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Old 05-15-2024   #1
jrd1990zr1
 
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Default r12 to r134a conversion question

I recall that I read somewhere that it takes less R134a to charge the system than R12. Does anyone have information on the amount of R134A is needed for a full charge in a 1990 ZR1 AC system?

Thanks
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Old 05-17-2024   #2
-=Jeff=-
 
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Default Re: r12 to r134a conversion question

I thought it was around 75% of r12
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Old 05-19-2024   #3
dredgeguy
 
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Default Re: r12 to r134a conversion question

I checked with Marc Haibeck as my system was changed to R-134a. His response:

The refrigerant is measured by weight. It should have 1 lb. 14.6 oz of R-134a.

Hope that helps
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