Manifold Vacuum Experiment

Bewy said
Post #64 might be able to do quotes....but does not understand ign requirements.
And the idiotic statements.
Smoother idle as a result of MVA might not show up on a dyno curve, but the engine can sure feel the difference....& so can the driver.
And it is not just me that that gives advice on MVA [ maybe they do not do quotes either ], but people much smarter than the the poster of post #64.
Maybe this will count as a quote; [ Yes, I know already posted, but not read by post #64 ]

View attachment 1716204998

#1. How much idling do you f**kin' do?

#2. Explain why you don't just turn the distributor for good idle, swap some springs, and run NO vacuum advance like so many hotrodders have done forever?

#3. Some of those articles (from what I can read, they're microscopic on my PC screen they way they're posted) say you want retard just off idle, but my question refers back to number 1 when I ask, why are you tuning your motor for a period of time when you're not using it?

If you REALLY want that much control over your timing, switch to EFI and be done with it. Chrysler tried every mechanical trick under the sun in the late '70's to do what you're trying to do (albeit for different gains), and eventually....computer control.

I ain't arguing any more. Can lead the blind to water....can't make 'em drink.

RustyRatRod said
Hay yall, all I'm doing is posting what I did and what the outcome was. If yall don't like that, just scroll on by, because I'm not arguing, I'm not debating. All I'm doing is reporting on findings. Wanna argue it up? Please start your own thread. That's not what this is for. Thanks.

So, last night, I decided to revisit Vixen and try this experiment on her. So first thing I did was get the timing light out and verify where I had the timing set, even though I already knew. Or so I thought.

Looking at the balancer with the light. I saw no mark on the balancer. Then, just before I took the light off, here comes the mark rotating around counter clockwise as the engine was idling. lol So I reached over and goosed it a little. The outer ring on the balancer almost came off the front of the balancer hub. So I yanked the radiator and fan and pulled the balancer. When I just LAID it on the work table, the inertia ring just FELL off. LOL How in the world it didn't fly off is anybody's guess and there's no telling how long it's been like that.

So I found out two things. I need another balancer and I don't have one, and I need an adjustable vacuum advance for a slant 6. Do any of yall know if somebody makes one? S I'm on the hunt for a balancer and an adjustable vacuum advance that I'm not sure exists. lol

See? See what manifold vacuum advance did to your motor? I told ya bad stuff was gonna happen!!! (At least YOU know I'm kidding about that)