The V8 Owners Forum -

Well I haven't got an SD1 sump but I believe it to be 6.6litres to max for a new engine.

I did think about using water to check the volume of my sump but fearred it going rusty. I took the plunge tonight, so to speak and did it, if it goes rusty I shall blame you!

Anyway, joking aside. On a level surface I measure in water until it was level with the dip stick hole in the horizontal baffle or windrige whatever is called and it took 11 pints and that is just over 6 litres. So add in the oil filter etc and it seems feasible that this sump is the same capacity or there abouts.

To confirm my previous calculations on total volume I proceeded to fill the sump completely, this took a further 5 pints make the total volume 8.82, I was only out by 0.6litre and this would be because I took external measurements and did not know the volume of the trap doors, etc.

I have ordered an SD1 dip stick and tube and I think that will prove to be the answer.

JSF55 wrote:The easiest way to compare capacities is to fill ur sump full with water, eerr, thats if it's off the car, and fill an sd1 one the same, direct comparrison ! john

Adam,

My understanding is that the volume of oil is there both to lubricate and cool. Referring back to the crank, the lubrication of the conrods and cylinderbores under the pistons is carried out by splashing. The scrapers referred to earlier are to reduce the air / oil movement in the sump and reduce the back pressure on the crank. If your sump is shallower in depth, and if the oil volume is higher, you run a greater risk of splashing, and a scraper may help in your case. Remember the oil pickup is in the sump and needs a relatively undisturbed pool of oil to operate effectively.
Oil volume in a cooling application is straightforward - greater volume, the greater heat carrying capacity. A possibility is to use a suitable oil cooler and stat, which will increase your oil volume, and provide additional cooling.

Just a few simple thoughts!

Ken

Thanks for te reply mate. This is going in a westfield and it is standard to have a remote oil filter and oil intercooler also. I am actually selling this sump as apparently the inbuilt windage tray is too close to the crank throws for a 4.6v8 anyway. I've been in touch with peter mulberry of fabrications of the same name and he has some westfield specific sumps for the 4.6v8, not cheap though!

KMCE wrote:Adam,

My understanding is that the volume of oil is there both to lubricate and cool. Referring back to the crank, the lubrication of the conrods and cylinderbores under the pistons is carried out by splashing. The scrapers referred to earlier are to reduce the air / oil movement in the sump and reduce the back pressure on the crank. If your sump is shallower in depth, and if the oil volume is higher, you run a greater risk of splashing, and a scraper may help in your case. Remember the oil pickup is in the sump and needs a relatively undisturbed pool of oil to operate effectively.
Oil volume in a cooling application is straightforward - greater volume, the greater heat carrying capacity. A possibility is to use a suitable oil cooler and stat, which will increase your oil volume, and provide additional cooling.

Just a few simple thoughts!

Ken