M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Engine + Driveline => Topic started by: gtatbrissy on August 21, 2009, 12:36:56 AM

Title: Head work
Post by: gtatbrissy on August 21, 2009, 12:36:56 AM

is there much point in porting or polishing...

Title: Head work
Post by: Boyracer on August 21, 2009, 06:57:31 AM

Yes.

Title: Head work
Post by: Sean_318is on August 21, 2009, 09:01:19 AM

http://www.popularhotrodding.com/tech/0610phr_cylinder_head_porting/index.html

This might help. It's a complex subject involving flow rates and aerodynamics. I'm no expert at all, but simple 'Air' is quite hard to move at high speeds. You can't just smooth everything and hope for the best; almost the opposite it seems.

Title: Head work
Post by: gtatbrissy on August 22, 2009, 12:04:38 AM

thanks