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Re: Nippon Pistons for A15
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One thing I've notice over the years is that China-made pistons don't always match the Nissan part numbers

Nippon is the name of a country. NPR makes rings & sleeves but apparently not pistons. Can't find any company "Nippon" that makes piston. So the pistons presumably are made elsewhere


With A-series pistons the main consideration is to match the piston to the combustion chamber. Compression ratio is less important. The type affects the flow performance

the photo doesn't seem to match other G34 pistons

G34 is an offset-dish piston, used with H89 heads and other newer types including CAL emissions engines
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H98/H92 is the same offset-dish type but different depths (H98 used in CAL engines, H92 used in JPN engines) .the depth affects the compression ratio but the offset interacts with the head and so determines the flow

All moot if you are not using an A15 cylinder head. The GX head is higher flow than any A15 head and was designed for a flat-top piston (10:1 with an A12 with the special thin head gasket)

Remember that 11:1 compression is good for pump gas, but anything higher might require special fuel

Custom pistons are $400/set to $1200/set so are not cheap

Posted on: 3/17 23:47
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Re: Weird cylinder head
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There are two kinds of H74 heads

yes those are H74 air-passage heads
* For air-induction. H74 was used on JAPAN B210 Van 1975-1976 with A12 engine

Induction was used in Japan. Also used in USA and was more common than smog pump (air-injection) which was only used in USA if i remember correctly. Both do the same thing but the pump steals some hp to compress the pump

H74 head came either with or without air passages. With air passages they were usually machined for an open chamber instead of having heart-shaped chambers

Performance same as H72 with same type of chamber. In other words, open-chamber H72 is similar to open-chamber H74. Heart-shaped chambers burn better than open but create more NOx. Open chambers have less NOx pollution but don't burn as efficiently so they added air induction to burn the leftover CO in the exhaust

Later on in 1977 Datsun started switching to high-swirl heads which have low NOx and low CO without need of air induction. By 1982 all A-series heads in USA, JAP or USA were this better type (either using off-set pistons or shaped ports to induce extra swirl)

Posted on: 3/10 6:03
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Re: Nippon Pistons for A15
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A15 engines are all the same, from 1979-2011. However the pistons vary, with about six different designs to match three different cylinder head chamber shapes. see details at Pistons#A15. Forklift pistons as far as I have seen are identical to various car pistons

Posted on: 3/10 5:20
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Re: Sunny spotted in old movie
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wow in the same scene, a brown B310R passes by, a pale yellow Datsun 720 and a brown WB310 Sport Wagon. those 1970s colors

and a few minutes later a sundew green 1200, a brown B310 Coupe and even more Datsuns

The plate is similar to this 1200's plate:
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the car to the left is a chrysler Duster like my old one but a bit newer, maybe 1975
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Attach file:



jpg  NzTYKx8DA9k_0418.jpg (59.14 KB)
174_60482a3899b73.jpg 1200X514 px

Posted on: 3/10 2:08
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Sunny spotted in old movie
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It's my day off, and I spotted this in an old movie

appears to be a 1979 B310 GL 2-door, with California blue-plate (1970s) or maybe a 1980-1986 7-digit version

Attach file:



jpg  NzTYKx8DA9k_0418_B310.jpg (33.02 KB)
174_60482401ee42b.jpg 680X610 px

Posted on: 3/10 1:43
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Re: Wanted 3.9 or 3.7 H165 diff centre
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Not too hard to find. They came in Datsun 710, Datsun A10, 810 and S110 and Nissan C210

technically they are 3.889 gear ratio (35:9 teeth)

Posted on: 2020/3/31 5:09
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Datun Sunny spokesman has died of Coronavirus
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Alan Merrill the B110 guy
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To Britons he's famous as the Arrows' lead singer. His 2020 tour of Europe will be canceled

News: Alan Merrill

Posted on: 2020/3/31 5:03
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Re: 1200 Sedan tail light hardware needed
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So the rim is chrome-plated pot metal

There is no aluminum anywhere on the rear combo light to my knowledge

Posted on: 2020/3/31 4:55
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Re: one of a kind 3d printed radio mask
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Bprojects sells them
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Does not fit all 1200 radios, the opening is taller than some

Push-button radio seems to be same size (hitachi and clarion models)
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Ferris radio appears to be shorter opening
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EUR radio might need a wider opening?
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AM/FM seems quite different
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jpg  13822_5365c4b11f5c3.jpg (23.30 KB)
174_5e7d8d0e05e62.jpg 500X375 px

Posted on: 2020/3/27 5:19
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Re: ALLOY CENTER
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I've never seen a light alloy H145. Only cast iron H145. The alloy units apparently only came in Wagons

H150 only came in 1977-1982 B310 and is only fractionally stronger than H145. A 5.7 inch ring gear is not very big

Posted on: 2020/3/27 4:46
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