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09-11-2013, 09:23 PM
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#1 |
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GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
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A/C expansion valve ?
What's the difference between the "replacement style" and the "original w/ straight solid sensor"? I think I need to replace my A/C expansion valve and don't know which one to purchase.
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2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride   http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
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09-12-2013, 12:35 AM
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#2 |
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US Army Veteran
 
Join Date: Nov 2008
Location: Central Texas
Posts: 1,049
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Re: A/C expansion valve ?
The difference is basically weight (the original is a little heavier) and the length of the coil with temp sensor on the end.
The reproductions have much more wire coil to them, so you have to wrap them a few more times around the evaporator tube. Other than that, they function the same and there is no surprises when installing one. You will want to pick up some sticky tar (get it off Ebay pretty cheap) to cover/hold the coil/temp in place. It's really a straight forward swap out and direct fit. AC Delco part number: 155488 Four Seasons part number: 38652 Both available on rockauto.com for our trucks. On Ebay, do a search for: tacky tape http://www.ebay.com/itm/Tacky-Tape-A...8e3a3c&vxp=mtr (I just purchased this exact one from same vendor about two weeks ago) Hope that helps.
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1972 C10 Highlander - The making of a daily driver Last edited by BruthaMan; 09-12-2013 at 12:44 AM. |
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09-12-2013, 08:20 AM
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#3 |
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GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
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Re: A/C expansion valve ?
Will I have to split the evap core case in order to install it?
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2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
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09-12-2013, 09:09 AM
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#4 | |
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Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: A/C expansion valve ?
Quote:
I should say you stick it on there. You need that sticky tar stuff to hold it to the AC pipe coming out of the evap.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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09-12-2013, 02:28 PM
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#5 |
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GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
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Re: A/C expansion valve ?
So I should buy the replacement style?
Posted via Mobile Device
__________________
2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
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09-14-2013, 01:01 AM
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#6 |
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425hp409
Join Date: Oct 2008
Location: Prosper Texas
Posts: 841
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Re: A/C expansion valve ?
There are two styles of AC expansion valve bulbs, one type has a coil at the end like Napa #207307, and one that has a long fat type bulb like Napa #207300. I have found that the large bulb type works best. The installation of the bulb is critical, it must be attached to the evaporator outlet pipe securely. You must clean the outlet pipe down to bare metal, clamp the bulb to the outlet pipe with hose clamps, then wrap securely with AC tape, making sure that no outside air can get to the bulb.
Posted via Mobile Device
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Charles 68 SWB, Dad bought new, now 396 & factory ac 64 Impala SS, 409 425HP, 4 speed AC 64 Bel Air Wagon, 400 Small Block 57 Bel Air all original 283 w/Factory Air 77 GMC Sprint, 454/425HP 67 Olds 442, all original 90 ZR1 Corvette |
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09-14-2013, 10:27 PM
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#7 |
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GM ONLY BABY!!!
Join Date: Oct 2003
Location: Fort Wayne, IN.
Posts: 1,998
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Re: A/C expansion valve ?
Thanks for your help guys.
__________________
2 wrongs don't make a right, but 3 lefts do. 66 Chevelle Malibu 406ci, 573hp, 10.99@121mph 96 Chevy Silverado Z71 72 GMC 1500 Super Custom LS 6.0/4L65 on airride http://www.cardomain.com/ride/707879...mc-c-k-pick-up |
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