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| Thoroughly confused about adding AC to a 3800sc engine (Page 3/4) |
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Darth Fiero
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SEP 30, 05:53 PM
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| quote | Originally posted by dcarrd:
I DO have the AC Clutch relay, what I dont have is any wiring attached.
As far as the instructions, I couldnt find them, Im sure you have the wiring details there. Can you point me to them on your site?
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http://www.gmtuners.com/files/index.htm
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Darth Fiero
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SEP 30, 05:55 PM
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| quote | Originally posted by dcarrd:
where 5 and 6 correct? |
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YES
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dcarrd
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SEP 30, 06:44 PM
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great thanks, what's the best gauge wires to use to do the new wiring on the relay and for the ECU?
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Darth Fiero
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OCT 01, 12:18 AM
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| quote | Originally posted by dcarrd:
great thanks, what's the best gauge wires to use to do the new wiring on the relay and for the ECU? |
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16-18 ga wires should work fine.
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dcarrd
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JUN 11, 01:07 AM
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Darth, I've decided to go with the grand prix ac compressor that attaches to the block directly. I also pulled the high pressure switch and had the ac lines done with a 7/16ths schrader valve but the high pressure switch doesnt fit. Seems to be threaded for a smaller port. Any ideas?
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Dennis LaGrua
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JUN 11, 08:53 AM
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| quote | Originally posted by dcarrd:
Darth, I've decided to go with the grand prix ac compressor that attaches to the block directly. I also pulled the high pressure switch and had the ac lines done with a 7/16ths schrader valve but the high pressure switch doesnt fit. Seems to be threaded for a smaller port. Any ideas? |
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The GTP (and later GM cars) A/C pressure sensor screws on a 10mm pressure port. I purchased the aluminum port and brazed it into the high side line near the firewall manifold. If you search the junkyards there are some compressor side GM fittings that will fit and that contain an integral 10mm port. ------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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dcarrd
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JUN 11, 09:46 AM
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dcarrd
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JUN 11, 03:00 PM
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I also found this which Darth makes reference above. Its a 3 wire pressure switch from a 1993 Grand Prix 3.1, GM part number 1572104/22599559
https://www.rockauto.com/en...3&cc=1255834&jsn=419
Only question would be, would I need to rewire the existing 3 wire plug?
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Dennis LaGrua
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JUN 11, 04:58 PM
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Its M10 but where would you attach it?------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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dcarrd
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JUN 11, 05:47 PM
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To the existing port on the high press hose
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