Blueprinting

[Yawn]

Hey all,

My engine is in the process of being rebuilt, with forged pistons and rods, 33gtr crank and the like.

I am in the deciding stage of whether to harden up and pay for blueprinting or to scrooge on it.

I know many of you will say since the engine is apart, I might as well, as the saying goes do it once, do it right.

But the money that I wouldve spent on that could be put to buying a new alloy radiator with change left over to pay some much overdue bills.

I know what blueprinting is, but I would like to hear your opinions on whether it is worth doing in my application (street 450-500rwhp, with perhaps monthly circuit stints). Will it make a noticeable difference?

Cheers

[sh@un]

blue-printing is rebuilding an engine to manufacturers factory specifications

why would you want to do that for an engine that has to make more power than the factory intended?

[Yawn]

I was under the impression that blueprinting was ensuring all the components are machined to very close specifications to each other, to the most exact tolerances possible?

My understanding is that this increases the longevity of the motor, making the engine run more smoothly and reliably.

Edited October 17, 2007 by Yawn

[gun32gtr]

I was under the impression that blueprinting was ensuring all the components are machined to very close specifications to each other, to the most exact tolerances possible?

My understanding is that this increases the longevity of the motor, making the engine run more smoothly and reliably.

i also thought that was blueprinting as well... i got my vl turbo blueprinted

[The Mafia]

blue-printing is rebuilding an engine to manufacturers factory specifications

why would you want to do that for an engine that has to make more power than the factory intended?

this has to be incorrect... They blueprint V8 supercar engines..

[zebra]

+1

Blue-printing is making sure the crank, rods and pistons are balanced as close as possible my making all the rods and pistons the same weight and machining the crank so all the counter-weights are the same weight etc.

[DivHunter]

http://www.themotorbookstore.com/engine-blueprinting.html

[Marco-R34GTT]

Then if that is blueprinting, what is 'full engine balancing'??

[Jmaac]

same thing, balance and blueprint (to design spec). Allows your engine to rev higher and longer, or as a safety factor for high rpm turbo cars etc.

[WRRR]

These days blueprinting has become the term for rebuilding to exact specs.

In the old days that was machine and assemble to the specs drawn up on blueprints - ie now cad or similar. (you've seen Mythbusters)

Idea being with a "blueprint" and full balance you get all common components machined and balanced to very tight specs. Result being you minimise unwanted variations that may add to dynamic balance issues, vibrations, .... etc. ie you end up with a sweet engine if you get it right.

FWIW I would be doing it while its in bits especially if you are going to push the output.