what does it involve?
2006-07-19 06:57:26 · 7 answers · asked by judas 2 in Cars & Transportation ➔ Maintenance & Repairs
The displacement gains from boring an engine are typically minimal. At maximum overbore, a 350 Chevy becomes a 361. That's a 3 percent increase in displacement. A slightly more than mild 350 might put out 350 hp. In this situation, boring the engine might result in a 3% gain in hp or 10.5 hp. That isn't much and there are much better ways of going about it. By boring a block .060, you have just ended it's life. There is no more rebuilding it.
To me, in an application where having 10.5 more hp than the other guy makes no difference, a block should never be bored for any reason other than making the cylinders round, the walls straight, and to bring the cylinder diameter for the proper specs of the smallest piston that will fit in the bore. I just rebuilt my engine and had it bored to .020". If I burn it out, I can bore it .040, then .060. Going .030 means then next time you burn up your motor you have to go .060 and then your block is no good anymore.
2006-07-19 07:13:35 · answer #1 · answered by 69 FstBck 4 · 0⤊ 0⤋
engine displacement is measured by the size of the cylinder, which is the space where the piston rides up and down to compress the gas mix and produce power. by boring the cylinder to a larger diameter, you create more volume and therefore are able to inject more fuel and raise the power of the engine. boring a cylinder also requires replacing the piston with an over-sized one which matches the new diameter of the cylinder.
2006-07-19 07:05:17 · answer #2 · answered by the prof 2 · 0⤊ 0⤋
Machining the cylinders to polish or enlarge them. The point is to increase the cylinder displacement without changing the engine block. It requires precision tools and knowledge of the strength and design of the block. One can easily damage or weaken the block if not done correctly.
2006-07-19 07:03:08 · answer #3 · answered by Richard B 4 · 1⤊ 0⤋
THey take out the pistons & valves from engine block ! then on engine block the piston cylinders & valve holes are drilled wider then you put bigger pistons & bigger valves which increases the Horse Power of the Engine !! (EXAMPLE) You have a 350 cubic inch engine after boring it out you now have a 383 cubic inch engine !! M-O R-E H-O-R-S-E P-O-W-E-R ?????
2006-07-19 07:11:53 · answer #4 · answered by Paul S 3 · 0⤊ 1⤋
the piston fits in a metal tube. If it gets all scratched up and leaks, it is possible to "bore" or enlarge this so that you can use a larger piston and get a tight fit again.
2006-07-19 07:00:42 · answer #5 · answered by NoPoaching 7 · 0⤊ 1⤋
making the cylinders over sized
2006-07-19 07:00:36 · answer #6 · answered by sherri h 1 · 0⤊ 1⤋
Subjecting it to "Barney, the Purple Dinosaur" for an hour or so...
2006-07-19 07:27:00 · answer #7 · answered by J. T. N 4 · 0⤊ 1⤋