Table of Contents
Why do old engines make so little power?
As engines get old, their seals get hard and brittle. Piston rings and valvetrain components wear down. This causes compression and horsepower to drop.
Why do cars in Alaska have plugs?
After a short pause she explained that Alaskan cars have a motor block heater. This heater serves to keep the engine and battery warm so the car would start when it is standing outside in negative temperatures (temperatures below -18oC). They are to provide the electricity for the block-heaters.
What’s the point of freeze plug?
Freeze plugs were originally used to protect engines from cold-related damage. If the coolant inside an engine freezes, it may cause the block to crack. Water expands as it freezes, and the pressure created by this expansion can cause cracks to form.
Are newer engines better?
Modern engines have a lot of technology that helps use less fuel while making more power than older engines, but they have one last thing that older engines just didn’t have: partners. The more speeds a transmission has, the better it’s able to mesh with engine power, making the whole drive train run more efficiently.
Why do big American engines so underpowered?
Large displacement American V8s are typically pushrod engines, and this engine design has characteristics that make it more difficult to produce high horsepower per liter. Both engines produce similar power figures, but use different approaches to get there.
Why are new engines more powerful?
Small is the new big. Here’s the bottom line: gone are the days when engine power was determined solely by its size. More efficient fuel delivery, higher compression ratios, variable valve timing, and on-board computers have enabled engineers to create engines that are as fuel efficient as they are powerful.
How are oil galleries attached to the engine block?
Oil galleries are drilled into the block after it has been cast. There will be plugs which are inserted to blank off the ends of galleries after they have been machined. The oil filter and oil pressure sensor will probably be attached to the block.
Why do we need vent holes in RCS casting?
But many vent holes have to be provided because the gases produced due to the burning of the resin in the RCS sand core, has to be removed out of the cavity in addition to the expanding air. If we fail to remove the gases, they cause serious porosity/blowholes in the casting.
Why is the cylinder head bolted tightly to the block?
The cylinder head is bolted tightly onto the block because the space formed between the walls of the cylinder, the head, and the top of the piston is the combustion chamber and takes the immense force of the detonation of fuel.
Why don’t engines have to be machined when they are rebuilt?
Because the block is massive and made of cast iron, it rarely warps and so the deck of the block rarely needs to be machined when the engine is rebuilt. This contrasts with the underside of the smaller, more malleable cylinder head which can easily warp.