* Engine Mounting: The 1850cc engine from a VW bus has a different mounting configuration compared to the Beetle engines. The mounting points and overall dimensions are incompatible.
* Transaxle Design: The Beetle transaxles are designed to work with the smaller, lighter Beetle engines. They are not strong enough to handle the torque and power of the larger 1850cc bus engine.
* Bellhousing: The bellhousing, which connects the engine to the transaxle, is different between the bus and Beetle engines.
What you need to do:
If you want to use an 1850cc bus engine in a Beetle, you'll need to make significant modifications, including:
* Engine Mounts: Custom engine mounts need to be fabricated to accommodate the bus engine in the Beetle chassis.
* Transaxle: You'll need a transaxle designed for the larger engine, such as a stronger bus transaxle or a custom-built unit.
* Bellhousing: A compatible bellhousing must be sourced or custom-made.
Alternatives:
Consider these alternatives to using a bus engine in a Beetle:
* Swap a Beetle engine: Use a larger displacement Beetle engine, like a 1600cc or 1776cc, which is a more straightforward swap.
* Modern Engine Swap: Explore modern engine swaps, such as a Subaru engine, which are commonly done in VW Beetles and provide more power and efficiency.
Important Note: Modifying a classic car like a Beetle can be complex and require specialized skills. It's crucial to consult with experienced mechanics and specialists before undertaking any major modifications.