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   All Posts (ddgonzal)


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Re: A13 H62 block speck
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I like to think of the A13 as a "stroker" A12. Same bore as the A12, but with a factory stroker crankshaft. Which crank was used the next year for the A14

The engine is fine. Not as many CCs, nor as much torque as an A14 -- but better than an A12

To compensate for the increased stroke, longer rods were used in a redesigned, taller block. This "tall block" design was also used for the 1975 A14. Not the same block, but similar. And there was enough room in the tall deck block to put an ever larger crank, which became the A15 in 1980

The downside is the tall deck engine is a bit heavier. It's the same length & width as the A12, but because it is taller/higher by 15cm, it weighs 6kg more. This was remedied with the "short-deck" A13 of 1980, which uses the lighter A12 block

The tall block height is not much of a problem. It will still fit under the hood of a 1200 as will any A14 or A15

Posted on: 2/2 21:30
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Re: A13 H62 block speck
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Hola Dariel

H62 was made one model year only: 1974. It is 1288cc and was only used in North America-spec B210

Specifications:
* Bore: 73mm (same as A12)
* Stroke: 77mm (same as A14)
* Compression Ratio: 8.5:1
* 75 HP @ 6000 RPM
* intake ports: small oval (bigger than A12)
* open combustion chambers (early type of emission reduction)
* large valves (same as A14)
* Block: tall deck (same height as A14/A15, which is 15mm more than A12)

For more information, see our tech article: Old A13

Attach file:



jpg  1288.jpg (38.63 KB)
174_63dc1f5e01d0a.jpg 864X640 px

Posted on: 2/2 20:39
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Re: Nissan twin cam race heads for A series, were they ever made?
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That is the Twin-Cam head that was just sold Sunday at auction for $5000


The auction title was Quote:
NISSAN Sunny Excellent Racing Head Twin Cam Head for Race Nissan Works B110 B210 B310 TS Sunny TS1300
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:
サニークーペエクセレントに搭載されたR390型エンジンのツインカムヘッドだと思いますが、資料が少なく断定できません。
非常にコンパクトなのが印象的です。 [I think it's the twin cam head of the R390 engine installed in the Sunny Coupe Excellent, but there are not enough materials to be sure.]
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:
Open in new window

But Nissan Global explains Quote:
The head cover has a rounded shape that is different from the later flat type
Yep, hard to see, but the early LZ race car seems to have them. Here's a photo from the old ratdats site:
Open in new window

That seems to match the auction photo:
Open in new window




and final confirmation, the combustion face photo matches the photo from Nissan Global:
Open in new window

auction photo
Open in new window



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

Attach file:



jpg  ports.jpg (24.49 KB)
174_63db83701877a.jpg 600X451 px

jpg  green top LZ20B.jpg (34.81 KB)
174_63db83fd8a947.jpg 784X377 px

jpg  PB210-LZ.jpg (74.97 KB)
174_63db845fcfda8.jpg 1004X720 px

Posted on: 2/2 9:38
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Re: Nissan twin cam race heads for A series, were they ever made?
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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

Attach file:



jpg  Auto Technica 1982 no. 164 E64F0468.jpg (192.29 KB)
174_63da0f1011268.jpg 1442X2048 px

jpg  AY12 engine. The shape and size of the head cover are completely related E64F0467.jpg (91.24 KB)
174_63da14f829ef8.jpg 932X768 px

jpg  Crossflow OHV Head A12 E64F0430-1.jpg (79.36 KB)
174_63da159038437.jpg 1150X882 px

jpg  E64F0464.jpg (173.17 KB)
174_63da15e3201fb.jpg 1554X1536 px

jpg  Nissan Crossflow AY12 engine E64F0465.jpg (170.43 KB)
174_63da16048e0cc.jpg 1600X1243 px

Posted on: 2/1 7:34
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Datsun 1200 surrounded by SWAT team
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I was listening this afternoon to Totally '70s and a song came on that I haven't heard for decades ... it led me to this. I was in high school in 1979, I remember the song "I Don't Like Mondays" and had heard it was about a shooting. But until today I didn't know that it was about a school shooting

Anyway, an orange Datsun 1200 coupe parked in front of the girl's place. And maybe a white one up the street?

YouTube V I D E O :1979 San Diego school shooting

Attach file:



jpg  SWAT team wuPOeQRKyMo.jpg (28.61 KB)
174_63d9f532e6ee9.jpg 859X594 px

Posted on: 2/1 5:14
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My First Car
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Rob Margell of the Drive team reminisces about the first car he ever owned

My first car: 1972 Datsun 1200Quote:
I wanted a Gemini coupe ... Instead, I got this, a humble four-door 1972 Datsun 1200.

The year is 1985 and I’d just passed my licence test and was now in possession of those very public coming of age markers, the ‘P plate’...


It starts with this photo from the 1972 brochure
Open in new window

Posted on: 1/20 3:16
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Re: WANTED - A/C Compressor to Suit A Series Brackets
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There's one at auction now for $50

Looks like an aftermarket bracket, generic, but similar to the Datsun 1200 JDM 1979 aircon bracket

Need to drill the four mounting holes in the correct place

for reference: 1979 Datsun 1200 JDM bracket
Open in new window

Open in new window



auction photos. Supposed to be for Sunny Truck, Skyline C210 and Corolla Trueno

Attach file:



jpg  Compressor bracket with adjusting pulley.jpg (35.59 KB)
174_63c632f538f1a.jpg 692X624 px

jpg  12cm height.jpg (64.39 KB)
174_63c6330eb1ad1.jpg 900X1200 px

jpg  17cm length.jpg (46.06 KB)
174_63c6332d76b89.jpg 848X640 px

jpg  10 cm between holes.jpg (54.51 KB)
174_63c6333e2ef8d.jpg 769X865 px

jpg  about 6cm of adjustment.jpg (76.77 KB)
174_63c63349bef26.jpg 1200X900 px

Posted on: 1/17 5:34
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Re: WANTED - A/C Compressor to Suit A Series Brackets
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I haven't seen a 1200 with A/C in years

Have you considered using a late-model electric A/C compressor from a Ford or Toyota other car? No need to bolt to the engine, and the air conditioning works with the engine off!

Posted on: 1/17 1:00
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Re: Bumblebee
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Nice wheels! The minilite-style 8 spoke wheel is classy (like all 8-spokers) and yet sporty. What brand are they? Look fairly wide

Gearlocks are not something i have even seen here in USA. However all our 1200s (and all cars from 1970) come with Steering Lock standard, which means they can't steer the car without the key. Which mean that "hot wiring" will start the engine, but they still cannot drive the car...

Posted on: 1/16 23:31
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Re: Lowering Of Engine
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what some have done:
1. Notch the engine crossmember, so that the unmodified oil pan will clear lowering

2. Fit shorter engine mount insulators (or eliminate them, "hard mounting" the engine, as some race cars do)

3. Use longer bolts and spacers for the transmission crossmember to lower it


#3 is optional, you don't have to do it, but at high rpms a little vibration may be introduced via the driveshaft angle. But lowering the gearbox the same amount will make it aligned correctly

Posted on: 1/16 23:22
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