Thread: EEK Motor Back From Machine Shop To Find This!!

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Originally Posted by 34_40

I wouldn't blame the shop when you handed them the parts and said "use these".
How was the wear calculated? Since you provided the pistons, you must've measured the bores? Yes/ No?

Since this is a budget job, just keep moving forward, that line won't amount to much, you'll never feel it in the butt dyno!

As a professional the shop is obligated to do the job in a workman like manner. If the score could not be removed to accommodate the pistons supplied, he should have stopped and informed the customer of the options.
I'm in agreement with several others, if the score can be felt it needs to be fixed. The score not only allows pressure to escape past the rings leading to oil contamination, but also diminishes the pressure applied behind the rings lessoning ring to cylinder wall tension, usually resulting in the rings not seating properly and early failure. And as Jerry implied, installing new pistons without balancing the rotating assembly is asking for trouble too, budget or not it is a bad practice.
As a wise man once told me, "sometimes you can't do what the customer wants"..

Originally Posted by 36 sedan

As a wise man once told me, "sometimes you can't do what the customer wants"..

And the oldest rules in business??
#1 - the customer is always right!
#2 - when the customer is wrong, see rule #1

We still haven't heard how the wear was measured and how the decision was made to use a certain piston. Other than the OP wanted to achieve a certain engine size.

So now "some" on here want to see this shop in a bad light..

I'm beating on this deceased equine because there is a lesson in here. And not just with a machine shop!! Whenever you walk into an establishment with parts that you've selected to use, you place that business into a position that they may not be comfortable with or deserve, and instead of being in a relationship of customer and service provider, you set the stage of a "Job Shop". That is, customer hands you parts and you install same.

I'm not a legit business, but I do work on the side like others here. I've had this same scenario happen to me, and I was left with the black eye. Even though the guy said just install what I gave you.. it somehow becomes the shops fault when the desired results aren't achieved.

I hope I conveyed that there are always two sides to the story and that others in the future that may read this consider parts selection and working with a shop... in this case the wear was probably more than the piston size selected.

Perhaps Uncle Bob can add some eloquence to my feeble attempt..

Originally Posted by 34_40

Perhaps Uncle Bob can add some eloquence to my feeble attempt..

Not feeble at all, a very well written and eloquent point if you ask me!