1975 BMW 2002 Turbo M42

Build011 1975 BMW 2002 Turbo M42 690Wow…what a build this was. And what a friendship it formed. As I have said time and time again the reason we do this is really for the story. Yes we like building fast/fun cars but we really do it for the connection that we make with the owners. We are not replacing the brakes on you 2004 Toyota. We are building a car that you will make memories in. That you will take your kids to get ice cream in. That you will drive cross country and see sights like this in. While doing it we hope that we can make friends along the way. That is exactly what happened with this build.

This car is nothing short of amazing. The owner gave us a lot of control of the direction of the build. All he wanted in the end was a kick ass car that was fun to drive, looked good, and brought a smile to his face.

There are nearly 700 pictures in the gallery for this one. We will explain as much as possible in the posts below but there is no way I can go back and write it all up. If you have any questions what so ever feel free to email us.

This car got a built turbo M42 with a GT28RS turbo controlled by Megasquirt 3 Pro.  We pushed the engine back about 3″ from our normal location on the M42 swaps so that there was more room for a puller radiator fan and AC condensor.  We built a custom engine harness for the entire car putting a upgraded fuse block under the rear seat.  The entire suspension was rebuilt, built small case differential was installed, and a bunch of custom interior bits.  Read through the build and check out the pictures in the gallery.  This car lives in Southern CA where it makes it way to a lot of Cars and Coffee and vintage shows.  If you ever see it be sure to ask the owner (Ken) how Gus is doing.

Follow the story

Build011 1975 BMW 2002 Turbo M42 689


Whew this one was HUGE. Again I did not post about every single detail as it would be so much

Build011 1975 BMW 2002 Turbo M42 644

Almost there

With most of the fab and custom work complete it was time to put things together for good. We built

Build011 1975 BMW 2002 Turbo M42 573

Engine going in

Waaaaay more has happened up until this point but don’t have every detail pictures and I cannot write about every

Build011 1975 BMW 2002 Turbo M42 673

Warm…and cold

As with everything in this build we were doing things that we had never done before. The owner wanted to

Build011 1975 BMW 2002 Turbo M42 498

“Shaved” bay

There were a lot of firsts during this build. First megasquirt 3 setup, first full body harness, so why not

Build011 1975 BMW 2002 Turbo M42 549

Engine Build

We did a complete build on this engine. 9:1 compression CP pistons, ARP studs, all new timing chain/guides/etc, new lifters,

Build011 1975 BMW 2002 Turbo M42 434

Downpipe and exhaust

The entire exhaust system on this car is made from 304ss and tig welded. If you look back at some

Build011 1975 BMW 2002 Turbo M42 058

Suspension and Diff

Not many pictures of this process. All the reused suspension parts were powder coated satin black. We installed H&R sport

Build011 1975 BMW 2002 Turbo M42 486

AC Lines

This post is slightly out of order…oh well. This car got AC and well AC needs lines. So here they

Build011 1975 BMW 2002 Turbo M42 299

Charge pipes

This was a pretty simple step but a step to show. Onward we go. Air cleaner on the turbo. Blow

Build011 1975 BMW 2002 Turbo M42 249

Turbo Manifold time

Time to build a turbo manifold. This was made out of sch40 pipe with 1.25″ runners into a T3 4-1

Build011 1975 BMW 2002 Turbo M42 271

Radiator fan fun

This car home would eventually be in Southern California. I hear it gets warm there and with a turboed M42

Build011 1975 BMW 2002 Turbo M42 190

In goes the engine

We have done a TON of M42 swaps and made hundreds of sets of mounts over the years for others.

Build011 1975 BMW 2002 Turbo M42 101

Ugh, rust repair

When I bought this car I knew it has some rust in the floors. I wasn’t aware of the firewall

Build011 1975 BMW 2002 Turbo M42 050


With all the suspension parts that were to be reused broken down it was time to fix a couple trouble

Build011 1975 BMW 2002 Turbo M42 026

Tear down!

With a build this big the first step was to pull it all apart. So that’s what we did. Rear

Build011 1975 BMW 2002 Turbo M42 017

And it begins…

I bought this car from the guy that I built the first 4 M42 swap cars for. He said it