My car has been without a/c for close to 2 years or so now. I broke the dryer lines doing a koyo install, and subsequently CUT others out of the way...... yeeeeaahhh....dont ask.... i had just started working on cars.....*sigh*


anyway, thanks to many nice people from this board I have it ALMOST back together completely.

the problem im running into now, the low pressure side at the firewall connection does not hold any pressure. The line, even when fully screwed on, to the point where i feel like i will strip it if i turn it any further, has A LOT of "play" in it. the line can be move back and forth inside the nut. So the nut, when fully tight does not pull the end hard enough(or really at all, for that matter) to pull the oring against the firewall connection side.

little background. The car is a 95 with r134. The lines are from random used parts ive gathered from the forum. i have had Cold Hose in orlando change some of the ends to make things fit properly as ive went along. This one however threads on quite a ways by hand and then tightens normally with a wrench. so it appears to be the correct threads?

is there anything someone can recommend that would allow me to cut/fabricate/manipulate the line or nut so that i can use it....

....its hot in florida already lol

thanks

 

There are 2 different AC systems on the FD, the Nippondenso and MANA. The parts aren't interchangeable and the threads are different on the parts.

Could be the pipe has different threads and it will kinda/sorta thread on there and get tight, but obviously not tight enough to be working.

Dale

 

^ forgot to mention i have another of the same line in question with a different nut on it, and that one does not even begin to screw on.

any ideas as to how to just manipulate the one that does screw on to work? multiple orings? cut some the end off? cut some threads off the nut?

 

Reading this I thought immediately about what Dale said regarding Mana vs Nippondenso and my experience. I had the same issue when doing my A/C. Had lines fabbed and didn't bother to check if I was metric or standard. Screwed my lines in, felt good but never got sealed. doh!!

The Mana is metric, Nippondenso is standard and either way your lines would screw in for a little while, then get tight, but never far enough to actually seal the line/o-ring.

Being a 95 with R134, I'm guessing you are Mana and metric. Cold Hose Orlando would have fabbed standard lines unless you asked for something different. I've gotten lines from them and everything they do is standard unless specified.

I would confirm what your evap unit is (Mana or Nippondenso) then confirm fittings and either get new fittings on the ends of your lines to match or get new custom lines made.

Note your condensor will have the same threads as your evap. I took my evap to a shop and they welded new standard fittings on the ends. I purchased a new condensor online (My stocker was crap)

Hope that helps.

 

I wouldn't try to "make it work" by manipulating the threads and using multiple orings won't work.

Do it right the first time and save yourself time, money, aggravation.