core shift picture

[acannell]

so in assembling BMF intakes where I bolt up the machined flanges to the head, I always notice that the amount of head port material that intrudes into the airway varies from port to port

so just to confirm its the head and not the machined flanges, I swapped the flanges from port to port and the intrusion remains the same...

things that make you go hmmm


http://i242.photobucket.com/albums/ff197/acannell/coreshiftr_zpsa9f3c013.jpg (http://s242.photobucket.com/user/acannell/media/coreshiftr_zpsa9f3c013.jpg.html)

[johnl]

Wow, goes to show, check everything.

[2.216VTurbo]

When I'm porting a 'motor' I make templates(from old plastic X-ray film sheets) including bolt holes for intake manifold, Head, exhaust manifold, turbo and swingvalve. IMO it is important to make sure that each 'downstream' component (as it relates to airflow) is slightly larger than the terminus of the upstream part. I don't know if it makes much difference but ensuring that there are no steps in the pathway makes me feel better:o