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Frequently Asked Questions

How much airflow (cfm) do I need to cool my engine?

FAQ
A 4 cylinder engine requires about 1000 cfm (1700 m^3/h), a 6 cylinder engine requires 1700 cfm (2890 m^3/h) and a small V8 about 2100 cfm (3570 m^3/h). To reach the minimum cfm required you may need to install two or possibly more fans.

What about airflow (CFM)?

Meyer Vacuum Systems | Air Duct Cleaning
There is a great deal of confusing and misleading information being circulated as "airflow data." Sometimes the airflow is stated as "free air" or is given without reference to the static pressure (SP). Both ignore the flow restrictions imposed by vacuum hose, filters and other system components. Other published rates have never been tested or verified using established industry testing protocols.

Can an engine get too much airflow?

K&N Frequently Asked Questions (FAQ)
No, an engine can only take in a fixed volume of air depending on the engine’s size. The more restriction that an air intake system (filter, air box, and tubing) causes, the greater the potential is for power and mileage degradation.

How do I determine how many CFM I need?

Fujioh Range Hoods
Contact cook tops manufacturer for specifications, or add individual burner BTU rating + barbeque, or wok to determine total BTU?fs. Keep in mind that the BTU rating given by manufacturer represents the highest possible BTU output of the stove or cook top. NOTE: Recommended range hood ventilation rates vary greatly and depend on the types of cooking performed. For professional style cook tops, we recommend following the cook top manufacturers advice to estimate the approximate CFM requirements.

Can I use the continuous airflow of a CF system to cool my electronics ?

Expo Technologies
We have never had our system tested to reflect cooling capabilities and we make no claim that the temperature in the enclosure will decrease. If cooling is an issue we recommend the purchase of our cabinet cooler.

How do I cool the engine during a Dyno test?

Frequently Asked Questions
Since a typical Dyno test generally takes less than a few minutes of full load operation, a flushette which supplies water to both sides is sufficient. For extended running or poor water supply conditions, something as simple as a small cattle watering tank (or even your test tank) can be used to supply engine cooling while operating the Dyno.

Will removing the MAS honeycombs increase airflow and engine power?

rd Generation Eclipse FAQ
If you need to ask this question, leave the MAS honeycombs alone! They're designed to straighten out the airflow so the MAS can obtain accurate airflow readings. Taking them out will reduce the air flowing over the MAS, which makes the readings innaccurate. A person with enough knowledge to be dangerous may reply "but all you're doing is reducing the airflow count, leaning out the engine a bit" -- which is correct to a certain extent.

Q:How do I keep my engine cool?

A:Keeping your engine sufficiently cool is needed for all the obvious reasons. VW engines like to run hot, and are more efficient that way. However, under high stress or race conditions, the factory system may not be sufficient. If you run too hot your power is reduced due to engine knock. There are several ways to aleviate this problem: 1) Increase heat transfer with a different cooling fluid or wetting agent. 2) Increase the cooling capicity of your car with a larger radiator.

What kind of cool stuff can I find with your search engine?

s.com - Help FAQ - 45 RPM Records -- Search for records, 45-...
The coolest! Since we have detailed information for every hit song in our online database, and since you can search by a variety of fields, you can do some highly cool stuff. Finding specific songs or songs by specific recording artists is easy. But how about searching for every song that has a specific word in the title...or every song that appeared on the Billboard charts on a specific date (birthday or anniversary, for example)..

What is the CFM rate?

AustinAir FAQ's
The CFM (Cubic Feet per Minute) is the measurement of how much air passes through the unit. For the HealthMate, the HealthMate+ , and the Allergy Machine™ the fan CFM is 400 cfm on high and 75cfm on low. The HealthMate Jr™ is 200 cfm on high and 50cfm on low.

What is the CFM(Cubic Feet per Minute)?

Frequently Asked Questions About SmartVent
It varies on wind speed but is equal or greater than the required exhaust vents on the market when used at the soffits. CFM is very hard to compare apples to apples because of all the different variables. Everything would need to be exactly the same for the tests: Outside and Inside Temp., Pressure, wind, same ridge vent, same shingles, same inside living space conditions, same sun rays, etc. etc. etc……..That is why we feel that the industry has chosen NFA to compare products.

What is cfm?

Frequently Asked Questions
Cubic feet per minute - a unit of measure used in air infiltration testing, e.g., "maximum .10 cfm per square foot of window area."

Okay, NO bull! How much lift and CFM do I really need?

Frequently Asked Questions
Lift is important to carry the dirt and moisture out of the carpet and into air stream. It's also no less important that you can actually move the wand after it contacts the carpet. Try this simple test to check your machine's lift and CFM. With your truck mount or portable running, attach the vacuum hose you typically use for cleaning. Go to the end of this hose and place the palm of your hand over the vacuum cuff and feel the pull.

What engine size do I need?

Frequently Asked Questions
This depends entirely on what you'll be doing with the scooter. If you plan to do much highway driving, it will be highly desirable to buy the largest engine you can find -- at least 200cc. Around town, the engine may be smaller for most needs. Stock 50cc models really are only best if you will have minimal interaction with automobiles, as they typically have difficulty maintaining speeds much above 35mph, unless they have been modified to go faster.

Do I need to change the chip or reprogram my engine computer?

Frequently Asked Questions
In the vast majority of cases the stock computer will work fine. Custom mapping of the fuel and ignition curves will maximize performance, fuel economy, and reduce emissions. The Apexi SAFC 2 air/fuel controller piggybacks to the stock computer and can be used to optimize the fuel curves under both light and heavy loads.

How do I know if I need a Cool Polymer?

Thermally Conductive Polymers for thermal management and EMI...
CoolPoly thermally conductive plastics help manage heat build-up in a device by spreading and dissipating the thermal energy. In applications where heat transfer is required, CoolPoly thermally conductive plastics are a cost effective solution.

What size room do you need to cool?

Whynter - Portable Air Conditioners FAQ
If you get a unit that doesn't have enough capacity to properly cool your room, it will probably run all the time and not lower the temperature as much as you would like. On the other hand, if you get a unit that is substantially too powerful, it will run for too short a time, quickly bringing the room to the desired temperature and the compressor will shut off.

Will I "be cool" if I suspend?

Suspension FAQ
Coolness" is simply an individual's perception of what peers will find to be a positive attribute. It is entirely possible that some people will think you 'cool' if you suspend, and there are certainly some who will think you are nuts and a freak. As the after school special says - being you is what's really cool. A suspension is a serious undertaking and your motivation should come from within, not concern about what anyone else might think.

a. Why haven't you included this one really cool search engine?

Meta Name Search FAQ
I probably haven't stumbled into that engine. Could you please let me know using the response form (or the Dutch one)? Thanks for your support.

More airflow means you are letting more dirt through, right?

FAQs
No. Filtration testing measures the percentage of dust retained before the filter reaches a terminal test pressure, often 10” of restriction above initial restriction. We use airflow as a simplified term to explain a more complicated physical process. The more precise description is restriction: K&N air filters create less restriction which helps an engine run better. An engine will only use the air it needs and our air filters do not result in an engine using more air than necessary.
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