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| == GM Vauxhall DOHC head on A block == | == GM Vauxhall DOHC head on A block == | ||
| [http://datsun1200.com/modules/myalbum/photo.php?lid=6885 http://datsun1200.com/modules/myalbum/photos/thumbs/449.jpg] | [http://datsun1200.com/modules/myalbum/photo.php?lid=6885 http://datsun1200.com/modules/myalbum/photos/thumbs/449.jpg] | ||
| - | This is the legendary Nissan 'AY' factory race head on a 1200 block. It's a pushrod/OHV design that features crossflow porting & two plugs per cylinder. | + | <br>This is the legendary Nissan 'AY' factory race head on a 1200 block. It's a pushrod/OHV design that features crossflow porting & two plugs per cylinder. |
| [http://datsun1200.com/modules/myalbum/photo.php?lid=6672 http://datsun1200.com/modules/myalbum/photos/thumbs/6672.jpg] | [http://datsun1200.com/modules/myalbum/photo.php?lid=6672 http://datsun1200.com/modules/myalbum/photos/thumbs/6672.jpg] | ||
Revision as of 00:49, 22 April 2008
DOHC Heads for A-series Engines.
Contents |
GM Vauxhall DOHC head on A block
This is the legendary Nissan 'AY' factory race head on a 1200 block. It's a pushrod/OHV design that features crossflow porting & two plugs per cylinder.
GM Opel/Daewoo/Vauxhall Ecotech Head
Nissan DOHC Head
(GA16 ?)
Nissan DOHC Head
Mazda b6
KA24E
Osgiken
E15 SOHC
Will the new E-series heads might fit on the A12 engine? Note that the 1982 E15 engine design is based on the A15 engine:
- Same bore & stroke <li>Same bore pitch (82.5mm - 90mm - 82.5mm) <li>Lighter casting <li>Similar head gasket <li>E15 is overall shorter to fit transverse applications (FWD) <li>Crossflow head with semi-spherical chambers improves on A15: HP and torque are both up 3% <li>The E15 uses a jackshaft "in the area where the camshaft is mounted on the A-series engine" to drive the fuel pump and oil pump (the distributor is driven off the front of the cam) </ul>