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Results tagged with engine
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user 11006
Questions about vehicle engines. Most engines in road-going vehicles are 4-stroke internal-combustion gasoline or diesel engines.
4
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1
answer
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Diagnosing a rhythmic engine noise
That's when I noticed a rhythmic noise that follows engine RPM. It basically sounds like a sewing machine. … It's very low compared to engine RPM. Which if it's one tappet would make sense, it would be 1/2 to 1/4 of the engine RPM. If it's 1/4 that would be roughly 2 per second and that sounds about right. …
- 9,326
24
votes
Accepted
What happens if I change the oil when the engine is cold?
I know when I do mine, I let the engine warm up, but not to full operating temperature. Even through latex gloves, full temp oil would burn my hand, and I can do without that. …
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9
votes
2
answers
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Follow up question on spark plug heat range
What does a plug running in the butter zone look like for a car engine, and also for a small two stroke engine like a snow blower or lawn mower? …
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16
votes
Accepted
What does a liter class engine mean?
The 1000cc is the displacement of the engine. That means the total volume of all combustion chambers which is the area of all the cylinders times the length of the piston travel in the cylinder. … Engine displacement may be measured in cubic centimeters (cc) or liters (L), but it has nothing to do with how much liquid the engine can hold. I hope that helps! …
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8
votes
1
answer
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What is spark plug heat range
I was watching a show and their project was adding a bolt on turbo kit. In the process they mentioned that they needed a colder spark plug.
What does a hot or cold spark plug mean?
What changes bet …
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0
votes
Problem starting Husqvarna Kohler 20 hp Gas Powered Riding Mower
Excessive oil in a 4 stroke engine is a very bad idea as several posts in here have shown.
I hope that helps! …
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4
votes
Help with spark plug stuck upside down in well
Just be careful you don't run the engine with bits of the ceramic in the cylinder. If it gets lodged in a valve or somewhere else inconvenient, you could cause really serious damage. …
- 9,326
22
votes
Accepted
What mechanical revolution is measured in "RPM"?
That means in a four stroke engine the shaft rotates twice (two revolutions) for every four stroke cycle, which means one power stoke for every two revolutions of the crank. … Since there are 4 cylinders, there would be 2000 sparks in that one minute across the whole engine.
And no, the piston does not produce the same torque on every stroke. …
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6
votes
Accepted
Cam Belt vs Belt Drive vs Serpentine Belt vs Fan Belt vs V Belt vs Timing Belt
As the comment says, looking at the web site you posted there seems to be a couple of flavors of engine for your car. … A timing belt is always toothed because a "V" belt can slip, and that would be catastrophic for your engine (if it's an interference engine, one where the valves will collide with the pistons if they open …
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8
votes
Accepted
How do I get more power out of a rotary engine?
The rotary engine is still a pump so opening it up helps it rev higher and make more power. Opening the inlet and exhaust ports is a big way to make more power at the engine. … Just be careful as you do this the engine will just make more power as the RPM increase. …
- 9,326
7
votes
Why or why not increase engine efficiency by running the car "fuel-lean" (using a turbo or s...
One other reason not to do this on your street car is that it will decrease your mileage (faster fuel consumption), and the additional power will put wear and tear on an engine that may or may not have …
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19
votes
Accepted
How do you get more horsepower out of a 1979 Mazda RX7?
In order to get the air into the engine, you have to open up both the intake and exhaust ports. … Unbolt it from the engine, and throw it away.
Replace that burn chamber with straight pipe. …
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10
votes
1
answer
7k
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What are the various kinds of tappets / lifters and the advantages / disadvantages of each
A previous question about tappets found here:
What are Tappets?
covers the basics of tappets. If we go the next step, here are my questions:
What are the various kinds of tappets / lifters?
What a …
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3
votes
How can head port volume affect the power curve of an engine?
As for how this affects the power curve the more air you get into and out of the engine the more power you generate. … All of this is dependent on the engine too since bigger displacement engines need more air, and so different tuning (cross sectional area, length, etc) of the intake and exhaust paths. …
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