fwiw the hose connection on the fender is of a different size although the connection on the firewall looks the same. It looks to me as if you have all 3 hoses (firewall,fender,condenser) it would work. I do not see why that adapter fitting would even come into play.
JDM a/c drier relocation kit
- Thread starter Perroetaller
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The service fittings (the hi & low charging fittings) are different between R134a and R12 to prevent accidentally mixing refridgerants. R12 couplers are smaller, but you can get an adapter fitting to convert R12 couplers to R134a when updating an older car. Some R12 o-rings are not compatible with R134a, so they may need to be changed in some applications.
This is a service hose adapter to change your R12 a/c gauge set (shop service machine) to work with R134a and is not a part that is installed in the car.
I like this idea. Are the condenser and evaporator the same part number for the r12 and r134 systems? That would confirm the use of the r12 lines on an originally r134 vehicle right?
Called in the big-guns...sent a PM to Rex aka "1972FJ55" who owns Coolstream AC, a Mud vendor. Hopefully he will know of the right solution to our quest.
CoolStream
Steve
CoolStream
Steve
Don't loose heart. Worst case, and I mean worst case we would need to just use the fittings one each end of the system, patching-in the FJ version.
Look at the connector used in the setup from MOT which NAY has installed, this would be the type of coupler we would use in this situation.
Steve
Look at the connector used in the setup from MOT which NAY has installed, this would be the type of coupler we would use in this situation.
Steve
I have some part# and price info that I will post tomorrow.
I'm working on a couple things and I'll let you know 1st of the week what I can do.
I'd stay away from the compression couplers-just another place for a leak to happen-we can braze the lines together with a sleeve.
I'd stay away from the compression couplers-just another place for a leak to happen-we can braze the lines together with a sleeve.
seems like if you really wanted to be cool, yuk yuk, you could just pull a complete r12 system from a vintage 80 
and then get it filled (i won't give up mine). i mean heck, people have swapped worse stuff for less of a reason around here!!!
looks like a pita, will no shop bend AC tube and make you new lines? i'm sure i'm oversimplifying....
and then get it filled (i won't give up mine). i mean heck, people have swapped worse stuff for less of a reason around here!!!looks like a pita, will no shop bend AC tube and make you new lines? i'm sure i'm oversimplifying....
Alright guys, I was tired of all of the speculation and went out to the garage and started taking lines apart to compare. The big news is that while all of the 91-92 lines look like they will work, they actually WILL NOT FIT. The problem is the 91-92 lines are smaller in physical size, therefore none of the fittings will work. This sucks for me and all of you who were thinking about doing this swap.
The only thing I can think of doing is having Tubes-n-Hoses cut both of the firewall lines and braze the 91-92 firewall line side in place, easy enough. The biggest problem is the condenser connection is the wrong size. The 91-92 and later lines are vastly different in shape so those can't just be cut and welded. I don't really know what to do here aside from having a new line made from the condenser to the dryer. This turned into way more work than I was ready to take on.
This shows the difference in sizes of the lines.
Here is a pic comparing the two firewall fittings.
Dryers look pretty similar but the 91-92 is shorter. Perspective on this pic is messed up so it looks weirdly sized.
Condenser fittings
Firewall fitting is sized differently here too.
Sender thing is pretty much in the same place, no problem here.
The only thing I can think of doing is having Tubes-n-Hoses cut both of the firewall lines and braze the 91-92 firewall line side in place, easy enough. The biggest problem is the condenser connection is the wrong size. The 91-92 and later lines are vastly different in shape so those can't just be cut and welded. I don't really know what to do here aside from having a new line made from the condenser to the dryer. This turned into way more work than I was ready to take on.
This shows the difference in sizes of the lines.
Here is a pic comparing the two firewall fittings.
Dryers look pretty similar but the 91-92 is shorter. Perspective on this pic is messed up so it looks weirdly sized.
Condenser fittings
Firewall fitting is sized differently here too.
Sender thing is pretty much in the same place, no problem here.
KBahus, very good comparison with some disapointing results.. Back to the drawing board..
See my post above, #86, for the type of fitting which will need to be used to "blend" the two systems.
Essentially the lines will be cut and use compression fittings to seal, or have the lines brazed with a sleeve. One splice between the Condenser and Dryer, and one between the Dryer and the B Line which runs in front of the battery. This is what the kit from MOT does, and this is what we will need to do to make it work in our rigs.
Thanks Kbahus for bravely cracking your lines. Call a local AC shop and see if they can can source the fittings/braze the lines. Also, be sure that you use the pressure switch from the R134a system as it is different from the R12.
Not as simple as we all originally thought, but not that difficult either. In the end we lose that low-hanging dryer and have much more peace of mind on the next steep approach.
Steve
Essentially the lines will be cut and use compression fittings to seal, or have the lines brazed with a sleeve. One splice between the Condenser and Dryer, and one between the Dryer and the B Line which runs in front of the battery. This is what the kit from MOT does, and this is what we will need to do to make it work in our rigs.
Thanks Kbahus for bravely cracking your lines. Call a local AC shop and see if they can can source the fittings/braze the lines. Also, be sure that you use the pressure switch from the R134a system as it is different from the R12.
Not as simple as we all originally thought, but not that difficult either. In the end we lose that low-hanging dryer and have much more peace of mind on the next steep approach.
Steve
See post #75....
When they look they same on the outside, you have to try it to prove it. Unfortunately for me you were right!
I have some information for those of you interested in pursuing this conversion. I have a company that can build the lines to re-locate the drier to the battery box, using the later R134 fittings. Here's where I need some help. I need one set of both the early R12 ('91-'93) lines and the late R134 ('94-'97) to send him for samples. I've been shopping the MUD classifieds and Craigslist for some, but have not yet had any luck finding some at a reasonable price. The other part of this equation is they have a 25 piece minimum. I don't object to keeping some in stock, but if I could get commitments for say 20, that would be extremely helpful. As far as price, they need to have the lines in hand so they can see what's involved, but I think that they'll be reasonable. So the sooner I can get them both sets of lines, the sooner we'll have pricing and time-frame. Let me know if you have or know of where I can pick up the lines at a reasonable price. Best to email me directly rex@coolstreamac.com
Thanks!
Thanks!
When you get this figured out, I'm in for a kit. Either this one, or a genuine one, whichever is easier to get my grubby paws on.
Hi Rex,
I can send my earlier '91 set to you when I get back state-side in a little more than a week. Will also eMail to confirm.
Steve
Progress, I like.. Thank Rex & Steve... cant wait for the out come..
If for some reason Steven can't get the lines to you let me know and I will send out mine.
