Great F100 you are starting on. I agree, one project at a time. Just not enough time and money to work on several projects.
One at a time, but several at once. I've got few projects ongoing, but only actively working on one at a time (or none). I try to think of it as working them in stages. First stage of the 99 Ranger was the drive train swap. Now I'm moving to stage ?? of the F-100 which is getting it running and stopping reliably enough to get tuned. Then it'll be on to the Kia (2010 Forte daily driver) that needs some suspension maintenance work. Then either back around to 99 Ranger on suspension, or getting the 85 Ranger running.
It'll never end, but I'm going to keep rotating around doing a little at a time and trying to keep all of them roadworthy. Atleast for the ones that are driveable, the 85 is a long ways off in that department.
May not seem much but until I got all the front-end work done this was only a 60-mph truck. This truck has come a long ways. Fastest I have had truck and ran so smooth. Wind noise gone due to new window seals. Gas gauge works now but still needs a little tweaking but it is getting there.
Sounds like a good improvement. I was there not too long ago with the F-100, but I think it is sorted now. I've taken it up the interstate keeping pace with traffic, but that was a couple of years ago.
My first gen was a 2wd, but I don't remember a time when anything limited it's speed. Don't know what the top speed was, that 2.8 would bury the speedo in third. I had the tickets to prove it too. I might have been better off if it was a 60 MPH truck.
Worked on my AC this weekend. It would not operate. Cleaned some contacts, added some R134 and got compressor working. Still not blowing cold. Talked to a shop and after I swap evaporator and dryer, he will get my system going for me.
When I know I am getting into another area, I try presoaking all nuts and bolts ahead of time. AC is probably a couple of weeks away, but I will keep soaking them. Doing same thing with my Body Mounts.
If you were local I'd try to help you out with this, we just finished up redoing the system on my 99 and it works good.
First check to make sure your system is setup for R-134, I don't know of these used that or still on R12. I'd convert to R134 if it isn;t given the scarcity of R12. You'd have to look up what needs to be done to convert, all of mine with AC were already 134.
Given age of the system and not knowing how long it hasn;t worked, you'll definitely want to replace the dryer. I'd recommedn making the new dryer be the last new piece you install and install it right before you get ready to close the system up and take for servicing. It contains a dessicant pack and it will draw in moisture from the air the entire time it is open and exposed. If dessicant gets spent (soaked/saturated) the dryer is no good.
If it were me I'd replace everything else in the system that needed to be replaced and reinstall the old dryer. Then the day or morning before you take in for AC service open and install the new dryer. We did the service ourselves, the system was only opened for minutes after the dryer was installed and was at full vacuum shortly after that.
I'm assuming that your leak was determined to be the evaporator? If not I wouldn't change it unless you are starting fresh with everything.
Again given age of system and that you might be converting refridgerants, I'd replace all o-rings in the system. Old o-rings are liable to be a source of leaks now or develop them shortly after the system gets charged. Also if an old R12 system, they may not be compatible with R134 causing them to break down and leak later.
While replacing the o-rings change your orifice tube. It also acts as a system filter. Replacing it will remove a potential restriction, and give a clue as to condition of the system. If therr is black gritty stuff on the filter show it to your AC shop guy and figure on replacing the compessor and condenser (in front of radiator) as well. That is typically a sign of a failed compressor and the stuff gets into the condenser and near impossible to clean out.
Back in 2009 when I got a 95 probe on the cheap, the ac system was dead. Compressor shot. We did a full replacement (compressor, condenser, evaporator, dryer, and orifice tube) of that system at home and it worked great for the short time I had it. Last I saw of the car was 2 (?) years ago when I got the opportunity to buy it back, one of the few selling points listed was that the AC worked excellent. Seller didn't know I was a previous owner.
Hopefully that was understandable.