trying to absorb the wealth of information contained in it, we set about porting and preparing the head (also a rare item here, so terrified of destroying it) as per Guy's recipe.
We flow tested before and after, with standard valves and seats, and got 165 cfm - all I can say is ' wow', as we hoped for a big improvement, but I was amazed to get the numbers we did. I have no doubt this was due to following Guy's instructions - I usually build all my own engines, with the help of an older engine builder for all of my head work, and to his credit he studied Guy's book and was humble enough to take it all on board and follow the process to the best of his ability. It pays to listen, and thanks again Guy for imparting such great information - your book was the best money I've spent on my rally cars to date.
Alex Kovacevic