Junk Mechanics Engines, Turbos and Superchargers

Engine families and where to buy parts

Performance parts live on the shelves at Car Zone (players often mistake the nearby convenience store for it). You click an item on the shelf to see its price. Engines are sold as separate parts: block, cylinder heads, manifolds and forced induction kits.

Sound and balance change between updates. The August 16 update rebalanced engines and buffed turbos so they actually make cars faster, and the August 30 update changed how the V8 and V10 sound.

The V10: cost and compatible cars

When the V10 launched, the block alone cost about 220,000. The other V10 parts shown on the shelf ranged from roughly 20,000 to 80,000 each, and its turbos were about 55,000. A content creator later said they could not even afford the block on its own, which tells you where it sits in the progression.

At launch only a few cars could take a V10: a Viper-style car, an R8-style car, an LFA-style car, the Testarossa-style car (which spawns with a V10 already), and what the creator believed was the CLK-style car. The developers said they would add support for more vehicles based on feedback, and the August 24 update log listed V10 swaps among its changes, so check the swap menu on your own car.

Turbos, superchargers and twin-charging

• Twin turbo kits were in the game by August and were buffed on August 16.
• Superchargers arrived on September 5 for the V6, V8 and V10, with their own intake manifold. One kit cost about 13,000 in the update video.
• Twin-charging is allowed: a creator fitted a twin-turbo kit and a supercharger to the same muscle car on camera.
• Boost Target on the tuning computer only matters once forced induction is fitted; most shared tunes run it near maximum.

Superchargers have a high-pitched whine in game, which some players dislike. If you want the sound but not the extra cost, try one on a cheaper V6 first.

Engine swaps step by step

1. Fully repair the car first so you are not swapping into a broken drivetrain (repair guide).
2. Buy the engine parts at Car Zone. Check that the car supports the engine before buying a V10.
3. On a lift, pull the old engine parts with the wrench and fit the new ones, then add the turbo or supercharger kit.
4. Keep the old engine and transmission in your inventory if you may want them back; the Big Inventory pass helps here.
5. Visit the tuning shop and build an ECU and gear tune for the new setup.

In an October 3 build, a creator pulled the V6 out of a newly added Camaro-style car, swapped in a supercharged V8, added twin turbos, and tuned it for acceleration. It topped out at about 265 km/h, which they said was deliberate because the gears favoured launch.

Transmission 8 and what speeds to expect

The September 12 update video showed a part called Transmission 8 under one car. The creator assumed it gives eight gears, and the eight-ratio gear set in the tuning guide matches that, but the game did not spell it out.

The jump from 326 to 358 km/h on the same car shows why tuning matters as much as the engine. The tuning menu's own top-speed estimate is unreliable, so always test on the highway.