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Hey guys, going to bump this thread back up due to some of this info having been dead links now from the age of some of this thread. Hopefully my questions will also help others in the future. I’d been talking with Keith at EMPI and he helped me drastically on this but I hate taking up his time and obviously it’s the weekend now as well. So, I acquired an ‘88 911 3.2 a couple of months ago. It was a bank possession car so I got zero info on it other than just visually ID’ing parts as I come across them. I drove it home and it is a reliable car but it did run “rough” to say the least below 3,000 then would come out but surge at cruising RPM, it would also idle around 2,000. It has been converted to dual plug MSD and PMO swapped. Keith helped me take care of the high idle and that was simply the linkage not being adjusted right, doing that I was also able to balance them somewhat left to right and that helped things sooooo much. Started off with the left bank was drawing around 8 and the right bank was around 5 so they were way out of adjustment.
I have them averaged L/R now at 5-5.5 and is as mentioned, night and day from where it was when I first drove it.
My current issue and question, since PMO doesn’t have any diagrams or manuals online that I can find now, is how do you adjust the draw independent between carbs 1-3 and 4-6 of each bank? I’ve watched a few videos on webers and they show having a collar on them with set screws to adjust each one but I’m not seeing that on the PMOs, so I’m a little lost on that aspect. Like mentioned, I have them averaged L/R currently but that was simply to get it to run “better”, now I’m trying to actually go thru them and set them correctly by doing each one to 5-5.5 and then balance L/R. Currently have two on the L bank that are at 5.5 then the last one is at a 3.5, and then on the right I have one that is a 7, one is a 4 and the other is a 5 so they’re in desperate need of a balance front to back
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