1990 Q45 high side refrigerant fitting size / adapter?

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Q451990
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1990 Q45 high side refrigerant fitting size / adapter?

Postby Q451990 » Sat Jun 26, 2021 12:31 pm

So at some point I'm going to replace the evaporator on the Q. I have R-12 on hand, so there won't be a conversion. I was looking, and the hoses for my manifold fit the low side port, but the high side port is smaller. I think I need a 3/16" - 1/4" flare adapter like this - can anyone confirm?

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Ryantzer
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Re: 1990 Q45 high side refrigerant fitting size / adapter?

Postby Ryantzer » Mon Jun 28, 2021 11:38 am

I'm not sure I understand - I thought R12 fittings were standardized, like R134 fittings are?

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Q451990
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Posts: 11269
Joined: Tue Jul 23, 2002 8:21 am
Car: 1990 Q45 - 114K, 2017 Toyota 4 Runner, 2004 Frontier M/T - 95K, 2012 Xterra (Mom's), 2017.5 Rogue (Inlaws)
Location: Columbia, SC
Contact:

Re: 1990 Q45 high side refrigerant fitting size / adapter?

Postby Q451990 » Mon Jun 28, 2021 8:58 pm

I would think so too, but mine has a smaller fitting for the high side than the low side. My gauges all have the same size fittings for both high and low. From my research GM and some other manufacturers did this.


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