I’ve seen engine swaps and stuff and I am wondering how people fit engines/transmissions that are for bigger cars.
I’ve seen the SRT Hellcat in the Prius and how they modified the car basically around the engine but I’m interested in like how they fit something like the Viper V10 or LS into cars that don’t have the same engine compartment but it doesn’t look like they did anything to it.
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It comes down to a question of physical space and modification, if needed.
If the engine you wanted to put into another car was smaller than the engine bay (i.e. if there’s still free space), then you would simply create engine mounts that hold the new engine in place using the mounting holes in the engine bay that were intended for the original engine.
Historically, you would’ve had to make these yourself. With today’s car scene and how many engine swaps take place, there’s a chance you find someone who manufactures engine mounts for a given engine to go into a given car/engine – this is particularly true for popular engines, like Toyota’s 1JZ/2JZ, Nissan’s RB25/RB26, BMW’s S54/S65, etc. Keep in mind that engine mounts will be unique to a given engine + engine bay combination, rather than for just that engine.
As for engines that are bigger than the engine bay of the car that you want to put them in to, let’s use your Toyota Prius/SRT Hellcat example. The Toyota Prius is an economic car and doesn’t have a very big or powerful engine, so its engine bay is quite small (because why would you create more space than you need?). The SRT Hellcat’s engine is a very big engine in itself, so it’s not going to fit.
So what do you do? You create more space. There are two main ways that people do this.
The first is to modify the engine bay/the car itself by cutting out parts of the engine bay where the engine doesn’t fit – this could be anything from cutting out small corners to cutting out major parts of the car itself.
The other is to take parts off of the engine to make it smaller. Engines will have parts and accessories on them that are for the driver’s benefit but are not strictly essential for the engine to work. For example, an engine from a modern car could have a power steering pump and an air conditioning compressor bolted onto the engine.
These parts could be sticking out and preventing the engine from fitting, but removing them could then allow the engine to fit. If you remove a power steering pump, you then lose power steering – it’ll be physically harder to turn the steering wheel, but you can still drive. If you remove the air conditioning compressor, you won’t have air conditioning anymore, but you can still drive a car without it.
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