As per title, I'm wondering if a twin cam head was ever produced by Nissan, as I found one that claims to be from the golden era of racing that was supposedly on a 1300.

Twin cam...no
Theres a hemi head crossflow design out there though

Just sold for drug money whatever it was lol

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WOW!

That's the rear Nissan race hemi AY12 engine. The DOHC version (AZ12 engine) was never made


Great pictures i never seen details like those. Too bad they didn't get a picture of the combustion chambers

* 1973 Nissan works engine
* 160 horsepowers @ 8,800 rpm
* Single-cam engine
* overhead valve (pushrod engine)
* dual rocker arms

Similar to the Chrysler Hemi, except it doesn't appear to have top-down spark plugs but rather they are on the side?

At the bottom of this magazine article page is the design for the DOHC A12 -- buy it's only a drawing

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  Auto Technica 1982 no. 164 E64F0468.jpg (192.29 KB)


  AY12 engine. The shape and size of the head cover are completely related E64F0467.jpg (91.24 KB)


  Crossflow OHV Head A12 E64F0430-1.jpg (79.36 KB)


  E64F0464.jpg (173.17 KB)


  Nissan Crossflow AY12 engine E64F0465.jpg (170.43 KB)

hi ddgonzal,

thanks for the extra info, much appreciated. here are all the pics i managed to get from the listing.

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Looks like the LZ14 16v cylinder head.

Yup that's an LZ head and the price is actually really good.

That is the Twin-Cam head that was just sold Sunday at auction for $5000


The auction title was Quote:Yes, that would be the LZ14 engine which was used in the 1973 Sunny PB210 race car


The auction description was a bit confused:
Quote:However, the Nissan R390 was made in the 1990s, used a V8 and was not a Sunny variant. The engine used in the Sunny Excellent was an L-series engine, and the twin-cam racing version was the DOHC LZ engine


All our previous LZ photos show square covers over the cam ends:


But Nissan Global explains Quote:Yep, hard to see, but the early LZ race car seems to have them. Here's a photo from the old ratdats site:


That seems to match the auction photo:





and final confirmation, the combustion face photo matches the photo from Nissan Global:


auction photo




Here's the last photo from the auction. I think its the exhaust ports

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  green top LZ20B.jpg (34.81 KB)


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Just in case there are no purists for the A series, I found the A14 & A15 short blocks
just as heavy as the stock ca18de and L16 short blocks.

The A14/A15 are heavy nuggets but the L series heads are heavier than A series.

The early non pollution L16 is overlooked engine that can take large pistons
L18 crankshaft and a roller rocker NA20P heady from Alibaba for almost 2000cc

KA24de fits easily to give a cheap twin cam L series hybrid that can use webers.
This one is a highly tuned L series with Ka24de head that made 284hp @ high 7k rpm.
Built by Les Collins for a Perth dude that once owned my vb10 wagon.

http://lescollinsracing.com/images/Engines/Nissan4V.jpg