It's been a while since I last posted - work is still progressing....
Inspired by Bash's aircon revamp, I thought I'd get stuck into my own aircon project.
A few major changes were required - firstly the Lexus a/c compressor is on the left hand side of the engine as opposed to the right on the Lotus, and secondly there's not much space left in the engine bay, so the drier needed a new home.
I had to turn the condenser around so the input and output were on the left, and move it to the left - easy enough to flip the condenser, but the radiator cowl is designed for the condenser to sit on the right, and is molded around that - more fiberglass work was required to get it to fit.
The drier is originally located low down on the right of the engine bay, space that is no longer available to me. As everything now sits on the left, I had to find space on that side - the only place I could fine was in the headlight cavity, so that's where it has been relocated to.
I got very lucky and found an aircon shop very close to my office - they had everything I needed. Being close was useful as I went there many times to buy bits and to get parts made and then crimped. I ended up replacing almost everything except the evaporator (the "radiator" bit ensconced behind the dash that makes the coolth for those, like me, that are not fully aware of all the bits) and the compressor which came with the engine. I don't believe the condenser was original, and for the cost of a new one, wasn't worth taking chances on, so that was replaced. The low pressure switch and expansion valve were also replaced with new - I have no idea whether the old ones work or not, but they are buried deep in the dash and I wasn't taking any chances. A new drier was also bought and all the seals were changed.
Due to the changes in positioning of some of the major components, all new piping had to be run - these are made up of aluminium and rubber tubing with all the various fittings on the ends.
Below is the new layout:
The yellow arrow is the new low pressure line from the evaporator to the compressor - in the picture it had the wrong fitting on the end - this was replaced with a hose barb, and then a rubber hose does a half loop down to the compressor.
The orange arrow is the line running from the compressor to the condenser - this can also be seen in the second picture going into the radiator duct.
The pink box is the new position of the drier, the connection to this, from the condenser is the aluminium and rubber line in the second picture.
From the drier there is a rubber hose that runs through the body over the wheel well (blue line), and this connects to a bulkhead fitting (green circle), which links to the last pipe back to the evaporator - red arrow.
Below is the whole radiator ducting section which has now had many modifications and repairs (and is missing its air-filter).
Neil.