DRY SUMP SYSTEM Special purpose engines are being used in installations where a i 1 dry sump oiling system is desirable or mandatory The follow ing tips should assist set up with any commercially available dry sump unit 1 If possible eliminate the engine oil pump completely On small block V 8 install a non bypassing in and out adaptor to the oil filter pad at the rear of the V engine On the large block M 4 install plugs in the rear oil cooler holes in the block and rear by pass valve position 2 The scavenger pump should have three times the capacity of the pressure pump preferably three stages 3 Two scavenger stages should scavenge the oil pan and one stage connect to the rear outside of the rocker cover on the predominant outboard side of the car This depends on the course and whether it is run clockwise or counter clockwise 4 Do not run scavenged oil through the engine oil cooler return it directly from scavenger pumps to supply tank A Use at least a l2 or 3 4 line r 5 Use a 12 or 3 4 inlet line to the pressure pump from the supply tank You may wish to install a coarse screen aircraft filter in this line to keep from getting contaminants into the pressure pump and pressure by pass valve 6 Pass the oil from the pressure pump through the engine oil cooler s and remote oil filter and then into the i engine It is no longer possible to use the original oil filter Make every effort to reduce restriction in the oil cooler circuit gg l Tg connect oil coolers in i series If more than one oil cooler is used they j should be connected in parallel i e tee the oil line r and pass the oil into and out of both coolers simultane ously 7 Do not try to run more than 55 60 PSI oil pressure hot This will aggravate oil aereation and scavenging Oil pressure over 55 PSI is not necessary for good bearing life 1 29 ll 16 70 i cl i J