Few issues Options

[Defgeph]

From the begining of my swap I've had low vac issues. I replaced hoses tightened everything up capped off holes.

I eliminated my AC and power steering. I have the hose for the AC idle up capped. Would I be better off capping the two PS vac lines?(current setup) Or should I connect them to each other with a hose. I'm close to having full vac, but its still alittle off.

Second thing, when I slow down and put the car into neutral the RMP's dip way below normal idle. After running at like say 650-750 rpm for a few seconds, it raises back to 1000 where its been since the begining of this project. Sometimes the car stalls, I looking for some suggestions or ideas.

I've checked timing, its set at 10d's.


Thanks guys

[alltracman78]

alltracman78.... i think what itchy was trying to say is that anything that leaks vac at idle will leak boost when you are boosting. so if the vac line for your powersteering is leaking at idle, it will also leak at boost. thats why we consider boost/vac least to mean pretty much the same thing.

meh, i didn't mean to split hairs.
generally a vacuum leak is a boost leak and vice versa

I was trying to split hairs.
That's what you have to do when you're trying to figure out a difficult problem.
While a vacuum leak generally will also be a boost leak, it's not ALWAYS so.
That's why I said what I said....

I found a hg/kpa calculator
http://www.shender4.com/pressure.htm
-99 kpa is 29.23 Hg and 14.36 psi. so, is that gauge giving you atmospheric pressure?

It's actually negative 29.23 in/hg and negative 14.36 PSI.
Which means while it's the correct conversion, it's not the right reading.
There is no way his engine is pulling 29 in/hg......


So bottom line, the first thing that needs to be done is get a correct vacuum reading.
Otherwise we're just pissing in the wind as they say.