topshot_2k
Banned
Registered: 1st Dec 03
Location: Northampton Drives: Pug GTi-6
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what does this actually involve/do?
my mates into fords and some of the guys he knows have got blueprinted blocks but i aint got a clue what it is????
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bradfincham
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Registered: 20th Sep 02
Location: East Of England Drives: Clio 172
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it means matching the head to the exhaust ports, inlet ports,
basically just removes small manufacturing errors on the inlet and exhaust side of things, so the air and exhaust gases flow much smoother and faster
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broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
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sorry brad...
it means the complete engine has been built to the best tollerences available from the manufacturers specification....i.e. the biggest valves that the tollerences allow, the biggest pistons that they allow...
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bradfincham
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Registered: 20th Sep 02
Location: East Of England Drives: Clio 172
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i was always told it means matching the inlet and exhaust ports, manifold, meaning a smoother inlet rather then the rough as there machined from the factory
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bradfincham
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Registered: 20th Sep 02
Location: East Of England Drives: Clio 172
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ENGINE BLUEPRINTING
Engine blueprinting has become standard procedure in many performance engine shops. Blueprinting is an absolute necessity to obtain maximum power and to insure the longest possible engine life and reliability.
Blueprinting an engine means hand building an engine with perfectly fit components using maximum recommended clearances, and minimum recommended volumes. These specifications should be determined using the engine manufacturer's tolerances for the engine being built.
All parts must be one hundred percent clean. The block should be boiled out making certain water jackets are perfectly clean. All bolt holes should be re-tapped, cleaned and oiled, as well as their mating bolts. Any surfaces being refinished should have all holes chamfered, and any casting burrs or irregularities should be ground away.
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
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quote:
Originally posted by bradfincham
i was always told it means matching the inlet and exhaust ports, manifold, meaning a smoother inlet rather then the rough as there machined from the factory
That's porting mate...
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broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
User status: Offline
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yes pretty much what i was getting at building the engine to the best of the tolerances....... doing the head like you said is just flowing the head and matching the ports
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bradfincham
Member
Registered: 20th Sep 02
Location: East Of England Drives: Clio 172
User status: Offline
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were both right then 
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broster
Premium Member
Registered: 6th Dec 02
Location: Drives: E39
User status: Offline
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no.
"Blueprinting an engine means hand building an engine with perfectly fit components using maximum recommended clearances, and minimum recommended volumes. These specifications should be determined using the engine manufacturer's tolerances for the engine being built. "
where does it say about machining the head etc!? its dont using perfectly matched parts.
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