Dry sumps pros and cons....

[Jonny Hotnuts]

I understand how a dry sump works but dont get why some pumps have multiple stages. For the hayabusa motor there are 2-3-4 stage kits available. So what is the advantage in running a 4 stage vs 3 or 2?

How much horsepower can be gained by running a dry sump?
Is the additional HP made because it pull crankcase vacuum?
Is there any cons to running a dry sump?

~JH

[panic]

..

[BALS aSALT]

in my opinion, if you have the opportunity to run a dry-sump, you better. there are no cons.

[maguromic]

JH, One thing to keep in mind is that all dry sump pumps aren't made the same.  In my opinion only a few will stay efficient, most will start falling off as the RPM goes up.  The good companies will be able to supply you a flow chart for the pump.  Running good vacuum will let you run less tension ring packs, but you may need piston oilers to get oil to the pins.  The way you make horsepower is by freeing up horsepower from getting the engine more efficient.

Are you thinking of mounting the oil pump in the stock water pump location and running a remote water pump?  Tony

[Jonny Hotnuts]

Tony, I already use an electric water pump and have the OEM pump blocked off.
The chain routing will hit the pump in the OEM location.
The issue is that I dont think I can use a water pump location sump pump without clearance issues.

However...


I can get this dry sump kit for about 1K complete.

http://www.bigccracing.com/shop/product.asp?idproduct=90

(listed the 938 sterling is about 1500$)

Downs Engineering makes a belt drive dry sump setup driven off the clutch side:

http://www.downsengineering.com/products.html

but their setup is well into 2500$


and....

If I could run any of them it would be the dry sump made by NLR systems:

1700$ for 2 stage 2K for 4 stage....



Also the busa engine uses oil jets on the pistons, mine are restricted to 50% BUT have a good deal more oil pressure/volume over OEM (and many guys run them 100% blocked)

~JH

[maguromic]

JH, have you looked at the Dailey pumps?  We used them on the Indy cars and they worked great and they do make ones for motorcycles.
http://www.daileyengineering.com/motorcycle.htm Tony

[Jonny Hotnuts]

Funny thing Tony if you look at the enlarged pic on the NLR site you can make out Daily Engineering on the end of the pump.

Now at least I know who is making Sebs pumps!!!
http://www.nlrsystems.com/2009/catalog2010.html