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I'd say it looks good. The currents are close enough. You still can't get a full 100% of rated HP from it though.

I would tend to guess that is a problem that many companys have. Even major engine rebuild shops that specialize. These days there is a lack of the good old skills, and too much pushing to get a job out fast. I think one place to start, is "SLOW DOWN" it would be better to take twice as long as...

drwebb, so if this pb has a lubing effect on a valve face or seat. I have some questions. 1 Since the whole reason for lubrication is to reduce friction, please explain where there is a friction action? And why this has no effect on a softer "stainless steel" valve? 2 So how come to battle the...

Most all manufactures print operation manuals for their engines. And in those manuals are tables of what the approved viscosity oils are, and for the various ambient temperatures. What size engines are these? And what manufacture? How many hours on them now? In those temperatures SAE 40 would...

Agreed, that is why I used SIMILAR. Which means a computer that is compairing information from feed back devices, to adjust the fuel ratio and requirements for a given load and speed. It was a quick and simple explanation.

By driveline do you mean uninversal joints? Or something else? I agree with Gregg. Sounds like a driver problem. Are they power shift transmissions? Are there alot of hills - grades?

Lately it is a quality issue with bearings. Probably from out sourcing. And metric english conversion etc. Check the bore that the bearings fit in if they are on spec. I'd take the bearings back. Try another manufacture.

Are you torqueing the rod caps? How are you setting the bore gauge? If still the same. You could go with a coating that will shrink them.

Well the way the drawing looks that the load is balanced and will not push at all against the spring. To measure torque you have to have some kinda arm, acting against a scale of sorts. And if the radius of the arm changes at all that will affect the accuracy of the reading.

Have an electrical prelube pump to prepressurize the engines oiling system. Have a good oil cleaning system. And follow a good oil change program. Don't extract full design Horse power. Run at lower rpms, and lower power settings. Avoid idling for long periods. Avoid starting and stopping. No...

Ah the old lube fuel pump deal. I sure hope some one has told the manufactures of years past, that built jerk pumps, and direct injection single plunger distributor pumps for gasoline injection, that gasoline won't lube it. Also the present day electronic fuel injectors too. Oh and the good old...

If the shaft is easy to remove, check it between centers. You would have to know how to use an indicator and height gauge or surface gauge, and surface plate to check it on Vee blocks. If it is a very large shaft, you will have to use either laser or optical alinement of some sort. Ralf2's idea...

Just another twist on the laser light spot. Instead of a light beam use a hypothetical wire or string. Makes Nbucska's experiment very correct.

Usually the gear blank is located at the hole, and either hobbed or broached. If it is not concentric, then either the operator or the machine is at fault and should be caught at inspection. Or if at a later time after heat treatment etc. the bore is honed, then it could be at that operation...

One indicator mounted on one journal and swing the other journal. That is if they are separate from one another. Like a motor shaft that is to connect to a pump shaft. If it is a common shaft, then it can be located in a lathe or vee blocks or rollers or bearing halves, and while rotating it...

Just use millimeters. On metric drawings in the US it is always given as millimeters. Anything else is confusing like has been pointed out with your 10.5 centimeters deal. Remember there's 10 millimeters in each centimeter. That .5 represented one half of a decimeter.

You can use special thread mic's, and the good old mic'ing the 3 wires or pins technique. Internal threads you will need some kind of gage. In the long run the gages will pay for themselves. Way better than scrap parts and wasted time.

Full Authority Digital Engine Control, don't know to many specifics on it. But kinda operates similar to the electronic controls for automobiles. But of course taking into consideration the flight requirements. Lycoming system is called EPiC.

Those are some very high cylinder head temps. I'm suprized you haven't had some major problems from it. You mention dusty, so are you getting alot of accumilation of dirt on cooling fins? Mogas, at least here in the USA has no lead in it. I suggest av gas with lead. Are you real sure of the...

Not familiar with that equipment you have. But The torsional vibrations are the twisting and untwisting of the crank shaft. The greatest amount of vibrations will be at the opposite end where the power is taken from. That is most always the end opposite the flywheel. So to show the overall...