Just some info I learned today from a local guy, that I never really thought about before, but is common since if you think about.
Increasing horsepower by lets say via uncorking exhaust does not add stress to your engine internals
For example: You have a 380 rwhp blown gt with stock headers. You than add aftermarket headers lets say long tubes to car and get an estimated 40 more rwhp to increase hp to 420 rwhp.
Now you have 40 more horsepower worth of heat and pressure inside the cylinders you would think. But no you haven't.
What tears apart pistons, ring lands, rods, cranks and blocks isnt power. its pressure and heat in the form of pumping losses. Everyone knows that your pistons are pumps working against the crank to produce power at the flywheel. What most people forget is that the pistons are also working to evacuate the cylinders. Exhaust pressure is a very real frictional load that benefits the longevity of the entire motor whenever its lessened.
Even though you gain power with headers, youre gaining that power by relieving resistance (harmful resistance, at that) against the pistons.
Something else to point out is 99/01 cobra guys push there limits farther than us. 4valve guys in boost applications go to 430-480rwhp give or take a few on the stock shortblock, but 2valve guys wouldn't dare to try to push a stock 2valve shortblock to numbers close to the 500rwhp range or so. But we have basically the same rods and pistons as them. But people say our weak link is the rods and pistons. When that is true, but there is alot more involved than that.
I understand that some may agree with this and some of those that are close minded and will probaly try to flame me for this post. Just thought I would share some info with yall.
Josh
Increasing horsepower by lets say via uncorking exhaust does not add stress to your engine internals
For example: You have a 380 rwhp blown gt with stock headers. You than add aftermarket headers lets say long tubes to car and get an estimated 40 more rwhp to increase hp to 420 rwhp.
Now you have 40 more horsepower worth of heat and pressure inside the cylinders you would think. But no you haven't.
What tears apart pistons, ring lands, rods, cranks and blocks isnt power. its pressure and heat in the form of pumping losses. Everyone knows that your pistons are pumps working against the crank to produce power at the flywheel. What most people forget is that the pistons are also working to evacuate the cylinders. Exhaust pressure is a very real frictional load that benefits the longevity of the entire motor whenever its lessened.
Even though you gain power with headers, youre gaining that power by relieving resistance (harmful resistance, at that) against the pistons.
Something else to point out is 99/01 cobra guys push there limits farther than us. 4valve guys in boost applications go to 430-480rwhp give or take a few on the stock shortblock, but 2valve guys wouldn't dare to try to push a stock 2valve shortblock to numbers close to the 500rwhp range or so. But we have basically the same rods and pistons as them. But people say our weak link is the rods and pistons. When that is true, but there is alot more involved than that.
I understand that some may agree with this and some of those that are close minded and will probaly try to flame me for this post. Just thought I would share some info with yall.
Josh