horsepower gains from balancing

[p5150]

if you take an engine that has say 232hp at the crank, and for some odd reason, say you take the engine out and apart, balance and blueprint everything (they are different) and put it all back together without changing any internals, you will still have 232hp at the crank. yes it will be a much smoother rev.
in order to gain more hp, you need to raise compression. installing a clutch, or 3 in exaust does not give any hp, it simply lets more of the engine's hp reach the ground.
and blueprinting is when everything is to an exact measurement of what it is supposed to be. if a head bolt is supposed to be tightend at 85ft.lbs. +/- 1ft.lb from the factory. it might be set at 84, 85, or 86ft.lbs. if it is blueprinted, every head bolt is set at exactly 85ft.lbs. and so on for every other part. at least i think anyway. this is what i have been told.

Uhm close.....

Blueprinting refers to ensuring all of the measurements (rod pin/crank center, pison width, crank, etc etc) is PERFECTLY within specification. These measurements can be off if an engine has been run for awhile, but unless your motor has significant wear (burning oil or knock) this is probably negligible. Keep in mind that Toyota is very precise in the assembly of their engines and that your "blueprinting" done by an inadequate machine shop may actually leave you in a worse position. Done by a competent machine shop, it can definately increase your reliability - how much depends on the condition of your block to start with.

A 3" exhaust WILL give you more power. Raising compression is accomplished by turning up the boost.

 

[pimptrizkit]

raising boost doesn't increase the compresion ratio, but increases the combustion pressure. 8.4:1 refer's to the distance the piston travles in the bore. or so say the space difference from start to finish.

 

[1988SupraDreams]

I dono, my friend claims it does.. :dunno:

 

[OneJoeZee]

raising boost doesn't increase the compresion ratio, but increases the combustion pressure. 8.4:1 refer's to the distance the piston travles in the bore. or so say the space difference from start to finish.

He didn't say turning up the boost increases the compression ratio. He said it increases the compression

 

[p5150]

raising boost doesn't increase the compresion ratio, but increases the combustion pressure. 8.4:1 refer's to the distance the piston travles in the bore. or so say the space difference from start to finish.

You are right - it doesnt increase the compression ratio mechanically - sorry if I wasnt clear on that

 

[jdub]

It's called "dynamic compression" and boost does increase that (among other things)

 

[gixxer750]

and the compression ratio(mechanically you say) is called static compression.

If you have an 8.0:1 static compression, @ 14.7 psi of boost, you have 16.0:1 dynamic comp ratio....I think.