Quote:
Originally Posted by SYCARMS
I know the older GY6 engines had a oil galley plug on top of the cylinder where the new ones don't. The performance cylinders don't have them as well. I was thinking of drilling and taping my cylinder to install a gauge. I once put a manual gauge on my origional Yerf engine and the pressure was 35 @ idle and would go as high as 55 psi at higher rpm. I was totally surprised at the pressure that tiny pump produces.
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55psi is a pleasant surprise! I ran one on the table top but it wasn't secured well and wasn't shrouded so I didn't buzz it up much over idle. The first time I saw a gy6 oil pump, my initial thought was this thing looks and works just like a chevy small block pump. There's a way to modify the center cog in a chevy that gives more volume. The man I got it from did the modification with a drimal so it's not that involved. I've still got one of those modified pumps stashed some where. I may dig it out to see whats been done. it may prove beneficial.