WebOct 14, 2014 · I've done a few different searches and went through a few posts (there are lots of them depending on search criteria) that discuss dynamic compression ratio and pump gas. Most of them seem to agree that 8.5 is the max DCR to target for regular pump gas compatibility, I think, for 93 octane, but that's generally as much info as I can find. WebToyota Dynamic Force engine has a compression ratio up to 14:1. The 2014 Ferrari 458 Speciale also has a compression ratio of 14:1. When forced induction (e.g. a turbocharger or supercharger) is used, the …
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WebMay 22, 2016 · While static compression ratio has some value, the IVC angle, inlet pressure are actually ... 180psi cranking compression like 91-93 octane 5000lbs 3.73 gear 195* engine temp sbc 331 10.1-1 compression ... It is interesting to note the temperature similarity between engines when the dynamic compression pressures (not pressure … WebJul 20, 2011 · 87 octane compression ratio cut-off point. Jump to Latest Follow 1 - 15 of 15 Posts. Clint Cummins ... Keep in mind the chart is for dynamic c.r. vs. static. X2 with BigDog, 9.5 is safe, maybe 10:1 max with a good tune and aluminum heads. I think VP-110 is running about $12.00 a gallon if you buy bulk. flip or flop nashville downsize to maximize
compression ratio and 91 octane - Don Terrill’s Speed-Talk
WebThe ratio of the cylinder volume at IVC over the volume above the piston at TDC dictates the dynamic compression ratio.The reduced volume that gets compressed represents your dynamic compression ratio and it is always less than the static compression ratio. In most cases it is up to 2 full points lower. Because it is based on fixed values ... WebApr 7, 2010 · 338 Posts. Discussion Starter · #1 · Apr 3, 2010. alright so I'm trying to nail down my quench/compression ratio. Looks like a lot of folks are running 11.4:1 to 11.6:1 compression ratios on LS engines without issue from what I can tell. We travel in this car so I want to be able to safely drive this thing at sea level with 91 octane without ... WebDec 15, 2011 · Use a good gasoline ( Shell or Chevron ) , keep the compression below 11.0 , and the engine temp as low as possible . I have 10.7 static 7.9 dynamic compression ratios, Cast iron heads 91 octane, motor likes 39 degrees total on 100 octane and can only handle 31 degrees on 91. Engine runs at 170 water temp. greatest hits celine dion