hi , i just joined and am the PROUD owner of a 74 450 sl i love the car and plan on keeping it forever. with that said i can live with the lack of power, i can live with the heaviness, heck i can live with the giant school bus steering whee but i'm having a hard time living with the gas mileage i'm wondering has anyone found a solution to this? dose anyone know or heard about a diesel motor swap

 

no need to be a *** i've owned a few cars and trucks with v-8's all bigger heavier with more hp then the 107 and they all got better milages if you're ok with giving your $$$ away, driving a car that gets 8mpg then knock your self out. i'm not i,d still like to solve the problem

 

I have 77 sl and I was wondering if you knew which relay goes to the fuel pump. I can't get power to the fuel pump and pump does not run even on auxillary power.Number one I need a pump but I still need power to the pump. thanks