Sunday, April 10, 2011

Practical Work


The block of the engine after we removed the head.

Checking the head for warpage using a straight edge (steel rule) and feeler gauge.

Measuring the overall length of the valve spring using the verneer caliper.

Measuring the lobes for cam lift using the micrometer


Measuring the strength of the valve springs. All of my springs were not springy enough and shims need to be added.

Checking bearing journal clearance on camshaft using plastigauge.

Torquing down bearing caps using torque wrench.


Inserting valve, valve springs, collets and washers using that special tool.

Torquing up cam pulleys using Jiejun's electronic torque meter. Here I forgot to put the plate behind the pulleys so I had to take the pulleys off, put the plate in and put the pulleys back on.


Cylinder head with the plate and pulleys on.

The assembled head.

Removing the water pump from the block.

Bottom end with the sump removed.

Oil strainer

Removing the cambelt pulley. I put a block of wood between the crankshaft balancer and the block to prevent the crankshaft from turning while I undid the nut.

Removing the oil pump.

Measuring the depth of the cylinder at several intervals so I can draw a graph as an exercise.

The assembled cylinder head.

The engine block with everything removed.

The engine block with the pistons removed.

The pistons, crankshaft, and bearing caps lined up on the bench.
Keeping them lined up makes it easier to remember where each component
goes and also keeps the bench looking tidy.

One of the removed pistons.

Checking a conrod for being bent. This one is bent beyond specs as you can see
the bottom prong bit does not touch the plate, whereas the top one does.



Checking the crankshaft main bearings for taper and ovality with a micrometer.

Checking the crankshaft for run out using the DTI.
This crankshaft had virtually no run out.

Torquing down the big end bearing caps. I also checked the journal clearance
 using plastigauge.


Torquing down the main bearing caps. I also checked for journal clearance here using
the plastigauge. All clearances were good.

This is the finished engine that we assembled after we have taken all of the measurements.
We found that most components were in good condition, except for one cylinder that had
some scuffing on the thrust side of the bore.

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