 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Volvo Cars / May 2004Re-commisioning and converting a 740 aircon system
Hello all, Now that what we call 'summer' is nearly upon us in the alleged 'united kingdom', I'm once again having very stupid thoughts about trying to get my aircon working, I'm attempting to source a r134a retrofit kit, but the major problem I've got is that, a lot of the aluminium pipes have corroded/snapped, does anyone here know if the snapped ends once cleaned, can safely be joined with high pressure rubber pipe? Do the pipes have to be aluminium? Could 10mm copper be used instead to totally replace the rigid piping runs, obviously it would have to be bent round corners, but it would be cheaper and easier, the only problems I can foresee would be the flaring and sizing of the unions, and the probability of galvanic reactions where it joins ally components, but this happens anyway where the ally piping joins copper such as at the condensor. At the moment I'm just fishing around for ideas so that I have to pay as few thieving 'proffessionals' as possible, because everything always seems to cost 4 times as much here, than anywhere else, I.E. in the US the entire retrofit kit can cost less than what I would have to pay for any single simple volvo gasket and one or two simple volvo O-rings here. Rant off :-) Any and all ideas welcome, thanks in advance. Ken Phillips, Blackburn, EnglandHello all, Now that what we call 'summer' is nearly upon us in the alleged 'united kingdom', I'm once again having very stupid thoughts about trying to get my aircon working, I'm attempting to source a r134a retrofit kit, but the major problem I've got is that, a lot of the aluminium pipes have corroded/snapped, does anyone here know if the snapped ends once cleaned, can safely be joined with high pressure rubber pipe? Do the pipes have to be aluminium? Could 10mm copper be used instead to totally replace the rigid piping runs, obviously it would have to be bent round corners, but it would be cheaper and easier, the only problems I can foresee would be the flaring and sizing of the unions, and the probability of galvanic reactions where it joins ally components, but this happens anyway where the ally piping joins copper such as at the condensor. At the moment I'm just fishing around for ideas so that I have to pay as few thieving 'proffessionals' as possible, because everything always seems to cost 4 times as much here, than anywhere else, I.E. in the US the entire retrofit kit can cost less than what I would have to pay for any single simple volvo gasket and one or two simple volvo O-rings here. Rant off :-) Any and all ideas welcome, thanks in advance. Ken Phillips, Blackburn, England > Hello all, > [quoted text clipped - 5 lines] > can safely be joined with high pressure rubber pipe? Do the pipes have to be > aluminium? Can you find good used pipes at a salvage yard? Seems used cars are nearly worthless over there, how hard can it be to find cheap parts? > > Hello all, > > [quoted text clipped - 11 lines] > Can you find good used pipes at a salvage yard? Seems used cars are nearly > worthless over there, how hard can it be to find cheap parts? James, Thanks for your reply. You are quite right, I know someone who literally had to GIVE a mint 740 GLE turbo sedan away, the only thing wrong with it was a small oil leak in the turbo, I know this, because I was offered it; but couldn't afford to keep two cars, and couldn't bear the thought of breaking it; the person who actually took it to use, scrapped it mere weeks later. But to get to the point, over here it seems that aircon on the 700 series was limited to being installed on very few high end models, 700 series cars don't last long on scrap yards, they get found, cannabilised, and then cubed, very quickly, but, every time I find one with the required pipes etc, they are always corroded so badly, that the unions cannot be undone, without causing damage (the pipes seize to the nuts, twist, then snap), or the pipes themselves are close to perforation, especially where those cunning rubber lined metal straps work so well to trap moisture. God only knows why some bright spark chose a metal that loves to react with water (in the same family as magnesium, sodium and phosphorus), and makes brilliant galvanic cells when paired with steel, or copper, perhaps it was to cause problems and failure points. I have never yet found one that was still pressurised, but, have grabbed what useable bits there was. I need to get at, and change the O-rings to safely use r134a. I was looking at the IPD website yesterday, and found loads of aircon stuff for the 200 series, pipes, hoses, almost everything, but virtually nothing for 700's, this seems weird. My original query was to see if there was a safe workaround, so that I can use what components I can source, without paying the exhorbitant fees, that the powers that be over here allow to be charged. TTFN, Ken > > Hello all, > > [quoted text clipped - 11 lines] > Can you find good used pipes at a salvage yard? Seems used cars are nearly > worthless over there, how hard can it be to find cheap parts? James, Thanks for your reply. You are quite right, I know someone who literally had to GIVE a mint 740 GLE turbo sedan away, the only thing wrong with it was a small oil leak in the turbo, I know this, because I was offered it; but couldn't afford to keep two cars, and couldn't bear the thought of breaking it; the person who actually took it to use, scrapped it mere weeks later. But to get to the point, over here it seems that aircon on the 700 series was limited to being installed on very few high end models, 700 series cars don't last long on scrap yards, they get found, cannabilised, and then cubed, very quickly, but, every time I find one with the required pipes etc, they are always corroded so badly, that the unions cannot be undone, without causing damage (the pipes seize to the nuts, twist, then snap), or the pipes themselves are close to perforation, especially where those cunning rubber lined metal straps work so well to trap moisture. God only knows why some bright spark chose a metal that loves to react with water (in the same family as magnesium, sodium and phosphorus), and makes brilliant galvanic cells when paired with steel, or copper, perhaps it was to cause problems and failure points. I have never yet found one that was still pressurised, but, have grabbed what useable bits there was. I need to get at, and change the O-rings to safely use r134a. I was looking at the IPD website yesterday, and found loads of aircon stuff for the 200 series, pipes, hoses, almost everything, but virtually nothing for 700's, this seems weird. My original query was to see if there was a safe workaround, so that I can use what components I can source, without paying the exhorbitant fees, that the powers that be over here allow to be charged. TTFN, Ken > James, > [quoted text clipped - 4 lines] > two cars, and couldn't bear the thought of breaking it; the person who > actually took it to use, scrapped it mere weeks later. That's a shame, the 700 Turbo cars are modern classics, a great combination of comfort, reliability and performance. > But to get to the point, over here it seems that aircon on the 700 series > was limited to being installed on very few high end models, 700 series cars [quoted text clipped - 4 lines] > themselves are close to perforation, especially where those cunning rubber > lined metal straps work so well to trap moisture. Interesting, I hadn't thought of that, over here AC was standard on every 700 series car, as were power windows, I've never even seen pictures of a 700 without AC, though I did see one once with manual crank windows, strange indeed. Oddly, I've never had a problem with the aluminum pipes corroding, when my AC failed it was because the pipe had been rubbing on a bracket near the compressor from engine vibration over the years, finally it rubbed through completely and failed. The rest of my AC plumbing is virtually corrosion free after 15 years. I have seen DIY R134a retrofit kits being sold in Target (a US alternative to Asda) and was wondering if these kits are any good. Has anyone here tried installing one and do they work or are they crap? I find it hard to believe that this one kit would be suitable for every type of car, no matter the manufacturer. > Hello all, > [quoted text clipped - 49 lines] > > Ken Phillips, Blackburn, England |
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.