Mustang5L5’s progress thread - Boom

[FastDriver]

Or overfilled, and doesn't hit the pop-limit in cold weather. Also, these liquid lines today are often not to proper spec. They are often too restrictive. Confirmed this with a couple of folks who spend a LOT of time on foxes professionally.

I'm going to address this in Black Jack, where I have a measured pressure issue that looks like a clog, even when everything was brand new, and another airflow problem in the cab. I remember black jack's system being amazing. Now, it doesn't cover it in hot weather.

 

[Mustang5L5]

But 3-4 years later? It wasn’t even that warm when this happened. I’ve driven on 95+ humid days without issue. I think it was barely 80 when this happened. I also filled by weight, and pretty sure I stayed towards the low end

Liquid line was an NOS piece. I have a 2nd NOS unit as well.

Maybe I’ll address it later this summer. I did some more driving and tuning today. Working on my startup from cold start( well 80 degrees) to hot restart. Also did some more driving and pulling fuel out of the top end of the VE table. It’s getting there. As you can imagine lots of adjustment to the top end being made.

Car drives pretty nice. Still a bit rough around the edges but it’s getting there.

 

[85GTStangGuy]

....Need to source a new blowoff valve....

This it??

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[FastDriver]

Awesome. Yeah, those are valid reasons to doubt my guesses. Glad the tuning is getting there. Wish I had a NOS liquid line.

 

[WhiteCobra95]

How does the A/C on these cars work? Is the pressure mechanically regulated or does the ECU cycle the compressor from a high pressure sensor? I've never had to work with these systems but it would be good to know. Any overview you can provide would be great. I've worked on modern cars with both variable compressors and cycling systems, but I don't know how they did it with EEC-IVs.

 

[Mustang5L5]

There is no high pressure switch. It’s a mechanical relief valve. When you get over 450psi it just vents.


However looks like the relieve is not a one-time use thing if I’m holding pressure. Need to get my gauges on it and see how much exactly

 

[FastDriver]

Definitely not one time use.