Red2000SS

I have seen references to "blueprinted" engines, and even "blueprinted" engine parts such as oil pumps, but what exactly does this mean?

To me a blueprint is an engineering drawing of a part. What makes a "blueprinted" part any better than a regular part??? Two parts seem pretty much the same, one has a pretty drawing, and the other doesn't <img src="images/icons/confused.gif" border="0"> ??? What am I missing...LOL

Sorry if this is a dumb question <img src="gr_sad.gif" border="0"> , but I've never seen it discussed.

Freak

it means measureing everything to be sure that it matches what its supposed to be, and if it doesnt fix it.

example: If you had a head, and the chambers are supposed to be 64 cc but they come out to 63,64,62,64, you would enlarge the two that are smaller.

MTWallet

I think it also means to rebuild something to its exact specifications:
For example, if you blueprint an engine you take it apart and rebuild to the exact tolerances and specs. This may not be possible when mass producing engines...the process is done faster so parts may not be alligned perfectly, etc...and this affects the engine's performance.

so an engine freak may want to have the engine rebuilt so it can perform the way it was meant to. <img src="graemlins/burnout.gif" border="0" alt="[Burnout]" />

Freak

that is correct, tolerances are included in the statement I made. I used heads as an example because tat popped into my mind first