Not to thread jack but what are the main things to build for if you want a high sprung motor. strong Rods, valve springs, and high presure oil pump?
highly strung NA?
obviously capacity is what you want.... be that cubes, or swept capacity. Being limited to a relatively small engine, swept capacity is what you have to work with....that means spinning the motor quickly.
First and foremost, you need to make sure the engine can PHYSICALLY handle the stresses of high RPM operation. Generally that means a rod to stroke ratio of 1.6 or higher (although 1.5 would be better than nothing) to keep piston acceleration in check, and short stroke (which we don't have) to keep mean piston speed under control.
Mean piston speed has another side effect - if it is too high, you can actually have a situation where the piston out-runs the flame front during combustion. Fuel burns at a specific speed - go faster than that by 30 degrees after top dead center, and you get no power.
Once the engine can physically handle the stress (again, i'll stress conrods.... 3 engine builders have told me that a rod that will support 600hp at 7000rpm could potentially fly apart at 200hp and 9200rpm because of the forces involved), and you have fuel that can keep up with the piston speed (or a reduced stroke that negates the need for better fuel), you need to insure that everything else can support the speed.....that means upgrading the oil system, improving the fuel system, machining things to far tighter tolerences, and balancing the rotating assembly to the extreme..... oh and of course, high compression + high engine speed will require a fairly potent ignition system....
Then you've got the intake and exhaust to deal with....you have to have enough capacity to flow in order for the engine to breathe at high speed.
I've posted all of this stuff in one way or another elsewhere on the board, and there are some pretty big conversations about the technical issues in the installshield threads...
sell that intercooler yet? pm me
