Engine re-assembly techniques

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Originally Posted by Blknight.aus

y
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I used to believe that you oiled both sides of the shell but was then shown the difference between the clearances (using plastigauge) of shells that went in dry and shells that went in lubed on the back.

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Missed this the first time and yes, a big no-no.

It gives you totally false clearances, plus lets the shell move, plus can and will distort the shell when bolted together giving you high and low spots.
I've also been told it doesn't give the bearing adequate heat transfer into the cap, and it makes sense in spalsh feed engine or compressor but with pressure lubrication the flow of oil flow into and out of the bearing should be doing that IMO.
That's why we have pressure lubrication.

On the shells I pulled from the Tdi you could see the patches where oil/grease had been trapped behind them from the factory, slightly distorting the shell, and the stress fractures across the shell face from them. (although I still think they were a batch of faulty shells anyway that created the failures)


As an aside, anyone else over getting their hands greasy and working on vehicles as they, umm, get a little older ? :angel:

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Originally Posted by rick130

As an aside, anyone else over getting their hands greasy and working on vehicles as they, umm, get a little older ? :angel:

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Yeah, the skin of my hands doesn't cope like it used to. I found some "Du-It Tough Hands" cream that seems to help but I try to avoid more than 1 engine/clutch/g-box job a month.

I already have psoriasis which gets worse with exposure to hydrocarbons, synthetics, sugars and yeasts....

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Originally Posted by rick130

As an aside, anyone else over getting their hands greasy and working on vehicles as they, umm, get a little older ? :angel:

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I think that is called financial freedom :)that comes with accumulation :D that comes with age:( and less pursuits that require getting dirty.

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Originally Posted by rick130

As an aside, anyone else over getting their hands greasy and working on vehicles as they, umm, get a little older ? :angel:

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Yes - I think I've spent about ten times as long working on these damned things as actually driving them. And now I always wear cheap rubber gloves. I thought they were for wimps until I took apart a couple of old LT95s that were covered in filth . . . now I always use these: Welcome to the official Vileda website!

Cam bearings the amount of donks that get put together with the same old **** bearings and then lack oil pressure

Talking of using things behind bearing shells and loctite in inappropriate places, many moons ago a work colleague was rebuilding his twin cam Toyota motor in the workshop.
He'd heard of them occasionally spinning a bearing so decided to assemble the crank with loctite behind the main bearing shells. It was enough to clamp the shells firmly on the crank, and no way it would turn.

Took him ages to remove the cured Loctite from everything....

Steve