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Vacuum regulator for vac advance woes?

Sonny

It’s all fun til the rabbit gets the gun.
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I did some research and found a small inline vacuum regulator. Talked to their tech support and other than keeping it under 185 degrees (firewall or fender mount) this unit will regulate vacuum anywhere from 0-30 inches of mercury. It’s pricey at $50, but I ordered one and figured I’d give a try. This could eliminate the need to mechanically modify the vac advance’s travel for cans without the allen screw adjustment for those of us with too much cruise advance. It has two 1/8” npt ports. I’ll give it a go and let you know if it works.
Sonny
 
I've never seen one of those.....but, my guess is that it can't increase your vacuum signal & if it's tuning down your vacuum, it would do it by creating a vacuum leak. I hope I'm wrong.
 
I've never seen one of those.....but, my guess is that it can't increase your vacuum signal & if it's tuning down your vacuum, it would do it by creating a vacuum leak. I hope I'm wrong.
The idea is to be able to reduce the vacuum amount instead of welding up the vac can’s travel distance. We’ll see. I see your point about the potential for a vac leak.
 
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I just use little washers to limit travel under the slot at the stem. I vary the thickness depending on how much travel I want to take out. .012" is close to 1 distributor degree.
 
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