PDA

View Full Version : Dry sump or not to dry sump



luc
07-22-2001, 02:16 PM
You don't need a dry sump system on the street.

There are 3 reasons to run a dry sump on a race car.

1/ oil pressure.
Many cars oil pick-up system are not designed to deal with a lot more than 1G and consequently you can loose oil pressure in turns and get air in the oil.

2/ Horsepower.
On a dry sump the oil pan doesn't hold any oil and there is no chance of the connecting rods of hitting the oil and foam it.
Also with a dry sump, the crankase pressure is negative and you can use "looser" rings.

3/Cooling.
a lot of BTU's are removed through the pump,hoses and tank.

I will realy doubt that you feel the difference in HP, at the most you will get 10HP without changing the rings.

$1800 is cheap.
A 4 stage pump,usually 3 scavenging and 1 pressure, is over $1000.
AN fittings and hoses will run at least $500 and a oil tank between $300 to $600 depending on size,design and brand.

Luc.

GTS Dean
07-23-2001, 09:23 AM
Be ready to lose the A/C and heater. They put the tank in the GTS-Rs right where the blower housing is.