Andy,
Thank you. As you have clearly witnessed, there are two ways to install
the thrust washers. 1. The correct way (outward away from the main
bearing) and 2. the incorrect way (any other combination). The grooves
are to provide lubricating oil a path to work its way between the
bearing surfaces. Without this channel, you can see the result.
Regards,
Joe Curry
Andy wrote:
>
> Just a short while ago there was much discussion about which way the
> grooves on the thrust bearings faced. As I was getting up the nerve to tear
> down my engine I read them all. Well there are 4 combinations and it
> seemed like opinion was split evenly between all of them.
> As I tore down my engine it was obvious it had been rebuilt as the caps
> were all numbered - very little wear on the main and big end bearings. My
> hopes were up.
> Pulled out the thrust bearings today. The rearmost bearing had the grooves
> to the rear of the engine, no wear. The foremost bearing also had the
> grooves to the rear of the engine and had machined a nice little groove in
> the crankshaft that I hope the machinist can build up for me.
> >From experience it would appear that the rearmost has the grooves to the
> rear of the engine and the foremost has the grooves to the front of the
> engine.
> Those of you who said the grooves go against the moving surfaces, go to
> the head of the class.
> Thanks to all of you who gave any answer, they all count.
> Andy
--
"If you can't excel with talent, triumph with effort."
-- Dave Weinbaum in National Enquirer
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