How To Build A 300 Hp Chevy 350
When it comes down to engine building, there are three main components that make up most cars today-cylinders, pistons, and heads. The cylinder is what produces gas in the form of combustion, the piston goes back and forth moving around the center hole of the cylinder, and the head covers the top of the cylinders and has intake and exhaust ports!
The diameter of the cylinder determines how much air can be drawn into the car through the porting and the size of the pipe that feeds fuel into the chamber (the throttle body). This effect changes how fast the engine will burn the fuel and produce energy or work, which is why engines with larger openings use more quickly burning fuels like gasoline.
By changing the size of the opening in the throttle body you can change the power produced by the vehicle! Most people begin experimenting with this type of modification when they have their engine running well and want to see if they can get more out of it. That’s where our first tip for this article comes from!
Tip 1: Use high quality fuel!
Fuel makes a big difference when it comes to horsepower! There are two major factors that affect the performance of your engine due to the way it combusts the fuel-octane level and grade.
Buy a crate engine
There are two main types of engines you can build into your hot rod or drag car. The first is buying an already built engine, either from a manufacturer or through a professional builder. These are great if you like the look of the engine, and/or want to use it as a starting point for building your own motor!
The second option is creating your own engine by sourcing parts online and in various stores. This is also known as ‘building’ your own engine, and is very possible to do with enough research and measurements!
Both types of engine are not too difficult to work on, but there are things needed to ensure proper functioning of the engine. A lot of people start working on their engine before getting these tools so they know what everything means, this is a good idea!
There are several different ways to source a block for your new engine, all depending on how much money you have available to spend. Some less expensive sources include local junk yards or car dealers that sell used cars and parts.
More expensive options include going to individual sellers online or at garage sales, or looking in classifieds and websites such as Craigslist and Kijiji.
Run a compressor
The next step in engine building is running a compressor. A compressor is like a small vacuum pump that works by sucking air out of a space and then pushing it somewhere else. In this case, the place it pushes the air is through a hose, which creates pressure.
A compressor takes your spent combustion gasses and pulls them through an intake pipe or tube before compressing them. This process is what helps fuel get pushed out of the car and into the tank!
Running a compressor requires you to have a source of power to operate it. There are many ways to supply this power, but the most common way is using electricity. Many people use a tool called a multimeter to test if a device has electrical power.
Check your fluids
The first thing you should do is make sure that all of your vehicle’s fluid levels are up to par. You want to check each fluid type, not just the ones that say “lubricate” in them!
You can use test strips or tools to determine if your car needs new engine oil, transmission fluid, coolant, or anything else it calls for. Make sure to always buy high quality products; cheap oils and coolants will run dry much faster, causing damage to your car.
General tips: when changing the life out of an item, drag the stick-type tool along slowly so as not to pull off any debris or contaminate the fluid. Never scrape the pan with a blade, instead use a plastic cone shaped device called a gasket maker. This way you don’t risk tearing up the metal surface underneath the grease layer!
Remember: stay at least two feet away from the car while working on it! You don’t want to get pinched or burned by something too close to exposure to the motor.
Sources: wikiHow, ehow
Students: learn more about cars by reading this article and doing some research.
Connect all sensors
The next step in sensor gathering is to make sure that your engine, chassis, or vehicle sensors are working properly. If they’re not, then you won’t get very accurate data!
Make sure to test each of these items out by using them while driving around. Some engines have additional sensors built into them so look for those as well.
You can also purchase add-on sensors from sites such as eBay and Amazon. Make sure to do some research and check out which ones work the best for your car before buying them.
General rules about adding new sensors: When installing a new sensor, turn off the ignition, remove the source of power (for example, a battery cable), and then install the new device.
After this, switch the new sensor back on and see what information it gives you! This way, your car will recognize the new sensor and know how to use it.
Do a compression test
The next thing you will want to do is perform a compression test. This tests how much pressure your engine has when pressed down. You can use a gauge or digital tool to measure this!
To test detonation, you need to compress an air-fuel mixture (like gasoline mixed with oxygen) more than it’s designed to be compressed. In other words, you have to add too much fuel into the mix!
This is called overcompression and it causes the explosion that we know as combustion. If you notice any sounds like flames or whistling gas, then chances are high that your car might explode at some point!
Never let someone else play with fire in your vehicle! If you feel something isn’t right, get out now! Also, make sure to check all of your tools for signs of smoke or spark.
Check your timing
The first step in building your own engine is checking your cam angle and your intake and exhaust valve overlap. Both of these are determined by looking at where each cylinder’s head goes as it comes up out of the block.
The cams come with instructions, so make sure you check those! If your valves don’t stay down while the piston moves up, then your timing isn’t right. You can fix this easily by changing the gap between the top of the piston and the overhead gasket.
Another reason to check your timing is if there is noise coming from the motor when you start it up. This could be due to too much initial fluid in the cylinders or something else, but timings are usually the culprit.
Connect your battery
Now that you have gathered all of your parts, it is time to connect your battery! You will need to determine which type of battery you have before connecting it. There are two main types of batteries- dry cell or flooded.
Dry cells do not contain fluid so they will require you taping in a way that does not cause shorting. Make sure to research how to install a new dry cell battery correctly as some may damage your vehicle.
Flooded batteries use electrolyte liquid to help power the car. These can be attached directly onto the motor without any modifications.
Run a diagnostic test
The first thing you will need to do is perform a basic car inspection. Look for any fluid, electrical or mechanical issues that could prevent your engine from working properly.
If you notice smoke coming out of the tailpipe, have enough fuel in the tank, then check the exhaust system to make sure there are no clogs. If the engine speed drops while idling, this can be due to either a lack of gas or an issue with the air intake.
You may also want to pull off the hood to inspect it more thoroughly. Check the grill, if possible, as well as look under the vehicle for any damage. Is the bumper still attached? All of these things play important roles in how fast your car will run!
Now that you’ve inspected the surface level parts, take a closer look at the underneath section. Does anything seem slightly loose or shoddy looking? You should definitely have someone else check these areas for you, as this could indicate serious internal problems.