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differences between E, J and A series engines?


gBaeza

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There is a flat plate above the distributor that is stamped with "E" or "J", also the "E" distributor ois more rounded that the "J" distributor.

The "E" distributor has 2 bolts in the plate and block holding it on, the "J" distributor only has one in the plate and the block.

 

Of course the distributors can be switched between the 2 different blocks, so nothing is for sure except the block ID stamp in the flat spot.

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The "A" series is easy to figure out, the thermostat cover is bolted to the front of the head itself, it"s on its side with the bolts pointed towards the rear of the engine while the J series the thermostat cover is flat with the bolts holding it on going down towards the ground.

A series thermostat

DSCN7347.jpg

J series thermostat

DSCN7349.jpg

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  • 2 months later...

Suppose you guys are aware that the original "E" and "J" engines were licenced from Austin or BMC of England. Identical to there A and three main B engines. 

 

Just a little trivia!

 

Kurt.

 

 Nissan did collaborate in the early '50s till '58 to build Austin A50 cars under license (assemble actually from British parts) but quickly they were made entirely in Japan. This gave them access to patents and tooling which they used to design their own homegrown, but in typically Japanese fashion, much improved E engines. The E, J and A series were all Nissan designs evolved from the Austin B series. I doubt Nissan was licensed to build their own engines.

 

Nissan did switch to metric fasteners (mid 60s?) but retained the British Standard Pipe Taper threads in the block and the oil pressure sender up into the 2000s maybe even today.

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I believe that the first E series, not the one that evolved from from the A series that had an overhead cam, was identical to the BMC A series. I have no idea what it was fitted to but have seen pictures of that engine.

 

The Datsun A series has very obvious BMC heritage but is a better engine. I'm suspicious that British Petroleum had a hand in designing British engines cause they all leaked oil. :rofl:

 

If I remember correctly I had an acquaintance that fitted a Datsun head to his MGA back in the sixties. 

 

Kurt

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 Nissan did collaborate in the early '50s till '58 to build Austin A50 cars under license (assemble actually from British parts) but quickly they were made entirely in Japan. This gave them access to patents and tooling which they used to design their own homegrown, but in typically Japanese fashion, much improved E engines. The E, J and A series were all Nissan designs evolved from the Austin B series. I doubt Nissan was licensed to build their own engines.

 

Nissan did switch to metric fasteners (mid 60s?) but retained the British Standard Pipe Taper threads in the block and the oil pressure sender up into the 2000s maybe even today.

 

Nissan switched to metric vs SAE fasteners in export 1968 models with the debut of the 510 model, so in reality the switchover came in 1967 for future 1968 model cars and probably trucks.

 

Engine design went both ways.  The Datsun type R 1600 engine bears a very marked resemblance to the later Austin 2 liter engine down to the fluted valve cover.  I doubt that parts are interchangeable, but the external resemblance is uncanny.

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I believe that the first E series, not the one that evolved from from the A series that had an overhead cam, was identical to the BMC A series. I have no idea what it was fitted to but have seen pictures of that engine.

 

The Datsun A series has very obvious BMC heritage but is a better engine. I'm suspicious that British Petroleum had a hand in designing British engines cause they all leaked oil. :rofl:

 

If I remember correctly I had an acquaintance that fitted a Datsun head to his MGA back in the sixties. 

 

Kurt

You're not far off. Turns out there was a BMC gasket contractor scandal in the late 70's that undoubtedly gave the BMC cars their much hated reputation for leaking oil. The contractor was basically taking the money and giving back a vastly inferior product, not of original spec. Sometimes, it was proven, the gaskets were actually made out of old newspaper.

 

Too bad BMC didn't catch on sooner, they might have saved the company.

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Well the British auto industry had a lot working against it. Not the least of which was the international money scheme. Just like we have today. No way can the US compete against $30 dollar a month Vietnamese labor.

If BMC had made some trade deals with low wage, at the time, Japan then things might have been different.  

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