Don’t gamble on your engine’s lifespan! In today’s video, we’re diving into the bottom end of the 1986-1993 Mazda B-Series engine. I’ll show you exactly how to install the crankshaft and, more importantly, how to use plastigauge to verify your main bearing oil clearances.
[What You’ll Learn] Getting the clearances right is the difference between a truck that runs for another 200k miles and an engine that fails in the first hour.
What you will see in this video:
Pre-installation cleaning and prep.
Step-by-step Plastigauge technique.
Laying the crank and installing main caps.
Reading the results and comparing them to factory Mazda specs.
Final torque sequences.
If this helped you get your Mazda back on the road, please Hit the Like button and Subscribe! I’m making a full series on restoring and customizing these 86-93 trucks.
