bobtail
Sr. Member
what exactly is a blue printed engine?
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blueprint engine
- Thread starter bobtail
- Start date
blubuckaroo
Grease Monkey
For one thing, it's a brand name. The real term means that the motor has been line bored, balanced, and port matched.
Blue printing is a lot more than line bored, balanced and port matching those things barely scratch the surface. Its actually taking each part and matching it as closely as possible for the best fit and or weight. say you have 1 piston that weighs say 200 grams and another weighs 205 grams then you have a rod that weighs 650 grams and another that weighs 645 grams well you would match the 205 gram piston to the 645 gram rod so both the rods and piston assemblies weigh the same.
Basically you go over every part of the engine wether its weight, diameter or actual size and make them all match as closely as possible.
Take cylinder heads you measure each chamber and make sure they are all the same CC. if not you remove material to make them match. Its all a lot of work and attention to detail but can ensure even power and a smoother running engine,
Basically you go over every part of the engine wether its weight, diameter or actual size and make them all match as closely as possible.
Take cylinder heads you measure each chamber and make sure they are all the same CC. if not you remove material to make them match. Its all a lot of work and attention to detail but can ensure even power and a smoother running engine,
TwoDalesDad
Bronco Guru
- Joined
- Jul 19, 2011
- Messages
- 1,515
Thats a very through explanation...
lowbush
Bronco Guru
Yep a very good one, I would add that everything on the engine is torqued to spec as well. Even the accessorizes mounting bolts get torqued to factory spec.
Each part that contacts another is coated with a thin blue substance, rotated, disassembled, and checked for perfect clearance, at least that's the way it used to be done.
- Joined
- Nov 3, 2003
- Messages
- 47,747
What they said.
The term itself though, actually comes from the act of matching the (often imprecise) production engine to the original specifications on the engineering drawings, or "blueprints" as originally designed.
A production engine might have imperfections in the castings, forgings, machined parts and whatever. With all the things they mentioned, like weight for balance, squared to the crankshaft centerline for everything, and all that.
It's just the concept of matching the engine to the original blueprints.
Paul
The term itself though, actually comes from the act of matching the (often imprecise) production engine to the original specifications on the engineering drawings, or "blueprints" as originally designed.
A production engine might have imperfections in the castings, forgings, machined parts and whatever. With all the things they mentioned, like weight for balance, squared to the crankshaft centerline for everything, and all that.
It's just the concept of matching the engine to the original blueprints.
Paul
