b7100 Engine Reassembly, Oil's and Such?

[KubotaVT]

I'm reassembling my Kubota b7100 Engine after a re-ring and valve hone, and I'm just wondering if I can use new heavy duty diesel oil for all parts such as valves, valve springs, rocker assembly, etc. Is any other sort of lubrication required? This may seem like a silly question, but I don't have a service manual in front of me AND it's my first go around at a small diesel engine. Thanks for any help.

Also, any other assembly tips that you guys might want to give? THANKS!!

 

[BeezFun]

In my vast experience rebuilding 1 engine, that's what I did. I wear rubber gloves and smear everything that moves to make sure the surface is wetted with oil. Turn it by hand before you start it to see if anything goes crunch. Don't forget to put oil in it before you start it.

 

[Mac25]

Several manufacturers make an engine rebuild grease that you can apply to valve stems, push rods, cam bearings, etc. Obviously dont apply it to cylinder walls or piston rings. Just make sure you change the engine oil and filter after about 10 hours or so. NAPA sells one that is called Lith-Ease.

 

[Gator6x4]

I like a fifty-fifty mixture of STP and SAE 40 motor oil. The STP makes everything slick (careful and don't drop something) and provides good protection on initial start. Don't forget to wipe down the cylinder walls also. The new rings will need something to slide on.

 

[Reg]

2-stroke oil used to be the standard assembly oil, I'm not current with "the done thing", but when I re-build stuff that is what I use.

It goes away very soon (-:
and it isn't incompatible with anything.

 

[whitetiger]

Use the same oil for assembly as you will be running in the engine. If it is good enough for cold starts and long term use it is good enough for assembly lube.
DO NOT use STP oil treatment as engine assembly or even dump it in any decent engine at all. It works great in gearboxes though. STP can keep rings from properly seating and plug small oil passages and should not be mixed with modern oils.
Lube all components as you assemble your engine, put it all together but leave out the fuel injectors. Add oil to crankcase, with the kill cable pulled or electrical shutoff unplugged, spin the engine over with the starter for 15 seconds. You should have oil pressure as per gauge or light on your dash. After letting the starter cool off for a minute spin it again. Check oil level, top off to full mark, install injectors, bleed fuel system and start it up.
I have been rebuilding engines professionally for over thirty years and have learned the hard way.

 

[grossgary]

when rebuilding gas engines "assembly lube" is used, it's a very interesting tacky/sticky kind of stuff.

i would use that if it's diesel compatible (i would guess that it is). if it is, then that's probably the best thing to use since that's what it's made for.

i've used standard oil before as well like whitetiger suggested but favor assembly lube.