Unity Motorsports Garage dives into the deep subject of Vacuum Advance for Distributors. We take a look back and discuss this history of Vacuum Advance and talk to the #1 authority on the subject.. David Vizard. He goes into detail why most get it wrong on the street… The Point is… If you have a Hot Rod and you drive it on the street… A Vacuum Advance is a must if you plan on getting ANY fuel mileage!
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Andy
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Thanx Andy , David has my Attention Brilliant Man👍
Excellent, thank you Andy and David.
I have been playing with cars since i was 10 im 55 now ive had this vacuum advance discussion that at times has turned into an argument with experts . ported vacuum needs to much initial advance to comfortably start a high comp engine . no vac advance just sucks the juice .I only ever run manifold vac its the only thing that works im glad i found your channel from watching UTG cheers from down under
I have to save this video so when I'm ready to put it use, I can have it to pull up. I really like what you guys got going on & what your sharing with us. I have several old ford 4x4s & have alot of time & money wrapped up in 460 builds & FE builds. Nun of them have a overdrive gear & all of them have 4.11 gear or lower. These things are a beast to travel with. They definitely go down the road with authority. But feul milage is bad subject. I've seen numbers as low as 6 mpg when I calculate my mileage. The one in question that I want to apply these techniques to is 466 that I first need to teardown do some repair do to a failed cam at 6000 miles. But I'm doing some things different from what I started with. The lunati voodoo is coming out and I'm talking with cam research about a custom grind that will increase power abit more & bleed alil cylinder pressure off becouse I was suffering from alil bit of detonation on regular pump 87 octane. So I got some work to do first but I defenatly would like to put effort into this beast to see what it can do. With it being what it is, im not expecting miracles, just better than what it was.
Just incredible! Almost wizardry, no word play intended!
Another great one. It seems like years ago we would play around with changing the weights and springs on GM distributors to tweak more advance out of distributor.
I'll tell ya what that really was the Ultimate vacuum advance video!!! Thanks to you and David
great video.vizard is the man i know he likes single pattern cams.another topic though.im glad sum 1 put up a video saying the benifits of manifold vacum and why u should use it.im so tired of all these little jerk offs on u tube making video,s saying ported is the way to go.
My foxbody mustang has a locked out MSD distributor and is terrible on gas, why do some race engines run with locked out timing? Is there any advantage to it? Ive been wanting to unlock it and run off vacuum advance to see what happens but I leave it alone cause the engine was built at a pro shop and Im sure they tuned and built it that way for a reason. It currently runs the 1/4 mile at 12.3 seconds@112mph.
Part I has helped me greatly! I am itchin" for part II.