When it comes to building a high-performance engine for a turbocharged Miata, the stock connecting rods may not be up to the task.
Forged connecting rods are a crucial component in any high-performance engine build, as they are much stronger and more durable than the stock rods. This is especially important in a turbocharged engine, as the added boost puts a significant amount of stress on the connecting rods.
The stock connecting rods in a Miata are made from cast iron, which is a relatively brittle material. While they may be sufficient for a naturally aspirated engine, they are not designed to handle the increased cylinder pressure and torque that comes with a turbocharged setup.
Forged connecting rods are much stronger and more durable. They are also designed to be much more precise and consistent in their dimensions, which helps to reduce stress on the rod bearings and increase the overall reliability of the engine.
Another advantage of forged connecting rods is that they are able to withstand higher RPMs, which allows for more aggressive tuning and better performance. This makes them a must-have for anyone looking to build a high-performance turbocharged Miata engine.
You can spend big bucks on Eagle or Manley rods, but if you’re on a budget, you’ll do just fine with MAXpeedingRods.
I’ve ordered a set for my 1.6 motor build!
Rods only Builds
Quite a few brave souls have built engines with stock pistons and forged rods. Check out these threads :
https://www.miataturbo.net/engine-performance-56/another-rods-only-engine-thread-89553/
https://www.miataturbo.net/diy-turbo-discussion-14/swapping-just-rods-300hp-31564/
https://www.mx5nutz.com/threads/forged-rod-only-build-whos-done-it.343497/
https://www.mx5world.com/forum/miatapower-list-archive.12/stock-pistons-and-forged-rods-insanity.316253/
“Every day that I can work on my Miata, drive my Miata, or even think about my Miata is a good day.”
— Dylan Howell, Only Miata
