How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Matt Your Own Question
Matt, Engineer
Category: Car
Satisfied Customers: 20374
Experience:  Honors degree in Mechanical Engineering, worked 8 years as a Formula 1 engine engineer.
Type Your Car Question Here...
Matt is online now
A new question is answered every 9 seconds

Is it possible to put a 1.8L engine in a 1991 Mazda Miata?

Resolved Question:

Is it possible to put a 1.8L engine in a 1991 Mazda Miata?
Submitted: 6 years ago.
Category: Car
Expert:  Matt replied 6 years ago.

I'm presuming that you want to fit the later 1.8 mazda engine from a later miata / MX5
this shouldn't be a problem as both engines are externally almost identical with regard to engine mounts . gearbox bolt pattern etc.

What you will also have to get from the donor car is the ECU, Airlfow meter and engine wiring loom as the ECU pinout changed over at some point so its probably easier to treat it like a fresh installation.

An alternative route to this would be to fit the 1.8 engine and then get your ECU re-mapped to suit the larger engine, this would be a simpler route in terms of sorting out the electrics but would be slightly more expensive.

I'd speak to a MX 5 specialist like:

who can point you in the direction of the parts you'll need
Matt and 6 other Car Specialists are ready to help you

Related Car Questions