340doc
Well-Known Member
From what I've heard it doesn't change the amount of advance, just the rate. Is this so? Also which direction of adjustment does what? Thanks.
That's a great article, thank you!Here's a link to a How To article. How To Limit and Adjust Chrysler Vacuum Advance Cans
Thanks, I'm aware.Just a heads-up. Not all vacuum advances are adjustable.
Single point or electronics are "usually" adjustable. Most dual points are not.The advance seems to come in real quick on our 70 slant, causing it to ping. I watched it with a light. I'm hoping it has some adjustment available counter clockwise to slow it down a bit. Appreciate all your comments.
I knew that but what a pain compared to a Allen wrench. LOLIf a 3/32 allen fits in it is adjustable. Mike you can do the older dual points with springs and shims silly!
Thanks, if adjusting it doesn't help me I'll pull the dist and get the number. I do recall seeing a tag on it.Look at the number on the arm also you might have a high one that was changed at some point. Know the distrib number I can look it up.
Probably a remanufactured unit then, one of the problems with them they set a curve so it works on a lot of applications, some good some bad. Never come with a number for obvious reasons.Thanks, if adjusting it doesn't help me I'll pull the dist and get the number. I do recall seeing a tag on it.
I'm at 6 initial. All stock slant. 3.23 gear. 12 and 22 on the valves. I'm pretty much at sea level. This all seemed to start when I swapped over to electronic. I really need to investigate the used dist. to see where everything's at, starting with the V-can. Appreciate your input.You can figure the number out real easy, just set it loose, install it, evacuate the chamber and read the timing change. Badabing.
If you screw it in until it is really,really slow, on mine, it began to limit the amount.
You can modify the total by filing the stops. I run as much as possible because she needs the timing at cruise rpm to make the gas-mileage.
A slanty pinging? How much initial? What elevation are you at? What stall and gears?
Have you tried Trading away some initial, then bringing the mechanical in faster to compensate.
I guess you've tried the usual stuff like intake air temp,AFR, and exhaust.. And solid lifter cams are a little sensitive to the hot-lash. Mine runs pretty good at 013/023 Hot. Not so good at the spec .010/.020.......
HappyHotrodding