FA20 + Boring holes = bad idea?

[gt8613]

Okay, well I can't say I know much about cars and engines. But I was wondering, wouldn't boring holes into the engine block or w/e be a bad idea? I mean if they do find the .5L more volume...it would give them more stock horsepower. BUT, the motor will loose its capability to be tuned/moded extensively for higher potential horsepower output? I say so because boring holes will lessen the structures integrity and thus reduce the amount of pressure/stress it can withhold?

Is my line of thinking correct?

Thanks.

[pixel67]

No. It would destroy the engine.

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[gt8613]

Care to elaborate?

Originally Posted by pixel67

No. It would destroy the engine.

Sent from my Nexus 7 using Tapatalk 2

[alderaan34]

Umm do you mean boring the cylinders? Cause like pixel said boring holes into the engine would destroy it

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[merlin2111]

Exciting holes are the only way to go, like the others said boring holes will destroy the engine.

[Mikem53]

just look at a pic of the engine with the heads off.. your answer will be obvious.
you could increase the stroke for more TQ.. at the expense of rpms .. then you
have to deal with the intake and exhaust tuning aspects if you want to get it optimized..

[Luis_GT]

am I the only one who read the title and thought of this...

[Pacific Auto]

Better air flow if it looks like swiss cheese?

[gt8613]

Cylinder I suppose then. It is w/e Tada proposed for the 2015 changes for engine output.

[gt8613]

I meant to refer to what they were talking about here...

""I hope to make an engine upgrade at least one time with this car," Tada told Drive.
"We [have] already tried all possibilities and there are several types of 86 prototypes at the Toyota proving ground now; one is a turbocharger, one is bigger displacement and [the other is a] special hybrid system."

"All possibilities are being considered."

Tada would not divulge any further details, but inside sources claim the most likely option is an increase in displacement, bumping the 2.0-litre horizontally opposed engine out to 2.5-litres and increasing power from 147kW to around 190kW.

It is understood this option would be the most cost-effective solution that not only maintains the integrity of the lightweight concept but prevents placing the additional stress on the drivetrain that a turbo charger would or the complexity and weight penalty of a hybrid system.
"

[utekineir]

[spdfreak]

Yes, the cylinder walls would be thinner making them weaker. How much weaker I don't know.

[Suberman]

Originally Posted by gt8613

Okay, well I can't say I know much about cars and engines. But I was wondering, wouldn't boring holes into the engine block or w/e be a bad idea? I mean if they do find the .5L more volume...it would give them more stock horsepower. BUT, the motor will loose its capability to be tuned/moded extensively for higher potential horsepower output? I say so because boring holes will lessen the structures integrity and thus reduce the amount of pressure/stress it can withhold?

Is my line of thinking correct?

Thanks.

Subaru use a steel liner system with an open deck block cast in aluminum. The block would need to be big enough to permit an overbore and larger internal diameter cylinder liners. I'd be amazed if Subaru designed a brand new 2.0 engine block with no room to take it out to 2.5 litres.

[gt8613]

So you are saying that Subaru has traditionally done this with all its engines? & the increase from 2.0 to 2.5 would not jeopardize potential tuned engine output? Hmm, interesting. I would think that even if they anticipated an increase, they would not have cared about anything more than the stock output and hence gone with a compromise for potential output.

Then again, I am technically challenged about the design etc and I am looking at it from a very generic system viewpoint.

Originally Posted by Suberman

Subaru use a steel liner system with an open deck block cast in aluminum. The block would need to be big enough to permit an overbore and larger internal diameter cylinder liners. I'd be amazed if Subaru designed a brand new 2.0 engine block with no room to take it out to 2.5 litres.