The Diesel
your answer is not easy. do you want ratio or compression pressure. I would guess you are talking pressure, which on a stock engine is around 155 lbs.
Verification on your question: Do head gaskets make cars lose pressure....hmmmmm, I think what your asking is.... Does a head gasket make an engine lose compression. - Correct?The simple answer is yes, it does, but it is by design. The amount the head gasket lowers the compression (or pressure) is built into the overall design of the engine. For instance, if you were to assemble the head to the block, without a gasket, you would raise the compression (pressure) slightly and potentially cause damage to the engine. This would most likely become apparent when you burn out a valve or burn a hole in the top of a piston.In general terms: - The greater the compression ratio, the bigger the explosion in the bore and the more heat that is produced.
Normal engine compression would be 100-125psi
It would vary between gas engines and how they were built, but most would fall between 8 1/2 to 1 and 11 to 1 compression ratio.
A 1:1 ratio is equal to 0 PSI. 14.7 PSI is equal to a 2:1 ratio. Just multiply your ratio by 14.7 to get PSI, or divide PSI by 14.7 to get ratio. This is only in a perfect cylinder where valves close exactly as the piston reaches the bottom and stays closed the whole way, and if no air bleeds out from the valves, or between the piston and cylinder wall. Not to mention the difference between if it's hot or cold. Plus, according to the math problem, if you had a compression ratio of 1:1, you would be pushing 14.7 psi. So there isn't any REAL way of telling an engines compression ratio without getting the specs for everything.
The total volume of all the cylinders would be the cubic inch (cid) or cubic centimeter (cc) displacement of that particular engine.
because a 1 to 1 comp ratio would not generateenough power to keep the engine to idle,the higher your ratio the more of a powerful stroke you will have. more power is good.a i c fuel engine will be between 9;1 to 11;1 race motors on hi octane around 14;1
the minimum is 100 PSI. The maximum variation would be 30% between the 4 cylinders.
The volume of an engine is called displacement and is typically measured in cubic inches or liters. An eight cylinder engine that could hold 1/2 liter of water (or air) in each cylinder would be a four liter engine. As the pistons move to the top of the cylinder in an exhaust stroke, they theoretically "displace" the 1/2 liter of air in each of the cylinders. The compression ratio is calculated during the compression stroke. If the piston occupies 90% of the enclosed cylinder space when it is at top dead center, the compression ratio is said to be 10 to 1, or 10:1. If the displacement of the cylinder was 10 cubic inches, it would have been compressed to 1 cubic inch.
To calculate the compression ratio of a 350 cubic inch engine with 56cc cylinder heads, you also need to know the engine's deck height, piston configuration, and the volume of the piston at top dead center (TDC). Assuming a standard configuration with flat-top pistons and a typical deck height, the compression ratio can generally range from around 9.0:1 to 10.5:1. For a more accurate calculation, you would need to measure those additional parameters.
It wouldn't necessarily run better at all - it all depends on your ignition and timing setup and compression ratio.
Depends on the year, cam, compression ratio. engine warm, 130-165psi, long duration lowers psi, overlap increases psi., solid cam with same duration would be higher than hyd. due to increased valve rate. All reading should be +/- 10%