Impact of Intake Valve Closing (IVC) on RPM Range

Eliminator motor out of it it's still going to operate in the same 8 000 RPM wrench just 8 000. well we're going to try to make a lot of power in that six to eight range you know that should be its Sweet Spot um you know when you every time you when you close the intake valve over here so it's the intake valve closing so IBC is right here if you close the intake later he'll tune in higher RPM as you close the intake earlier it's lower RPM so we can only close it at a certain first given cubic inch that is trying to to supply and give a poor cross section there's sort of a perfect intake closing for one RPM if you go a thousand RPM pass there it's closed too early if you've got a thousand RPM below it it's closing too late and so what will happen is you'll fill in the chamber you know the port will fill in the cylinder but if you close it too late as the Piston comes up pressure will build it'll start pushing air back into the port if you close it too soon you've got air trying to rush into the chamber but you've slam the door in his face so that's why closing that intake and that's why you know you can try to make the a camshaft work at all RPM but it doesn't really work you know Honda got around it with the VTEC by having a camshaft for low RPM camshaft or higher pm today a lot of camshafts have phasers so they actually chase that intake closing Point by advancing the can at low RPM retiring at high RPM but in a race application for a 3000 RPM window we can do a pretty good job with one intake closing we just have to choose it for the right setup um if you look at the exhaust you can see yeah so the load design difference yeah today's low has a slower opening it has a faster closing has a lot higher velocity in this mid-range a lot higher closing velocity and mid-range has higher lift because of the new valve spring yeah roughly 170 000 more left on the exhaust you can see things haven't changed as much you know maybe your rent's due on Friday but you forgot and you found a smoking deal on a junkyard six liter hindsight's 20 20 and you can't change the past but what if you get a Little Help from your future self maybe you'd ask to borrow a little cash now you can thanks to Dave Dave is the banking app that can help you get up to 500 instantly with extra cash that's more money to fill your tank fix your car or catch up on bills there's no interest and no credit check needed billions of people have already downloaded the Dave app to get the financial relief…