Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - lean mixture?
Thread: lean mixture?
View Single Post
  #40 (permalink)  
Old 01-29-2013, 03:46 AM
jeepers creepers jeepers creepers is offline
Registered User
Last photo:
Join Date: Mar 2008
Location: Piedmont Italy
Posts: 211
Wiki Edits: 0

Thanks: 9
Thanked 3 Times in 3 Posts
Originally Posted by cobalt327 View Post
If you add initial, be sure to recheck the total timing (w/o vacuum advance, vacuum line plugged). Keep the total under 36 degrees for non fast burn chamber heads, 30-32 degrees for fast burn.

If you have no change when the vacuum advance is disconnected, you're either using ported vacuum or the vacuum advance unit is bad or the advance plate is hanging up. Try hooking it up to a vacuum port that has vacuum at idle (manifold vacuum).
Thank you, i have Edelbrock performer alu heads on so i believe it's better a little more advanced, are 36* ok? Because the total timing with vacuum plugged in is way more of that, i think was close to 45*.
What a 45* or too much total advance would cause to the engine?
Reply With Quote