What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

Serpentine belt conversion, where did these go?

JT88K5

JT88K5

1/2 ton status
 Premium
Joined
Dec 14, 2015
Posts
505
Reaction score
667
Location
Central PA
I purchased the accessory drive (pulleys, brackets, ac pump, alternator) from a junkyard so I didn’t get to see where everything went before it was removed. I have the two main brackets installed but have no idea where the two support bars belong. Here are pics of the support bars and where the install sits today. Any guidance would be appreciated. Btw, the parts came from a 94 with a 305. I am planning on changing the thermostat housing, didn’t get that from the 94.

IMG_3473.jpeg

IMG_3474.jpeg
 
Geometry doesn’t seem right, I just ain’t seeing it. . The 90 degree bend on the rod is what I’m having a hard time with. Does the bent end go to the intake bolt? Do both rods go to the AC side bracket. It’s over at the shop, I can’t go play with it until Monday. But after looking at the pics for a bit, I could see maybe one rod going from the front driver side intake bolt to the belt tensioner area on the AC side bracket. Do both rods connect to the same intake bolt? Here is a side view from the passenger side. Feel free to draw some lines on those to represent the general location of the rods. :dunno:

IMG_3476.jpeg
 
Outstanding! Thanks for taking the time to snap those pics. After Wes’s comment I could kind of picture the one going to the tension pulley. I don’t think I have space with the fuel rail/pf4 intake on the passenger side to make that one work.

In the side view picture I posted, can anyone tell me if I need to connect anything to the red connector on the AC compressor? Old compressor didn’t have that connection.
 
that red electric connector is a high pressure switch, not a bad thing to have in your control circuit. You add it in, it is in series with the low pressure switch to the clutch coil.
 
Yes. Good to wire in the high pressure switch. If you are running an electric fan, you will probably be OK. I have found that with a clutch fan, and a big radiator, the high side will go up too far, before the radiator builds enough heat to engage the fan clutch. This blew my high side line in half. Not good! I now have the high side switch wired in, and it is working to save the system from over pressure.
 
Running stock clutch fan from the 94 donor, Mishimoto 3 core aluminum radiator. Any suggestions on where to find a diagram to add the high pressure switch?
 
answer received via google AI. Does this sound correct? Pretty much what Wes said, only with more words.

To add a GM A/C high-pressure cutout switch, wire the switch in series with the compressor's power circuit (usually on the ground or control side). If pressure rises too high, the switch opens to kill power and protect your system. [1, 2, 3]

Wiring Steps (Standard Setup)
  1. Locate the Low-Pressure Switch: Find the cycling switch (usually on the accumulator or rear of the compressor).
  2. Cut the Circuit: Identify the wire coming out of the low-pressure switch that heads to the compressor clutch.
  3. Connect to High-Pressure Switch: Route this wire to one terminal of the high-pressure switch.
  4. Complete the Circuit: Run a new wire from the remaining terminal on the high-pressure switch directly to the compressor clutch's positive coil (or ground it, if it's a single-pin switch design). [1, 2, 3, 4, 5, 6]
 
You must log in or register to reply here.

Latest Posts

Top Bottom