someotherguy
Even more awesome in person
Getting really close to possibly DD'ing my '93 regular cab C3500 7.4, and one absolute requirement for that will be fixing the A/C.
Since it's a '93 it's still R12. As I've mentioned in my build thread, the clutch connector is broken off the compressor. I've considered trying to replace the clutch with a used one but it may be a waste of time, as the A/C has been inoperative for a who-knows number of years; don't want to assume the compressor would still be any good.
It would seem the wise choice is to convert to R134a since I won't be heading down to the local parts house to get R12. With the R134a conversion it's been mentioned I should swap the condenser, and also wire in a high pressure cutoff switch.
Gonna try the "by the numbers" approach with my questions, LOL
1. What compressor would you go with? Another regular R4, or a scroll style R4? I've heard of idle cooling issues with the scroll, and this is super hot/humid SE Texas, but it's also a regular cab. Also - before you say Sanden, I've looked into it and so far haven't seen a bracket kit that lets me mount one on a TBI 7.4?
2. Link to best way to wire in the high pressure cutoff switch? I've seen several discussions and there seem to be some variations on the theme.
3. One would *think* I could just compare 1993 to 1994 model parts since that was the change from R12 to R134a, but I am concerned about getting the correct lines and such. Any tips?
I'm sure I'm overlooking something...it feels like I am, anyway.
Richard
Since it's a '93 it's still R12. As I've mentioned in my build thread, the clutch connector is broken off the compressor. I've considered trying to replace the clutch with a used one but it may be a waste of time, as the A/C has been inoperative for a who-knows number of years; don't want to assume the compressor would still be any good.
It would seem the wise choice is to convert to R134a since I won't be heading down to the local parts house to get R12. With the R134a conversion it's been mentioned I should swap the condenser, and also wire in a high pressure cutoff switch.
Gonna try the "by the numbers" approach with my questions, LOL
1. What compressor would you go with? Another regular R4, or a scroll style R4? I've heard of idle cooling issues with the scroll, and this is super hot/humid SE Texas, but it's also a regular cab. Also - before you say Sanden, I've looked into it and so far haven't seen a bracket kit that lets me mount one on a TBI 7.4?
2. Link to best way to wire in the high pressure cutoff switch? I've seen several discussions and there seem to be some variations on the theme.
3. One would *think* I could just compare 1993 to 1994 model parts since that was the change from R12 to R134a, but I am concerned about getting the correct lines and such. Any tips?
I'm sure I'm overlooking something...it feels like I am, anyway.
Richard