WebJul 14, 2006 · Cranking compression is kind of like a Dynamic Compression indicator. Small cam and low compression can give the same cranking compression as a large cam and high compression. HOWEVER..... what gets overlooked is that static compression ratio STILL MATTERS. It still affects your PEAK cylinder pressure (engine … WebMay 22, 2016 · I believe max cranking compression (max cylinder pressure in general) has much more to do with how long it takes the engine to rpm. The quicker it can rpm.. the better the tolerance to pump gas at those higher pressures. David Redszus Guru Posts: 9322 Joined: Tue Nov 27, 2007 2:27 pm Location: Chicago
Static Vs Dynamic Compression Ratio Piston Ratio - Engine Basics
WebJan 23, 2009 · In this case the motor with the correct timing will do better. Pulling timing will quickly take away the power that the compression adds. Build the engine for a reasonable static & dynamic compression that allows optimum timing on the fuel you intend to use without detonation. 68 SS 396, 5 speed, 4.10's. WebJan 13, 2024 · Cranking compression 185 psi Peak power 376 at 5,900 rpm Peak torque 389 at 4,500 rpm Average HP 296 Average TQ 362 HP/TQ Gains (Over LM7 cam) 2,500 -8 lb-ft 3,500 0 4,500 0 5,500 +23 lb-ft (24... psycho 2 watch online
Cranking Compression Vs. Octane Requirements - 2StrokeHeads
WebDec 1, 2012 · The cranking compression is excellent. The running compression showed reversion from the camshaft and the variation of intake manifold runner length that is … WebFeb 20, 2005 · So while cranking compression is more directly related to effective CR than to static CR, the latter is still quite useful info when performing a compression … WebAug 1, 2008 · Generally, on the same engine, the bigger the cam, the lower the cranking compression. On pump unleaded premium gas, the engine gets really lazy below 160 psi. Above 180 psi with old-school... hospital owned retail pharmacy