Piston and rod size of the D14A3/A4/Z1/Z2

hondaNickx
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by hondaNickx »

Indeed P2Y is Y8 /EK3 head , Y7 is P2A ;)
Quote from Endyn:"The combustion chamber is a better shape than the DOHC.So don't chunk those 1.6 SOHC engines, they can make really good power. For a pure performance application, regardless of application, I'd choose the SOHC. No bull!"

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Raimundo
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D14A2 pistons

Post by Raimundo »

Why does D14A2/D16Z6 head produce more power than a full D16Z6 engine?

Your answer was documented through pictures!

D16Z6 piston. P28:
Image

D14A2 piston.
Image

Huge difference! :mrgreen:
95' Honda Civic
EDM D14A2

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saxophonias
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by saxophonias »

wow. Which other honda engine used to have this kind of piston?

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Raimundo
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by Raimundo »

I guess none. D15B2/7 uses higher dome than D16Z6, but still not higher than piston borders, its "flat" so to speak.

A better piston than the ones I got are PM7 from D16A9, are the ones with the highest dome OEM!

Image

I'm getting more condifendt I will reach 140hp with ECU tune now! :mrgreen:

EDIT: D14A1 pistons are equal to D14A2.
Civic GL (Dual Carb)! ;)
95' Honda Civic
EDM D14A2

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saxophonias
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by saxophonias »

Maybe they had exchanges with rover pistons?

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Raimundo
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by Raimundo »

Sorry but I didn't get what you meant to say.

Please explain me another way :P
95' Honda Civic
EDM D14A2

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saxophonias
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by saxophonias »

Come you MB Rover guys :roll: :D :D :D

Actually maybe some parts are intrechangeable with Rovers due to their manufacturing in England and the collaboration with Rover. I have this impression with the gearboxes as well.

hondaNickx
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by hondaNickx »

Correct the late d14 engines had some good Dome pistons in them ,but they also have a different head then a D16z6 and valves are in a different angle , and valves are wayy smaller the the Z6 ones.That's why you're making more hp...You gotta watch out valves don't hit the pistons with these engines .Increased compression bumps up the torque ,not so much on the Hp.
Quote from Endyn:"The combustion chamber is a better shape than the DOHC.So don't chunk those 1.6 SOHC engines, they can make really good power. For a pure performance application, regardless of application, I'd choose the SOHC. No bull!"

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Raimundo
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by Raimundo »

Ah, I see.

Nop, you can use Rover 216 GTi/Coupe (Tomcat) pistons, as the engine is D16A9 as Concerto/CRX one.

Gearboxes are different, Rovers using Honda engine have mechanical clutch, instead of hydraulic ones. And K and L Series Rover, have very different gearboxes, they don't fit into our engines.

:P
95' Honda Civic
EDM D14A2

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SquirtAndSpark
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Re: Piston and rod size of the D14A3/A4/Z1/Z2

Post by SquirtAndSpark »

Raimundo wrote:I guess none. D15B2/7 uses higher dome than D16Z6, but still not higher than piston borders, its "flat" so to speak.

A better piston than the ones I got are PM7 from D16A9, are the ones with the highest dome OEM!

Image

I'm getting more condifendt I will reach 140hp with ECU tune now! :mrgreen:

EDIT: D14A1 pistons are equal to D14A2.
Civic GL (Dual Carb)! ;)
i will be waiting for see this in action :P :D

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