Gain extra benefits by becoming a Supporting Member Click here find out how!
Classic Performance Products Classic Parts
American Auto Wire Classic Industries
Chevs of the 40sDanchuk Catalog
Hellwig Products IncPerformance Rod & CustomEcklers AutoMotive
Nu-Relics Power WindowsRain Gear Wiper Systems
Impala Bob's Bob's Chevy Trucks Bob's Chevelle Parts Bob's Classic Chevy

Username Post: Vacuum Advance- how is it supposed to work?
Valued Contributor
Posts: 3509

Reg: 04-15-05
04-06-10 06:16 PM - Post#1894089    
    In response to Jim_Elliott

Howdy, Jim, glad to see you posting.

NOPE, full manifold vacuum advance, more correctly referred to what it really is, a LOAD COMPENSATION DEVICE, should be on full manifold vacuum, IF THE ENGINE DOES NOT HAVE A FUNCTIONING EGR VALVE. If the engine DOES have a functioning EGR valve, ported vacuum sourcing is just fine, as that emissions laden engine is not set up for any kind of performance, nor good stock operation. It's as simple as that.

And, for ANY and ALL vacuum advances, there should be a positive stop on the pull pin, so the load compensator will NOT over time the engine, NO MATTER HOW THE ENGINE IS SET UP, STOCK TO HOT ROD.
NOTE: You are viewing an individual Post. View the Entire Topic
FusionBB™ Version 2.1
©2003-2006 InteractivePHP, Inc.
Execution time: 0.088 seconds.   Total Queries: 13   Zlib Compression is on.
All times are (GMT -0800) Pacific. Current time is 11:16 PM