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Can you replace a 1990 Mazda b2600i engine with 1986 b2200 engine?

It's highly unlikely that you can directly swap a 1986 B2200 engine into a 1990 B2600i. Here's why:

* Engine Differences: The B2200 and B2600i had significantly different engines. The B2200 used a 2.2L 4-cylinder engine (sometimes carbureted, sometimes fuel-injected). The B2600i, on the other hand, had a 2.6L 4-cylinder engine and was exclusively fuel-injected.

* Engine Mounts and Positioning: The engine mounts and positioning in the chassis are likely different between the two trucks. You'd need extensive modifications to make them compatible.

* Transmission Compatibility: The transmissions used in the two models might not be compatible, potentially requiring another swap.

* Wiring and Electronics: The fuel injection systems and other electronic controls are likely different between the two models, making wiring integration very challenging.

What to do Instead:

* Rebuild your existing engine: If your B2600i engine is damaged, rebuilding it is often the most cost-effective option.

* Find a compatible replacement engine: Look for a used or rebuilt B2600i engine. This will save you a lot of hassle and ensure compatibility.

Before attempting any engine swap, consider the following:

* Your mechanical skills: Engine swaps require significant mechanical knowledge and experience.

* The cost: Engine swaps can be expensive, especially if you need to purchase new parts or pay for professional labor.

* Legality: Check local regulations about engine swaps and emissions standards.

It's always best to consult with a qualified mechanic before undertaking a major engine swap. They can assess the feasibility of the swap and provide guidance on the best course of action.