Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Need some advice on 3 angle valve job. (Civic vx)

robertwb70 · 02-23-2010, 01:45 AM

If you're not into high RPM performance then 30 degree valve seats could show measurable improvement. (you can still have the 3 angles, just the seat/ contact point is 30 instead of 45)

02-23-2010, 01:45 AM	#12 (permalink)
robertwb70 EcoModding Apprentice Join Date: Jul 2008 Location: Florida Posts: 135 1991 RED Metro 1.0 Auto - '91 Geo Metro Lsi Auto Team Metro 90 day: 38.28 mpg (US) 1991 3/5 2 door Blue/green - '91 Geo Metro Last 3: 42.6 mpg (US) Thanks: 54 Thanked 16 Times in 14 Posts	If you're not into high RPM performance then 30 degree valve seats could show measurable improvement. (you can still have the 3 angles, just the seat/ contact point is 30 instead of 45)