Highest compression on 91 pump gas

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Web5 de jun. de 2004 · All of my DD2k testing so far has been based on a 9.5:1 compression ratio. 9.5:1 compression is probably safe for 91 octane gas. But could I go up to 10:1 …

9:1 compression with boost? TorqueCars Car Forums

Web26 de set. de 2011 · Keep the dynamic compression ratio under 9.5 and it will run on pump gas. Run a dynamic compression calculator. You will need the valve timing events and motor specs. That will dictate what works or not. 1999 GT 630rwhp on pump, TFS Heads, MMR 4.75L, Highly Modified Kenne Bell 2.1 @ 20lbs, Custom Intercooler, JLT High … Web5 de set. de 2008 · Building an engine for more performance often means raising the static compression ratio close to. 10:1, but keeping the effective compression ratio not much over 7:1. Anything lower gives up power. Anything much higher will not run at low speed with WOT on pump gas without detonating and destroying itself. great tool deals

Discussing Compression Ratio And Pump Gas …

Web14 de mar. de 2011 · Max safe comp ratio with 91 octane would about 10 to 1 but with a BBC it might be a bit lower around 9.5 to 1 as the iron heads on a big block are not all … WebThis is a discussion on High Compression within the Internal ... These engines are fairly easy to run on pump gas with 38 degrees of ignition lead if you have the fueling right. I built a vintage 427 L88 with ... 10.2:1 compression with a muther thumper camshaft and it runs effortlessly on 91 octane without a hint of complaining and 36 ... Web23 de dez. de 2007 · I'm assuming you mean (regular) unleaded. That being the case I would say about 8.5:1 depending on timing. I did a bunch of research a few years back and the conclusion was that a good ballpark is to take the octane rating and directly correlate it to compression ratio. Example. 87 octane = 8.7:1, 89 octane = 8.9.1, 92 octane = 9.2:1, etc. florida beach commercials 2005

How much compression can I safely use with 91 octane …

Most compression for Pump gas? Hot Rod Forum

Web3 de jun. de 2006 · Fresno , Ca. I just got my 468 running. The compression is about 10.5 to 1. The cam is 231 239 550 575. Trans is a TH400 with an ATI converter 2,500-3,500 flash. My cranking compression is 175 pounds on the third stroke. I'm currently running 91 octane with 36 degrees of total timing. The car shuts down fine but it is a pile of crap to … Web18 de fev. de 2009 · What is the upper limit for a compression ratio to use with ... but since it's 30% cheaper at the pump, it works out about the same. Pir8Darryl, Feb 18, 2009. SHARE POST #7. Joined ... 6 psi, 12 degree initial adv. 36 degree total. With 91 pump gas it runs fine but I won't put 87 in it. mctim64, Feb 18, 2009. SHARE POST #8. florida beach close to georgiaWeb9 de dez. de 2011 · JeffMcKC. Its will depend on how the camber is set up, timing curve, and cam shaft, and which pump you get your 93 octain out of each staion will have a … florida beach close to atlanta ga

"Web10 de abr. de 2024 · This is not a bad compression ratio for pump gas. Let’s say that you’d like to push that closer to 10:1. Our piston is pretty close to the deck at 0.005 inch so we can’t really put a steel shim head gasket on this engine because this will put our piston-to-head clearance too tight at around 0.020 inch. " - Highest compression on 91 pump gas

Highest compression on 91 pump gas

Compression with 87 octane Hot Rod Forum

Web24 de jun. de 2011 · 17 Posts. Discussion Starter · #6 · Apr 15, 2011. I'm talking about a completely stock SCJ 429 in a torino with an 11.3-1 compression ratio running on 91 … Web7 de abr. de 2010 · What would yall say a max "safe" compression ratio is for this combo at sea level with 91 octane? Reference info LS3 aluminum block (4.070" bore), 3.622" …

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Web5 de abr. de 2010 · Highest Compression piston on pump gas (91) Jump to Latest Follow 1 - 4 of 4 Posts. B. brent701 · Registered. Joined Feb ... Discussion Starter · #1 · Apr 5, 2010. Only show this user. I am going to redo the engine. and wanted to up the piston Compression but still run Pump gas. Web6 de abr. de 2013 · I agree that 200-215 psi cranking compression is too high for California's 91 octane pump gas. And that is obviously confirmed by what you are experiencing. …

Web21 de mai. de 2003 · Discussion Starter · #1 · May 18, 2003. I would like some feedback on how high of compression you can go and still run pump gas. I was running 10.2 on my … Web12 de dez. de 2008 · 1,232 Posts. #8 · Dec 8, 2008. A tight quench will also keep things happy with higher compression and pump 91-93. Can actually run higher compression with proper quench than you can with it out in left …

Web21 de mai. de 2003 · Joined Jan 13, 2002. 5,094 Posts. #6 · May 20, 2003. yeah you would have to be alot smarter than me to make your car run any higher compression. the guys in the phr engine masters challange had alot of engines with 13:1 and higher that all ran on pump gas. you're on the right track thinking about static and dynamic compression tho … Web19 de mar. de 2024 · Where it was once taboo to run 11:1 or even 10:1 on the street with pump gas, we're finding that a well-chosen combo (heads, cam, intake, etc.) can push the boundaries of acceptable compression ...

Web21 de dez. de 2011 · Static compression ratio of 11:8:1. Effective stroke is 2.75 inches. Your dynamic compression ratio is 8.31:1 . Your dynamic cranking pressure is 167.00 PSI. Your dynamic boost compression ratio, reflecting static c.r., cam timing, altitude, and boost of PSI is 8.31 :1. V/P (Volume to Pressure Index) is 141.

Web1 de nov. de 2011 · What is the highest amount of boost that I can (safely; conservative numbers) run (from a turbocharger) on 9:1 ... that I can run on a the engine with 9:1 compression AND 91 OCTANE PUMP GAS! Thank you for letting me know I skipped that. SLEEPER Pro Tuner. Points 592. 31 October 2011 #5 91 octane is going to seriously … florida beach dawesville waWeb29 de dez. de 2010 · I'm lookin' at getting a 383 stroker for my pickup. What is the max compression ratio to still be able to run on 91 octane pump gas? What would the best cam be for low-end torque? Should I use vortec heads? P.S. What type of fuel economy would I get with overdrive? florida beach clothing storesWebOn a diet of 91-octane pump gas, the SR20DET engine consistently produces over 320 horsepower to the wheels. With the entrée switched out to some of VP Racing’s top racing gas blends, the same engine made over 90 more peak horsepower at the wheels. Understanding the science of race fuels will help you to pick the best blend for your vehicle. florida beach commercials 2006Web16 de mai. de 2006 · As you can see this increase in compression recouped almost all the low-speed torque that was lost. On top of this the big cam/high compression combo … great tool gifts for menWeb21 de dez. de 2011 · Static compression ratio of 11:8:1. Effective stroke is 2.75 inches. Your dynamic compression ratio is 8.31:1 . Your dynamic cranking pressure is 167.00 … florida beach driving permitWeb9 de jul. de 2001 · 10,475 Posts. #3 · Jul 5, 2001. I don't think it is possible to say a certain compression ratio is the absolute limit for an iron headed SBC. 9.5 to 1 is the rule of thumb. Sure you can get away with higher but then you have to be careful with quench, cam, piston type and things like that if you want to stay away from detonation. greattool mtb-6spWeb1 de set. de 2002 · The key here is to give you one more tuning device you can use to dial in your engine to perform better. If your engine checks out with around 170 to 185 psi of cranking pressure, then you're ... florida beach condo rentals oceanfront