Project Ideas - Looking for Satisfying Mechanical Projects on a Z3

fynbos

Newbie
Joined
Aug 19, 2025
Points
3
Location
Austin
I’m not in a rush to buy a Z3, so I’d like to be deliberate about finding the right one. My goal isn’t a turnkey car, but a project I can really rehab. I’m open to spending time and money on parts, but I want a car where the work itself—taking it apart, fixing, and reassembling—is the rewarding part.

I’d love your advice on what to look for. What kinds of mechanical issues make for a satisfying project on these cars? Conversely, what problems are best avoided because they’re money pits, unresolvable, or not much of a learning experience?

I’d rather avoid paint and finish that requires precision. Wrenching is fine. I’m interested in the kind of mechanical rehab that makes a Z3 go from limping (or even not running) to healthy again. If you were in my shoes, what would you be looking for in a project car?
 

Trevor /chedder

Zorg Addict
Joined
Oct 23, 2021
Points
59
I've really enjoyed my 1.9 m44. It's my first project car and it's an easy car to work on. I'm happy with the performance and had fun tinkering with suspension, intakes fixing and driving it. And it's all fairly cheap parts and bits.
 

fynbos

Newbie
Joined
Aug 19, 2025
Points
3
Location
Austin
I've really enjoyed my 1.9 m44. It's my first project car and it's an easy car to work on. I'm happy with the performance and had fun tinkering with suspension, intakes fixing and driving it. And it's all fairly cheap parts and bits.
Any examples of bigger things you've tackled on it? Thanks!
 

ChrisD

Zorg Addict
Joined
Nov 29, 2023
Points
54
Location
Evesham
Model of Z
M44
Any Z3 will give you plenty of opportunity to spend time and money, disassembling and fitting new parts. You don’t need to find a wreck to keep you busy - these cars are old, parts are wearing out and failing all the time. I’d look for as clean an example as can be found with minimal rust, decent paint, and then work through the list of standard maintenance items e.g. cooling system, suspension and brake refresh, seat bushes, replacing all deteriorated rubber components, running diagnostic checks, oil/fluid changes and general servicing, fixing soft top leaks and much more. Part of the fun of owning an old car is spending weekends fixing it and working to get it as good as it can be 🙂
 

fynbos

Newbie
Joined
Aug 19, 2025
Points
3
Location
Austin
Any Z3 will give you plenty of opportunity to spend time and money, disassembling and fitting new parts. You don’t need to find a wreck to keep you busy - these cars are old, parts are wearing out and failing all the time. I’d look for as clean an example as can be found with minimal rust, decent paint, and then work through the list of standard maintenance items e.g. cooling system, suspension and brake refresh, seat bushes, replacing all deteriorated rubber components, running diagnostic checks, oil/fluid changes and general servicing, fixing soft top leaks and much more. Part of the fun of owning an old car is spending weekends fixing it and working to get it as good as it can be 🙂
love that!
 

Smudgemanuk

Zorg Legend
British Zeds
Joined
Dec 1, 2024
Points
73
Location
Bicester, Oxford
Model of Z
2.8l TU pre-facelift z3
:welcome: to the forum from Oxfordshire

I replaced every single coolant/ vaccum pipe on mine when I first got it, that was quite satisfying. That includes intake manifold off, and a good memory of how it goes back together.

But as said previously these cars are getting old now so pretty much any z you buy will benefit from some tinkering

Chris
 

Zephyr

Zorg Guru (III)
Supporter
Joined
Aug 10, 2022
Points
139
I would go for a facelift 2.5 (in the US) six cylinder or the 3.0
Easier to diagnose with a scan tool, enough power to start with and great potential (again in the US) with all these supercharger kits that are availlable there and finally lots and lots of interchangeable engine parts with what you have over there. M54 and in the case of 2.8 M52 engines are a dime a dozen and no need to fix a broken one. You just slap a better kept engine and move on.
Some come with the sport pack (better handling, different wheels, bucket seats and some more bits and bobs) and I would search for such an example.
Do not start with a junkyard project, prices these days do not justify a ground up restoration.
And..... finally..... trrrrrrrrrr boom..... you can always do a rebody to a Cobra or a Ferrari and enjoy your divorce when it finishes....
Cheers
 

Hwk-I-St8

Zorg Addict
American Zeds
Joined
May 9, 2022
Points
59
Model of Z
Z3 Roadster
I would go for a facelift 2.5 (in the US) six cylinder or the 3.0
Easier to diagnose with a scan tool, enough power to start with and great potential (again in the US) with all these supercharger kits that are availlable there and finally lots and lots of interchangeable engine parts with what you have over there. M54 and in the case of 2.8 M52 engines are a dime a dozen and no need to fix a broken one. You just slap a better kept engine and move on.
Some come with the sport pack (better handling, different wheels, bucket seats and some more bits and bobs) and I would search for such an example.
Do not start with a junkyard project, prices these days do not justify a ground up restoration.
And..... finally..... trrrrrrrrrr boom..... you can always do a rebody to a Cobra or a Ferrari and enjoy your divorce when it finishes....
Cheers
Supercharger kits?
 

Zephyr

Zorg Guru (III)
Supporter
Joined
Aug 10, 2022
Points
139
Supercharger kits?
VF engineering still makes them.
And pretty sure Craigslist or Marketplace have quite a lot of them from e36/e46/e39 models that have the M52/M54 engines.
For the four cylinder ones only Downing Atlanta had a full kit but they are long gone now.
 
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