Nice to see is that there's an enlargement in the center of the intake port.
This head could gain velocity if we filled up the floor of the intake ports.
More on this in the "Motoman topic".
D14a4 cylinder head cross section
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hondaNickx
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D14a4 cylinder head cross section
My old f***ked up D14 head got under the bandsaw at work...
Nice to see is that there's an enlargement in the center of the intake port.
This head could gain velocity if we filled up the floor of the intake ports.
More on this in the "Motoman topic".
Nice to see is that there's an enlargement in the center of the intake port.
This head could gain velocity if we filled up the floor of the intake ports.
More on this in the "Motoman topic".
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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Dodo Bizar
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Re: D14a4 cylinder head cross section
Really nice pictures!
But about the dip in the inlet port, isn't it due to the fact that you cross that port a little diagonal? If a tiny river of water would run down the runner, would it form a puddle or slow down on some pieces? I doubt it a little.
But about the dip in the inlet port, isn't it due to the fact that you cross that port a little diagonal? If a tiny river of water would run down the runner, would it form a puddle or slow down on some pieces? I doubt it a little.
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hondaNickx
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Re: D14a4 cylinder head cross section
It could be , but i checked them all with my finger before cutting them down and even then i felt the puddle.Dodo Bizar wrote:Really nice pictures!
But about the dip in the inlet port, isn't it due to the fact that you cross that port a little diagonal? If a tiny river of water would run down the runner, would it form a puddle or slow down on some pieces? I doubt it a little.
Some say the port creates like a momentum to get a strong flow into the head. Going wide before entering a small exit to get a higher velocity.
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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mynameisowen
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Re: D14a4 cylinder head cross section
truly awesome, whats was wrong with this head in the first place?
1996 EJ9 Civic
1998 BB8 Prelude Motegi VTi
1998, B16A2 EK4 Civic VTi
Aims:
EJ9 - Now my GF's car.
BB8 - Rebuild after crash damage to front end.
EK4 - Daily driver. Strip and track prep once prelude project complete
1998 BB8 Prelude Motegi VTi
1998, B16A2 EK4 Civic VTi
Aims:
EJ9 - Now my GF's car.
BB8 - Rebuild after crash damage to front end.
EK4 - Daily driver. Strip and track prep once prelude project complete
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Dodo Bizar
- Site Admin
- Posts: 2009
- Joined: Mon Jun 22, 2009 10:36 pm
Re: D14a4 cylinder head cross section
If you could feel the puddle, it is there... I should do the same since I have 2 D14 head lying around haha.
Momentum creation who knows. I expect Honda to do some CFD calculations on it, was CFD for engines developed to such a degree in the 90's?
Momentum creation who knows. I expect Honda to do some CFD calculations on it, was CFD for engines developed to such a degree in the 90's?
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hondaNickx
- Posts: 713
- Joined: Wed Aug 05, 2009 1:06 am
- Location: Belgium
Re: D14a4 cylinder head cross section
Well since Mr. Kamaguti was allready involved in this in the 1950's in Japan ,i would guess they could.
The japanese where always ahead from the rest of the world when it comes to technology.
Even the Type-r heads in 1998 got a hand finish so i think they would know something more.
The japanese where always ahead from the rest of the world when it comes to technology.
Even the Type-r heads in 1998 got a hand finish so i think they would know something more.
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!"