Attn Keith: the bar has been suggested

Enter Copart 2023:

I'm wondering why Mr. Tanner has not responded with a build schedule yet...

LOL.  Any bets on how many Miatas could you buy for the price of that engine?

The 250 horsepower, 3 cylinder, naturally aspirated development mule for this work of art "should" fit with ease :)

I'm curious what type of fuel it's running on.

nderwater said:

LOL.  Any bets on how many Miatas could you buy for the price of that engine?

All of them.

In reply to Appleseed :

All of them and the LS3s for them aswell.

Send me one of the engines, I’ll put it in. :)

You guys heard the man. Everybody pitch in. I've got 12 cents.

ZOO said:

The 250 horsepower, 3 cylinder, naturally aspirated development mule for this work of art "should" fit with ease :)

Go on...

z31maniac said:

I'm curious what type of fuel it's running on.

Distilled sweat of F1 world champions, near as I can figure. 

https://jalopnik.com/cosworth-says-it-made-a-250-hp-naturally-aspirated-thre-1831041322

Built the 3 cyl to get a physical prototype sooner.  Pretty interesting article.

I want the 3cyl. Very much. 

A 3 cyl engine that revs to 11K and makes 250HP.

Hmm... part of me can hear the moto world going, "yeah... so?"

What I'm curious about is the torque curve, which is often the death-nail for a small displacement engine for use in a car.  Maybe they're using a "no-camshalft" valve system that would allow for infinitely variable valve timing, lift and duration?

In reply to Ian F :

Emissions compliant in a car. That's the exciting part. I guess I don't know if a modern literbike engine would meet car emissions? 

In reply to mazdeuce - Seth :

A literbike engine would not meet car emissions, the regulations trail by a decent amount so they're still not required to be nearly as clean.

Ian F said:

What I'm curious about is the torque curve, which is often the death-nail for a small displacement engine for use in a car.  Maybe they're using a "no-camshalft" valve system that would allow for infinitely variable valve timing, lift and duration?

The Aston will be a hybrid, so the electric motor will likely be used for "torque fill" on the bottom end. But, if you're talking about a hypothetically swapping the 3 cyl "test mule" into something else, the low rpm torque might be an issue.

In reply to STM317 :

Let's call it a 1.5l engine.  Let's also say peak HP is at 10500.  Torque at peak HP therefore is 125 ft-lb, and it will be higher at some point down in the rev range.

Sounds pretty nice to me for a smallish car, and pretty good for a 1.5l engine.  If peak is even 145 ft-lb then that is going to be one of the most efficient production engines.  I bet that it probably would feel as strong down low as a mediocre 1.6-1.8 engine, which clearly is acceptable otherwise Mazda would not have sold five zillion Miatas.

Now imagine a stock Miata pulling in First gear, except it could pull like that through to about 70mph instead of 35 before having to shift.