Engine Blueprinted

Back in the day albeit Carbs etc. Where I worked blue printing involved stripping the motor and as someone above pointed out we already had measurements etc. Point was due to manufacturing tolerances lots of parts wouldn't be exactly what the engine designer specified. The object of blue printing was exactly that ie bringing the motor back to blue print specs (clue is in the terminology) So moving parts, pistons, con rods, cams and any thing else you can think of are weighed and then machined if necessary to bring them back to design tolerances. eg all pistons weigh the same, crankshaft weights ditto. Ergo when finished you end up with a motor that has the correct tolerances and is technically in balance. Takes more than a couple of days and is very expensive and usually only required by race teams. BTW most of the work is done in an engineering workshop.
My boss back then was a qualified automotive engineer who owned the bike dealership and engineering business, otherwise not a lot could have been done in house.

And thems the facts jack A truly blue printed motor will gain little extra performance, it's just that it is the perfect base to start the real tuning.

I think the nice thing is, as pointed out, at least he knows it was put back together in spec. These common oil issues, are most commonly due to Ducati's poor quality control. So if nothing else he knows the engine is "together". At the end of the day and engine is an engine, anyone that has built engines knows leaks are not something that "just happens".
The whole "Blue print" thing reminds me of my doctor telling me I have and "Upper respiratory infection" aka common cold, "hypertension" high BP or "ADHD" aka your a bad teacher so you blame me . Fancy words for common things lol

it would consist of making sure the decks are perfectly square that the quench was set the same on both cylinders, that both combustion cc the same, deck height was the same on both holes, ring gaps perfect, all bearing clearance is perfect, and concentric, crank end play and centerline is perfect, with no side loads on rods, cams degreed exactly ect. ect. Stuff that just doesn't happen on an assembly line engine. Steve

In engineering terms blueprinting is far more involved than just re-assembling the same parts carefully. Component selection, e.g. pistons, from a large batch to match the two closest together in weight and dimensions is the essence of blueprinting, even before any assembly takes place. Further machining/testing of components for things like material integrity, balance, gas flow, etc are all part of the true blueprinting process. Is this what happened in this case?

Clearly proper blueprinting has a significant time and cost implication, and is usually only justified for competition purposes.

MrKO said:

I think the nice thing is, as pointed out, at least he knows it was put back together in spec. These common oil issues, are most commonly due to Ducati's poor quality control. So if nothing else he knows the engine is "together". At the end of the day and engine is an engine, anyone that has built engines knows leaks are not something that "just happens".
The whole "Blue print" thing reminds me of my doctor telling me I have and "Upper respiratory infection" aka common cold, "hypertension" high BP or "ADHD" aka your a bad teacher so you blame me . Fancy words for common things lol

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Not really just fancy words. A substantial job with a substantial price tag. No way a regular dealer would under take a job like this just for the hell of it. Reluctant to piss on Jim's parade here but I'm not sure if the dealer is either blowing smoke or doesn't actually know what "blue printing" is. Either way not good

Sounds like a lot of people here know just enough to get themselves in trouble. I love this forum.