fooldall

Does anyone know the proper pressure for a 92 sc400? Right now, I have it at about 35 psi on the guage (middle "blue" range). I have searched and read several threads about it, but I'd like to know what the proper pressure is supposed to be... i read somewhere 40 psi, but I'm not sure..


Thanks, all!

VVT-i

I believe you converted your 92 SC to R134,correct?. It will take about 1.4lb to 1.5 lb.
Your low side pressure should be around 28-35 psi. Your high side pressure should be around 150 psi.

ki_soarer

im not sure on the 400, but on my 300, it was about 1.6lbs. its 80% of whatever the sticker under the hood says for R12.