I'm using the white GM orifice tube and for around 3 bucks it works great. I'm using the original hoses and had to trim off some leftover manufacturing junk so the fitting would go on and not crush the thing. But all n all not bad.
Dave B.
Location: Austin MN
Posts: 586
My VIN: 03500
I'm using the white GM orifice tube and for around 3 bucks it works great. I'm using the original hoses and had to trim off some leftover manufacturing junk so the fitting would go on and not crush the thing. But all n all not bad.
Dave B.
Location: Reedsburg, WI
Posts: 4,026
My VIN: 5180
Club(s): (DMWC) (DCUK)
You could go with this one. It comes with the QV head ( horizontal ports)
https://coldhose.com/products/new-sa...-v-belt-clutch
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DENNIS
VIN 5180, Frame 3652, STAGE II, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID headlights, SPAX user since 2009, Eibach springs, M Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, REAL MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.
Thanks guys, I decided to upgrade to the 7 piston 4708 compressor while I have the system in a state of discharge right now. Wasn't looking to spend extra money now that I'm 95% done with a frame-off restoration but as they say.... "now's the time".
https://www.acparts.com/product/new-...mpressor-4708/
Andy Lien
VIN 11596 Jan 1982 build - owned since Nov. 2000!
Total frame-off restoration completed 2021-2023
Photography and Backpacking is life.
Was Fargo, ND
Now Kansas City
Location: Reedsburg, WI
Posts: 4,026
My VIN: 5180
Club(s): (DMWC) (DCUK)
Even though the 4708 you chose comes with the QD style head. It is missing one thing. The High pressure safety relief valve.
https://coldhose.com/products/sanden...ompressor-head
Technically the Delorean system has the High Pressure Cut-out switch. The HP safety relief valve provides an extra level of safety.
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DENNIS
VIN 5180, Frame 3652, STAGE II, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID headlights, SPAX user since 2009, Eibach springs, M Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, REAL MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.
Andy Lien
VIN 11596 Jan 1982 build - owned since Nov. 2000!
Total frame-off restoration completed 2021-2023
Photography and Backpacking is life.
Was Fargo, ND
Now Kansas City
Location: Reedsburg, WI
Posts: 4,026
My VIN: 5180
Club(s): (DMWC) (DCUK)
Well it?s up to you, I did just for the extra layer of safety. It?s a CYA thing
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DENNIS
VIN 5180, Frame 3652, STAGE II, DM-eng Solid State Solutions (RPM Rly, Dm.Lt.Mod., Fan Fail Mod. , FAN Rly, HS.Rly) , HID headlights, SPAX user since 2009, Eibach springs, M Adj. Rear LCA's, DPNW poly-sway bar kit, DMCEU LCA Stabilizer link kit, DMCMW Illuminated door sills, Aussie Illuminated SS Shifter plate, REAL MOMO EVO Steering wheel, DELOREANA Extended View Side Mirrors w/ Heaters, DELOREANA LED Door Lights.
Location: Northern NJ
Posts: 8,582
My VIN: 10757 1st place Concourse 1998
If you don't put a relief valve in don't worry, if the pressure gets too high you will just burst a hose. While the relief valve is not required it is good to have. Some systems use a burst disc.
David Teitelbaum
Location: Tempe AZ
Posts: 131
My VIN: 4792
Club(s): (AZ-D)
The only Deloreans not equipped with a high pressure relief valve were the very early cars that haven't had the AC recall done. The HPR valve is either on a block on the condenser, or in the hub with the HP cut off switch near the receiver/dryer.
The HPR valve on the compressor head may interfere with your hoses. It messes with the clocking of the DGo hoses I've use in the past.
Be aware that many "pad style" heads have different size ports. I've seen them labeled as both QD, QC, or SJ. You'll need to slightly enlarge the ID of the smaller hole on a drill press. I can't recall the drill size at the moment.
The regular white or white/black oriface tube is the one to use. The variable oriface tube does not improve performance in my experience.
Last edited by Ethan Rode; 10-25-2022 at 11:45 PM.
Ohhhh damn you are right! I totally forgot I already have a high pressure relief in this wet/dry glass that came with my Hervey kit a long time ago. This picture is from before my frame-off but you can see the HPR on the side of the black thing. I should be good to go!
PXL_20220903_132158077.jpg
Andy Lien
VIN 11596 Jan 1982 build - owned since Nov. 2000!
Total frame-off restoration completed 2021-2023
Photography and Backpacking is life.
Was Fargo, ND
Now Kansas City
I ran into a little snag while putting this back together.
To review: I now have an SD7H15 (470 compressor which I believe has a QC head without the provision for a HPR valve. My hoses fit perfectly fine and leak-free to the compressor and the included head. However, I am going to replace my Hervey mess up front and I want to have the HPR valve on the compressor if that is possible.
I ordered the QD head from coldhose.com and fit it this morning to the compressor.
On re-installation of the hoses, I found the suction hoses fits normally but the hole in the head for the discharge side is slightly smaller than the hose requires. Taking some measurements, I find the old QC head has ID of 16.41 mm on both suction and discharge sides. The QD head has suction ID of 16.41 but the discharge is about 15.4 mm. The hose are both a 15.9 mm connection! Thus the discharge hose will not connect up with the QD head.
I reached out to coldhose this morning who said they "could not locate a compatible head with the HPR provision". They said the QD head is model-specific so it probably would not work in a custom application. I am reaching out to another Sanden distributor to see if they can figure something out.
Has anyone else ran into this? I'm not going to replace the hoses over this issue because I could always get a condenser block with the HPR in it and be done with it but if there is a different head that works that would really be ideal.
And, perhaps this information helps someone else in the future.
PXL_20221107_134521577.jpg
In this picture, you see the port size of my hoses - both S and D hoses are the same size
PXL_20221107_134623991.jpg
Here is the QC head that came with the 4708 compressor - both ports are equal size and work with my hoses. The QD head has a slightly smaller discharge port (about 15mm). Not good in my situation!
Andy Lien
VIN 11596 Jan 1982 build - owned since Nov. 2000!
Total frame-off restoration completed 2021-2023
Photography and Backpacking is life.
Was Fargo, ND
Now Kansas City