Dynamic compression ratio and pump gas
WebDec 29, 2011 · Most gas stations offer three grades of octane, with regular rated typically at 87, mid-grade at 89 and premium at 92 or 93 [source: Federal Trade Commission ]. It's easy to find what octane rating a gas … WebNov 11, 2008 · it all depends on the build. compression relate to not just pistons, but stroke and cc of heads. if you'r motor is 11 to 1 total with stroke, cc in head, and pistons you will …
Dynamic compression ratio and pump gas
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WebMar 9, 2007 · Compression ratio 10.8:1 Is this too much compression for pump gas? I can get this same setup with dish pistons but it drops the compression down around 9:1. I'm afraid that would be too low for the cam I want to run. Thanks N NWayne Registered Joined May 8, 2006 133 Posts Discussion Starter · #2 · Mar 7, 2007 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.
WebMay 17, 2006 · Compression Comprehension You can run 11:1 or even 12:1 compression on your pump-gas street motor, but you'll need this simple advie to make it happen. WebAug 11, 2007 · 120 engle cam, street, non daily driver, pump gas (91) right now the compression ration is 10.6 to 1 94 bore 84 stroke 50cc heads .060 deck height with the biggest spacers. ... the FK8 allows for a higher compression ratio because of dynamic compression with that cam (or static, don't remember which is which).
WebApr 29, 2010 · I did a dynamic compression test of my engine, and while it has a relatively high static cr at 9.7 the dynamic cr is 7.8 {and the dynamic CR is without boost at 14psi … WebApr 4, 2005 · I'm reluctant to draw a line to the limits of compression vs octane. A long time ago 6:1 was considered High Compression. I was talking the other day to Scott at King motorsports and he claims to have street Honda's running 12:1 with 93 octane. These have VTEC so the DCR is variable as well.
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 …
WebOct 1, 2014 · There are a lot of 347s running 11:1 static compression with aluminum heads on premium pump gas with no detonation issues. My Cleveland has 10.7:1 static … how many tons does the earth weighWebNov 4, 2003 · The listed compression ratio was 8.5-1. I installed AFR 190cc aluminum heads with 68cc chambers and straight plugs. AFR said my compression would be 9.6-1. However, since the engine came with the dished pistons the compression ratio is more likely around 9.1-1. The cam I installed is Comp Cam 280H Magnum. The distributor is a … how many tons in 10 000 lbsWebJun 21, 2007 · As a general rule, the best available pump gas will work with an 8.0:1 dynamic compression ratio. To get 8.0:1 with the preceding rod, stroke, and cam intake closing event, you would need about a ... how many tons fit in a 30 yard dumpsterWebSep 1, 2002 · So if we have a volume of 45 ci at BDC and 4.5 ci at TDC, then the compression ratio is 10:1 since the volume at BDC is 10 times the volume at TDC. ... you can run 11:1 compression on pump gas if ... how many tons in 16 yardsWebApr 22, 2024 · The standard recommendation for street engines running on pump gas has always been to shoot for a 9.0:1 to perhaps 9.5:1 compression ratio. This is in order for the engine to safely work with … how many tonsils do we haveWebDec 18, 2024 · Trying to figure out whether my 9.0:1 dynamic compression ratio will play nice with 91 octane pump fuel. I originally speced this new 408w build for 94 octane (which I thought was already close) and ended up in a place that doesnt have better than 91 octane at the pump. The cam was of course dialed in for all this. how many tons in 10 yards of gravelWebApr 7, 2010 · Pulled out my cam card while in the shop today. the cam is ground with a 110 intake centerline and 277 advertised duration. Using a calculator program I got intake … how many tons in 18000 pounds