Quote:
Originally Posted by BMRLVR
The moral of this post is that having a skilled craftsman measuring and building you an engine is definitely worth it, as good as machines are, many times we have had to send back brand new parts that were supposed to be within spec but were indeed not even close. If you work with this stuff all the time you realize that machines, while as amazing as they are, do not always build the perfect parts. Finally, Even with automated assembly there is always a programmer or machine operator that has to be added into the equation too!
P.S.: Swamp, their is indeed evidence that hand fitting of pistons does offer benefit and it is not merely anecdotal, it is a fact and has been proven. While it may not always be measurable in terms of power, it will definitely be measurable in longevity. Excessive piston to bore clearance will result in piston slap and piston to bore clearance that is too tight will result in scuffing and excessive wear. Over time piston clearance that is too tight or too loose will make the bores wear out of round which can eventually lead to oil burning and/or loss of power. Basically if you want an engine to run quiet, make power and last, you need to ensure all of your measurements are nicely within spec. ( I know you know this but I thought I would add my $0.02)
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Definitely agree with you on all of this! Took the words out of my mouth.