Technical > Matt Shaff's Engine Shop

dry sump systems

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coupemerc:
I'm running a dry sump, Peterson tank, Peterson R4 pump, 50% crank speed, 4 pick ups in the oil pan, N&P oil pan and a Peterson in line filter. There is also a star mountain motor vac pump pulling from the valve cover. Will attach some pictures tomorrow

hemidakota:
So I gotta ask, Paul how much vacuum do you see in the engine? Coupemerc you have a very different set up, how much vacuum do you pull? I worked at weaver brothers as a kid and dry sumps pulled crazy vacuum back in the day but now a days it is not the same. I only want 10 to 12" unless I am missing something. I am not looking for every bit of power as for I am going to have to slow it down to do what I want. I just want to go over 200 mph some day.

Paul New:
I don’t have a data logger on my car so no clue

masracingtd1167:
If it's a wet sump you are just fine at 10 to 12 inches !

coupemerc:
My set up is making 13" going down the track. It made more on the dyno which is a bit puzzling? Seems to me the gasoline combinations are capable of making the big vacuum numbers. Tougher to seal the rings on methanol.

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