getting 1200 out one today would be a piece of cake. The crank was lowered into the one piece crankcase while it stood vertical, and had cross shaped main webs that bolted to the crankcase with 2 bolts on each cross, for a total of eight bolts per main. There were no main caps, and the lower end didn't split like a VW or motorcycle case. The lower end was almost as bullit proof. They have NO HEAD GASKET NO HEAD BOLTS, to blow. And that was only done because Ford cried so damn much, and swung a bigger hammer than some little ass enigine shop in Los Angeles. To calculate for RWD drivetrain loss divide 600 / (1 15) or 600 / (.85) 705 If you want 600 wheel horsepower you need a turbo that can support 705 crank horsepower. I would have won another 12-15 races if they hadn't lower the boost limit to a max 26 psi from the 45 psi these things were designed to run at. From 1950 thru 1960, it won the pole 10 times out of those 11 years. More than one Indy race was run with this being the ONLY engine in the field. It won Indy 27 times, and took all three positions on the podium for an entire decade. The original design goes all the way back to the 30s 009.Įvery 4 valve over head cam japanese import owes it heritage to this motor. The biggest reason it makes the power it does is an incredably effiecent combustion chamber, drop dead perfect ports, with perfect inclined valve angles, 4 valve twin over head cam. RE: calculating plenum size on 2.It was on meth. To calculate for RWD drivetrain loss divide 600 / (1 15) or 600 / (.85) 705 If you want 600 wheel horsepower you need a turbo that can support 705 crank horsepower. Look up "Helmholtz" in google for some formulas. ![]() If you blow into a beer bottle you can get a low frequency droning sound which has a wavelength far longer than the size of the bottle. This is not the same as tuned runner length which relies on the speed of sound. Boost and Airflow Calculator Displacement in Cubic Inches, Engine displacement in cubic inches PSI Boost Required Pounds Air/ Minute for Desired Hp CFM for. The volume of air in the runner, combined with the springiness of the air in the plenum causes the air in the runner to bounce like a spring. Use this calculator to determine the turbocharger requirements that best fits your setup. Its a bit like the tuned port in your loudspeaker box. The runner VOLUME, that is length x area, can combine with the air volume in the plenum to create Helmholtz resonance at a particular (usually low) frequency. Plenum volume is a third variable that may (sometimes) be used to create an additional low speed tuning hump in the torque curve. This can introduce tuning peaks and hollows into the torque curve, but the effect is not as strong as diameter. This will be the strongest tuning variable and will effect the torque peak. The first is runner cross sectional flow area. When tuning the induction on an n/a engine there are three tuning variables. Spread the love Horsepower Loss at Altitude Calculator Horsepower Loss at Altitude Calculator Horsepower at Sea Level: Altitude (feet above sea level). In practice you will always be limited by the available space and layout. However, if you are planning on individual throttle bodies in each runner, it is going to have crisper throttle response with even a humongous plenum. A smaller plenum might be better in that regard. If you only have a single throttle body at the plenum entry, a large plenum is not going to help with throttle response or lag. Displacement (Liters) (122.04 CID) Ambient Air Temp (deg F) Altitude (ft above sea level) (14.502 psi barometric pressure) Fuel Type. A symmetrical plenum is going to be better than an end fed plenum as far as air distribution goes, all other factors remaining equal. If it does it can starve those cylinders of air, and they will run rich, while others further from the plenum entry will have excess air and run lean. The isentropic enthalpy is calculated at P2 via the isentropic path from thermodynamic tables. The starting enthalpy if a function of P1 and T1. So, if we take our psi figure and multiply it by 2.31, we’ll get an accurate hp value. This calculator is based on the fact that 1hp 550 ft·lbf/s. Just enter yourpsi and click the calculate button. ![]() This ratio is the ratio of actual enthalpy change for the expansion to the isentropic enthalpy change, which is equal to actual work over isentropic work. If you’re looking for a quick way to convert turbo psi to hp, look no further than this handy calculator. There are many factors to consider, there is not really any perfectly "correct" size.įirst each runner must have enough volume to draw from so each cylinder is not going to rob the next, so bigger is better in that regard.Īlso the plenum entry must not flow at high velocity directly across the face of some particular runners. For expanders an isentropic efficiency is used.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |