Engine Build Tips and Tricks Mitsubishi 4G64 - Built by Aerospace Engineer

4G64, 2.4 ltr, 1991 engine model 8V SOHC

I am an Aerospace Engineer who likes to rebuild engines as a hobby. Before I got a degree I was reconditioning cylinder heads in and engineering workshop.

I wish I had a resource like YouTube when I was building my first engine 25 years ago!

Hope this either encourages you to give it a go, or convinces you to get help from someone experienced to guide you through your first engine build.

There are many ways to skin a cat, but after building half a dozen Mitsubishi engines I thought I'd share some techniques and video of how I do it.

Enjoy!


0.00 4G64 Rebuild intro
0:35 Block Painting
0:51 Fitting Welsh Plugs
7:04 Check Block Face
9:40 Fitting Rod Bearings
11:25 Cleaning Crankshaft
12:38 Lube crank bearings and install
14:11 Thrust Bearing Clearance check
14:24 Fitting Pistons and Rings
18:00 Torque small end (rod) bearings
19:35 Oil Pump clearance check
24:47 Crank and oil pump seals
27:10 Front cover gasket removal
28:06 Oil pump housing and seal
30:52 Oil filter and regulator check and install
33:15 Front cover gasket
37:42 Crankshaft bolt tightening