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Tango Charlie · 10-09-2011, 10:15 AM

You may get better airflow if you round corners and put the plug behind the opening like this;

I would also suggest spring loading the block to the open position as a fail-safe.

Also, maybe you could get a larger opening for the same actuating distance if you use a cone-shaped plug? I dunno.

10-09-2011, 10:15 AM	#115 (permalink)
Tango Charlie Deadly Efficient Join Date: Jun 2008 Location: Goshen, Indiana Posts: 1,234 Olivia - '03 Pontiac Vibe base 90 day: 36.01 mpg (US) R2-D2 - '00 Honda Insight 90 day: 58.81 mpg (US) Thanks: 134 Thanked 176 Times in 91 Posts	You may get better airflow if you round corners and put the plug behind the opening like this; I would also suggest spring loading the block to the open position as a fail-safe. Also, maybe you could get a larger opening for the same actuating distance if you use a cone-shaped plug? I dunno. __________________ -Terry