I have an '83 300sd that i bought for $300. It runs great, 80 mph, 30 mpg, on WVO. I use it to commute about 4hrs each week. The a/c compressor is shot and I don't want to spend more money than I paid for the car to fix it.
This is the plan:

Remove compressor for weight and remove condenser to alow better engine cooling.
Fill a cooler full of ice water in the front floor board, submerge a 12vdc marine bilge pump($16) into the water and pump water thru my evaporator and back into the cooler. The fan blowing across the evap should cool the car down. Does anyone see a problem with my plan?

I figure I can buy alot of ice for what a complete a/c sys. fix would cost.

I need to know where the best place to tap into the system for the in and out ports of the evaporator. Would it be at the exp. valve? If so which ports?

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1981 300sd
1983 300sd
1985 300d
1983 300cd
1991 350sdl