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69 Merc 390 Vacuum Advance
By AJ - 06/11/2006 12:34:44 AM; IP 65.185.168.111
I know this is not a Mustang, but it is an FE. I have been tinkering with my 69 Merc. The vacuum advance has two ports, The port furthest from the distributor (outside port) is connect to full manifold vacuum. The closest port to the distributor (inner port) is connected to the port on the carb, which is a timed port. Is this some sort of two way diaphragm or what? I have not really been all that interested in it before, but now it has my curiosity up...

What is the correct way for this to be hooked up?

Motor is a 390 2V, 10.5:1, in a 69 Mercury Monterey. Autolite carb. Pulls 19.5" of vacuum at idle.

Thanks everyone.
This thread, so far...
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Collapse <b>69 Merc 390 Vacuum Advance</b>&nbsp;-- <font color=#0000ff>AJ, <i>06/11/2006</i></font>69 Merc 390 Vacuum Advance -- AJ, 06/11/2006
Collapse <a href=../ForumFE/reply.aspx?ID=27613&Reply=27606><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor27613" onclick="return false;">RE: 69 Merc 390 Vacuum Advance</a>&nbsp;-- <font color=#0000ff>Royce P, <i>06/11/2006</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=27613', contentMargin: 60, icon: $('anchor27613') }); </script>  RE: 69 Merc 390 Vacuum Advance -- Royce P, 06/11/2006
Collapse <a href=../ForumFE/reply.aspx?ID=27614&Reply=27606><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor27614" onclick="return false;">RE: 69 Merc 390 Vacuum Advance</a>&nbsp;-- <font color=#0000ff>AJ, <i>06/11/2006</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=27614', contentMargin: 60, icon: $('anchor27614') }); </script>  RE: 69 Merc 390 Vacuum Advance -- AJ, 06/11/2006
Collapse <a href=../ForumFE/reply.aspx?ID=27619&Reply=27606><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor27619" onclick="return false;">I'll bet this is more 'distributor advance' info than you wanted...</a>&nbsp;-- <font color=#0000ff>Mr F, <i>06/11/2006</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=27619', contentMargin: 60, icon: $('anchor27619') }); </script>  I'll bet this is more 'distributor advance' info than you wanted... -- Mr F, 06/11/2006
 RE: I'll bet this is more 'distributor advance' info than you wanted... -- AJ, 06/12/2006
 390 2v A/T: basic advance = 6° @550 rpm; 28-38° @2K rpm [n/m] -- Mr F, 06/13/2006
Collapse <a href=../ForumFE/reply.aspx?ID=27631&Reply=27606><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor27631" onclick="return false;">Yes - pull 'em to set timing. Read these related posts (& threads)...</a>&nbsp;-- <font color=#0000ff>Mr F, <i>06/13/2006</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=27631', contentMargin: 60, icon: $('anchor27631') }); </script>  Yes - pull 'em to set timing. Read these related posts (& threads)... -- Mr F, 06/13/2006
Collapse <a href=../ForumFE/reply.aspx?ID=27637&Reply=27606><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor27637" onclick="return false;">RE: Yes - pull 'em to set timing. Read these related posts (& threads)...</a>&nbsp;-- <font color=#0000ff>AJ, <i>06/13/2006</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=27637', contentMargin: 60, icon: $('anchor27637') }); </script>  RE: Yes - pull 'em to set timing. Read these related posts (& threads)... -- AJ, 06/13/2006
 Best advance varies w/ compression, state-of-tune, fuel type, etc. [n/m] -- Mr F, 06/13/2006
 Here's another 'advance' thread that might come in handy... -- Mr F, 06/13/2006
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