I think it is commonly used to indicate that the components are within the tolerance - BUT - they are selected or machined to the side of the tolerance that results in some benefit - like selecting pistons on the lighter side of the tolerance higher rev limit , or boring the block to the higher side of the tolerance more cubic inches.
Engineers design a motor with a certain level of precision. Production has to assemble XX motors in XX time. Most of the time it results in a good motor but not great. A hand built motor with perfectly machined components and extreme assembly care will result in a smoother running motor.
Back in the day, automotive engines were mass-produced by hand and assembled mostly by hand…Some of them could be pretty ratty. It did cost some money but it allowed you to win races with a legal engine. When GM firts started exporting finished cars to a prospering Japan, they were so roughly assembled that they had dealer body shops take the cars apart and reassemble them! In this case not the engine was involved but rather the rest of the car.
I sort of understand blueprinting from the point of view of racing engines. But other than wanting to build an engine intended for racing use, is there any benefit to blue print an engine you are rebuilding for your every-day driver?
Do people blue print their Toyota corolla and Honda civic engines? I bet you could notice the difference, back to back. Caddyman is right in that when engines were mainly assembled by hand…there was a wide range of variances between engines.
Today those variances are much much smaller. Most engines if not all would be considered blue-printed engines as by the definition of 30 years ago. Back in the day, it meant trying to hit the specified value on the design prints, not just being inside the tolerance limits.
Funny story at least to me - years ago I had a friend that decided to pay someone to blueprint his We thought he was wasting his money. A friend who was an engine guy offered up a challenge. He would take another beater and just rebuild it, paying no special attention to detail. You are quite welcome to supply your own new parts should you have a preference for a particular brand name.
However, our parts prices are very competitive and our high standards ensure that only quality parts are fitted to any job. We have liaisons with many Australian and international companies allowing us to have access to world-wide sourcing of parts.
Any reputable product will come with a warranty as proof of its quality. Galloway Engines are no exception. We offer a full warranty on all of our work. Contact us for more information on the terms and conditions of our warranty.
Galloway Engines supply a quality engine which is completely reconditioned to comply with original manufacturers specifications and are in accordance with Australian Standards AS for petrol engines and AS for diesel engines. Our up-to-date equipment produces quality precision work and our team of specialised technicians are dedicated to detail. This ensures you are getting the best job possible. Whether it be a Caterpillar engine from a giant earthmoving machine or a small three cylinder Suzuki engine, we have the equipment to be able to meet your needs.
Contact us to see how we can meet your requirements. We can offer options which can enhance the performance and reliability of an LPG engine. Galloway Engine Reconditioning also stock a range of exchange heads which are modified to run on LPG.
Engine Blueprinting. Frequently Asked Questions How do I know if my engine needs reconditioning? Do you remove and refit engines? Can I supply my own parts? Do you offer a warranty? Why should I use Galloway Engines? Can you recondition any engine? Do you offer engines which suit LPG? Back in the days prior to the computer age, an engineer would draw an engine design on blue draft paper - hence the name blueprint. The blueprint is the original design specifications of an engine.
Deck squaring to the main and cam centreline The deck is machined perfectly parallel to the main bore centreline, while correcting any deviations in deck angles. Boring cylinders to main and cam centreline The CNC boring fixture machines each cylinder bore, not only to the desired diameter, but corrects any alignment issues as well, in terms of bore centreline location and bore angle. Line boring The patented Rottler right angle drive on the cutting head delivers a more accurate, straighter cut than boring using the traditional boring bar method.
Technically each set could have been used to build a motor that would have run for k miles, and could have been balanced to work just like any other motor with some machining on the crank. The amount of balancing a blueprinted motor needs is so low its off the scale. All bearing and races are measured to be with-in thousands of each-other. Hopefully you see there is a lot more to a blueprinted motor than just having some things measured and machined to fit. Blueprinting is a long process requiring LOTS of parts to find them within spec of each other, and LOTS of machinist time in measuring and scoping everything.
The actual motor is measured and put into tolerance instead of machining components to balance at the crank. So does all this really mater? For a street motor I would argue no. In reality blueprinting a motor is all about getting every last inch of performance out of it, no matter what the cost. While a blueprinted motor will rev faster, have less rotational power losses, and harmonically be stronger, its not worth the money for a street application.
Are there such a thing as blueprinted motors out there….. But are the thousands of blueprinted motors you see advertised on ebay really blueprinted? Want to know more about your particular Make and Model vehicle? All of these vehicles are covered in the tech, maintenance and repair articles found above. Enginebasics is the wiki or wikipedia of car part, repair, how to and tuning information. Let us be the class for your automotive learning. Below are just a few of the articles found here on enginebasics.
Dynamic Compression Air to Air Vs. Special thanks to:. Info from every other site I looked at, only said how to do it using costly special tools. Thank you for showing the REAL easy way, and saving me some money. So much mis-information on forums, good to read some solid info. For the latest Automotive news and stories visit the websites below.
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