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Royal Enfield – Cast iron Engine assembly photopost

Earlier today I had tweeted some pictures about a Royal Enfield Engine that I got a chance to watch being assembled.. As twitpics are things that flood away, I decided I will bring them into a post here.

Here is a tray full of stuff that goes into the engine

The nuts, and bolts and gears that make Enfields run..

The nuts, and bolts and gears that make Enfields run..

And here is the mega, 8KG crankshaft that goes in..

The crank

The crank

The Crank case that is being prepared to receive the above mentioned piece of iron.The bearings are carefully set in place

Bearings being set in the crank case

Bearings being set in the crank case

The stay bolts are fixed on one side of the case.. Sealant poured on a sand papered surface. The green gasket is then set in place.

Gasket being set

Gasket being set

The massive crank then goes into the case. Before the second half of the case goes over it and closes it

The Crank going into a prepared case

The Crank going into a prepared case

The Crank case being bolted up

The Crank case being bolted up

Now that the Crank case is sealed and bolted in place. It is time to fix the cylinder block. But first the Piston is fixed on the connecting rod. (The rings have to be adjusted to slip the cylinder block into place) Note the gasket that is put in place.

Fixing the piston on the connecting rod

Fixing the piston on the connecting rod

The cylinder blcok has been slipped on to the piston and fixed on the crank case

The cylinder blcok has been slipped on to the piston and fixed on the crank case

Now goes the cylinder head.. before which, a head gasket has to be fixed to seal the joint. The head houses the valves, the decompressor, and the spark plug

The inside of the cylinder head

The inside of the cylinder head

Assembling the head on the cylinder block. The easiest part so far

Head being set

Head being set

The timing mechanism - which will drive the valves through the tappet -pushrod mechanism

The timing mechanism - which will drive the valves through the tappet -pushrod mechanism

Now theoritically the engine is “built”.. But there are several steps to make it functional. The dynamo has to be fixed, timing gears have to be set and tappets connected. Valve heads need to be covered.. fuel, power.. But then, I had to rush.. so this is all I could catch. Still way too cool for an accidental learning session. And no – that is not Goddess.. :)

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Posted in Randomness.


2 Responses

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  1. KD says

    Hey Satish.. I will look for an image. But the bearings were all hammered in during the assembly process.

  2. satish says

    Did the mechanic use hammer anytime while setting the bearings or putting together the crankcase halves? If you have any photos of setting the bearings I would love to see them.



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