Enigne Blueprinting

[kissel]

What exactely is engine blueprinting? Is there a standard way to do it and what is involved? I am having my engine redone and they mentioned blueprinting.....


any ideas?

kissel

[MadMike]

Blueprinting can mean 1 of two things:
They put your engine together like normal, say they blueprinted it and charge you extra.

or

Blueprinting: Meticulously and exactly assembling an engine to optimum clearances and torque.

So, a "real" blueprinted engine will have a sheet of paper with it indicating the clearances and torque values of every component that's been blueprinted (ring gap, valve clearances, bearing clearance, main cap torque, etc...).

It won't be "close enough".
It'll be the exact value or measurement.

Winston cup engines are blueprinted. If you're a thousandth off on a clearance, the thing blows up. This isn't as critical on a regular street engine, which can simply be assembled with care and to the correct specs.

Another example:
The factory spec on a bolt might be 65 - 70 foot pounds. Anywhere in there is fine.
A blueprinted engine will be set at 68 # and it'll be noted. And every other related bolt will be 68#.

This is why blueprinting something costs extra.

[kissel]

thanks mad for the reply, much appreciated.

kissel!