Miata Turbo Forum - Boost cars, acquire cats. - Forged Rods

- Engine Performance (https://www.miataturbo.net/engine-performance-56/)

- - Forged Rods - Suggestions? (https://www.miataturbo.net/engine-performance-56/forged-rods-suggestions-102216/)

They do offer a Maxi Light version as a special order. Although there is no weight listed for these. They are not made from forgings and cost almost as much as the H beam Carillo. Most likely since they are machined from cold drawn 4340 bar stock they are manufactured in the US.

Quote:

Originally Posted by emilio700 (Post 1563193)

Close to OEM then. Not light, same as weight as Manley.

They can take more pressure before cracking/failure.
Nox Vidmate VLC

Having more air and fuel combusting (required to make more power out of the same volume) means that there's higher forces acting upon the engine internals, so you'll need stronger materials to be able to withstand those forces.

Quote:

Originally Posted by markano (Post 1563365)

They can take more pressure before cracking/failure.

Having more air and fuel combusting (required to make more power out of the same volume) means that there's higher forces acting upon the engine internals, so you'll need stronger materials to be able to withstand those forces.

https://i.makeagif.com/media/2-07-2017/8Uid9N.gif

Did you ever get an answer?

Quote:

Originally Posted by mx5-kiwi (Post 1562823)

Had a "small" engine issue....

I beleive I have read a few years ago here, chinese is "okay".

So just checking what the "forums" current consensus and advice on rods might be. Iif it was just the rods, we would spend the money on Manly...but we also need a crank and possibly a block and all the machining/balancing etc that goes with it, so budget and saving a few hundred here or there is an issue (as usual).

Full race engine. Rev limit 7500 - 8000 depending on torque curve. Borg Warner turbo running max of 22 psi around 350 whp.

Landed in NZ.
Manly - Supermiata approx $790.00
Eagle $650.00
Maxpeedingrods $450.00

appreciate any advice for or against whats listed or anything else to consider?

i was able to get some Eagle Rods for $330, and ran 21psi for a few laps... Until I burned a hole in my piston!
but they claimed they were good for 900hp.
I'd rather have a torque number, but that was so far above where I was going.
But the rods held up.

What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.

Quote:

Originally Posted by kricsesz (Post 1633049)

What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.

Never heard of them. I'm using Brian Crower rods, which aren't light.

Quote:

Originally Posted by kricsesz (Post 1633049)

What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.

I'd still go with Manley.

Quote:

Originally Posted by kricsesz (Post 1633049)

What do you think guys about Molnar rods for NB2? Seems like lighter and better finished than Manley.

Unless you’re shooting for 300+ at the wheels just go with MaxSpeedingRods. Hundreds of guys run them without issue. A very known-quantity for boosted Miatas.

If you like K1 rods, Molnar supposedly better. K1 was started by Molnar who then left to start another rod company under his own name.

This is a timely thread.

I think I have a case of the 'banana rods' after developing a bad knock that is otherwise untraceable :cry: