Quick Answer: Why Does A Hemi Have 2 Spark Plugs?

Is the 5.7 L Hemi reliable?

The 5.7 hemi is practically bullet proof/reliable.

Introduced in 2002 for the 2003 model year, not much has changed in the design other than the VVT & MDS & intake manifold..

What is so special about a Hemi engine?

What Makes HEMI Unique? HEMI has a super-efficient combustion chamber, making it markedly more powerful than other engines. Unlike a flat head piston on the engine you might find in your lawnmower, HEMI pistons usually have a dome-shaped head with open, angled valves and twin spark plugs per cylinder.

What spark plugs should I use in my 5.7 Hemi?

7 Best Spark Plugs for 5.7 Hemi [Reviews & Guide]2.1 1.Mopar Chrysler Jeep Dodge Ram 5.7 Liter HEMI.2.2 2.Bosch 8162 Double Platinum Spark Plug.2.3 Features & Benefits.2.4 3.ACDelco 41-993 Professional Iridium Spark Plug.2.5 4.Champion RE14MCC4 (570) Copper Plus Replacement Spark Plug.2.6 5.Autolite AP5263-4PK Platinum Spark Plug.More items…•

How many spark plugs does a 6.4 Hemi have?

16 spark plugs6.4L Hemi Features 16 spark plugs, two per cylinder, for improved combustion efficiency (performance and fuel economy) and reduced emissions.

How many miles can you get out of a 5.7 L Hemi?

5.7 Hemi engines are good for 250-300 000 miles and more if properly cared for and regular maintenance is carried out. Early models suffered from valve seat issues which was rectified after 2008. It’s not uncommon to find high mileage 5.7 Hemi trucks running around today.

Does the Hemi engine require premium fuel?

Basically, a fuel’s octane rating is the measure of how much compression a fuel can withstand before igniting. … This is why high-performance engines require more octane. If you have the HEMI V8 engine, you should use the 89 octane, if you have the base V6 engine, then it is okay to use the 87.

How much horsepower can you get from a 5.7 Hemi?

5.7L Hemi Applications and Estimated Horsepower The engine displaces 5.7L or 348 CID, and at its introduction produced one horsepower per cubic inch. Upgrades to the 5.7L motor raised output to 390 horsepower.

Does all 5.7 Hemi have 16 spark plugs?

REPLACING THE SPARK PLUG There are two spark plugs per cylinder in a HEMI V8 engine. So, when the plugs need replacing, there are 16 to change, not eight. … All except the 2004-2005 engines, that is.

Why do some engines have two spark plugs?

Dual ignition promotes engine efficiency by initiating twin flame fronts, giving faster and more complete burning and thereby increasing power. … Several modern Mercedes-Benz engines also have two spark plugs per cylinder, such as the M112 and M113 engines.