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Per the title, I need some help identifying what AC system I have - Denso or MANA. The car is a 93 R1, and having done some searching, the FSM diagram looks like I have a MANA system, with 2 lines going into the top of the drier and the sight-glass an inch or so away. This also goes along with this thread where an R1 should have a MANA system
However, the MANA drier is black yet this one is silver. The hardlines also look like they've been converted to R134 (looking at the nipples)? I'm just trying to confirm my suspicions because I think this is the Denso system with an aftermarket drier; the condenser I have looks silver which again points to Denso
No bites? I'm leaning towards it being a Denso system with an aftermarket drier (according to searches these are readily available unlike for the MANA system)
You have a MANA system with a replacement drier (which should be replaced anytime it's drained & refilled). The dead giveaway is the sight glass is not on the drier, but on the line coming out of it.
You may have an aftermarket condenser though, as it does not look like a MANA condenser. It looks like a Denso condenser but they require some fitting magic to mate to a MANA lined car; as they have different sized fittings. I do see that your lines have been welded and changed significantly, so that may explain the Denso condenser on the factory MANA lines.
It has been converted to R-134a fittings.
Last edited by Copeland; Jul 18, 2019 at 11:50 AM.
