Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Dry Sump shopping experience:
1. Compare - without doubt the biggest advantage that the Dry Sump offers shoppers today is the ability to compare thousands of Dry Sump at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Dry Sump? Wrong! If the Dry Sump is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Dry Sump then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Dry Sump? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Dry Sump and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Dry Sump wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Dry Sump then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Dry Sump site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Dry Sump, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Dry Sump, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
A
dry sump is a lubricating oil management method for four-stroke cycle and large
two-stroke piston
internal combustion engines that uses a secondary external reservoir for oil, as compared to a conventional
wet sump system.
Four-stroke engines are lubricated by oil which is pumped into various
bearing (mechanical)s and thereafter allowed to drain to the base of the engine. In most production cars, which use a wet sump system, this oil is simply collected in a three to seven litre capacity pan at the base of the engine, known as the
oil pan where it is pumped back up to the bearings by the oil pump, internal to the engine. In a dry sump, the oil still falls to the base of the engine, but rather than being collected into an oil pan, it is pumped into another reservoir by one or more
scavenger pumps, run by belts from the front or back of the
crankshaft. Oil is then pumped from this reservoir to the bearing (mechanical)s of the engine by the pressure pump. Typical dry sump systems have the pressure pump and scavenger pumps "stacked up", so that one pulley at the front of the system can run as many pumps as desired, just by adding another to the back of the stack.
A dry sump affords many advantages, namely increased oil capacity, decreased parasitic loss and a lower
center of gravity for the engine. Because the reservoir is external, the oil pan can be much smaller in a dry sump system, allowing the engine to be placed lower in the vehicle; in addition, the external reservoir can be as large as desired, whereas a larger oil pan raises the engine even further. Increased oil capacity by using a larger external reservoir leads to cooler oil. Furthermore, dry sump designs are not susceptible to the oil starvation problems wet sump systems suffer from if the oil sloshes in the oil pan, temporarily uncovering the oil pump pickup tube. Having the pumps external to the engine allows them to be maintained or replaced more easily, as well.
Dry sumps are common on larger diesel engines such as those used for ship propulsion. Many race cars,
supercars, and aerobatic aircraft also utilize dry-sump equipped engines because they prevent oil-starvation at high
g-force loads and because their lower center of gravity positively affects performance.
On the downside, dry sump systems add cost and complexity, and the extra pumps and lines require more oil, so maintenance costs go up as well.
See also
References
A
dry sump is a lubricating oil management method for four-stroke cycle and large two-stroke piston internal combustion engines that uses a secondary external reservoir for oil, as compared to a conventional
wet sump system.
Four-stroke engines are lubricated by oil which is pumped into various
bearing (mechanical)s and thereafter allowed to drain to the base of the engine. In most production cars, which use a wet sump system, this oil is simply collected in a three to seven litre capacity pan at the base of the engine, known as the oil pan where it is pumped back up to the bearings by the oil pump, internal to the engine. In a dry sump, the oil still falls to the base of the engine, but rather than being collected into an oil pan, it is pumped into another reservoir by one or more scavenger pumps, run by belts from the front or back of the
crankshaft. Oil is then pumped from this reservoir to the
bearing (mechanical)s of the engine by the pressure pump. Typical dry sump systems have the pressure pump and scavenger pumps "stacked up", so that one pulley at the front of the system can run as many pumps as desired, just by adding another to the back of the stack.
A dry sump affords many advantages, namely increased oil capacity, decreased parasitic loss and a lower
center of gravity for the engine. Because the reservoir is external, the oil pan can be much smaller in a dry sump system, allowing the engine to be placed lower in the vehicle; in addition, the external reservoir can be as large as desired, whereas a larger oil pan raises the engine even further. Increased oil capacity by using a larger external reservoir leads to cooler oil. Furthermore, dry sump designs are not susceptible to the oil starvation problems
wet sump systems suffer from if the oil sloshes in the oil pan, temporarily uncovering the oil pump pickup tube. Having the pumps external to the engine allows them to be maintained or replaced more easily, as well.
Dry sumps are common on larger diesel engines such as those used for ship propulsion. Many race cars, supercars, and aerobatic aircraft also utilize dry-sump equipped engines because they prevent oil-starvation at high g-force loads and because their lower center of gravity positively affects performance.
On the downside, dry sump systems add cost and complexity, and the extra pumps and lines require more oil, so maintenance costs go up as well.
See also
References
