Can't ID my no tag 2100

[doc65]

Gronk,

I kinda like that idea for the clealiness aspect, but that'd suck(pun intended) given I have a brand new Pertronix coil & the cap/rotor/adapter combo to install already on hand.

Doc

[GRONK]

Replacing the diaphram on the advance costs more than replacing the whole thing though.  Just sayin' from experience.  I keep several HEI's on hand in the shop so when i work on customers Jeeps andfind a blown diaphram I can jst swap the whole think over quickly and inexpensively.  Never had a customer complain once I showed them what they gained and what they saved.

You could package those extra parts and make someone a heck of a deal on the Nest and be that much closer to the HEY as well.

[doc65]

Well it doesn't seem to be the vac adv diaphragm as I can squeeze the handle on my vac pump and get about 6 inchs and it seems to hold that, and while doing so I can watch the timing with a timing light and it changes like 4* or so.  Found several minor vac leaks, fixed those, I think, still got a serious flat spot on mild acceleration I do have that long accelerator pump, and am wondering about that, but it definitly does squirt.  I'm leaning toward the power valve...

[kajsdf]

saw the other thread, figured i'd post here too just to be sure

i had the same problem after i did my conversion -- it is probably your vacuum advance to distributor.  inside the port on the distributor is a little allen set screw that needs to be adjusted.  my issue was that the vacuum advance was basically fully on at idle.  i forget which direction does what, you can properly set when your vac advance kicks in.  took a lot of trial and error to get it right.