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A13 H62 block speck
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Hello guys,

I have on hand Datsun A13 engine block with crankshaft, letter stamped H62. I am looking all details spec, Of this engine, stroke, and year. Thanks for any help.

Thanks you,
Regards,
Dariel

Posted on: 2023/1/28 22:51
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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: 2023/2/2 20:39
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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: 2023/2/2 21:30
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Re: A13 H62 block speck
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ddgonzal I appreciate and Thanks you for The detail and information...

I going to upload picture of my engine block just in case I read information a few year ago in this group. that the block water Plug pattern change by the year? That identify if early or late production?

Regards,
DarielQuote:

donditaa wrote:
Hello guys,

I have on hand Datsun A13 engine block with crankshaft, letter stamped H62. I am looking all details spec, Of this engine, stroke, and year. Thanks for any help.

Thanks you,
Regards,
Dariel

Posted on: 2023/2/6 20:00
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Re: A13 H62 block speck
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Yes, please upload pics of the left side (with core plugs). Actually all photos will be appreciated!

Posted on: 2023/2/8 6:50
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Re: A13 H62 block speck
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Hello ddgonzal I send you the picture to your yahoo email that appears on your profile, I try to upload here but sistem don't allow me to do it I try 2 method by phone and my laptop ... Thanks you

Posted on: 2023/3/22 14:31
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Re: A13 H62 block speck
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I did receive the photo


It has a file size larger than 200KB so it will not attach to this site. But I have used compression

Attach file:



jpg  _DATSUNA13.jpg (191.04 KB)
174_641b47adf22d0.jpg 1500X1125 px

Posted on: 2023/3/22 18:23
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A13 H62 block VS A14 block
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Some casting changes

The first A14 block
* moved the core plug (faint yellow was the A13 location)
* added another set of accessory bolt bosses (circled area)

Attach file:



jpg  H72 casting changes.jpg (46.77 KB)
174_641ceddc65490.jpg 712X404 px

jpg  A13 H62 block left side.jpg (133.97 KB)
174_641cef297f0b9.jpg 960X536 px

jpg  A14 H72 left side block MGP1096.jpg (41.78 KB)
174_641cef3cc7ca5.jpg 712X404 px

Posted on: 2023/3/24 0:31
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Re: A13 H62 block speck
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Ok Thanks for The details

Posted on: 2023/3/24 1:36
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