I think with my set up having high compression even with less boost you will have good performance If I can obtain 10 psi of boost, that is a PR of 1.68. "If you have a 700hp big-block with an 11.0:1 compression ratio and you want to throw a ProCharger on it to try to push it over 1,000 hp, you are going to … It can be thought of as a dyno output/chart for the compressor stage independent of the engine it’s run on” says Seth Temple Applications Engineer for BorgWarner. Supercharger Performance Calculator This simulator may be used to evaluate Eaton Supercharger performance based on the specifications you enter below. Like stated before some of the top modular cars are running compression ratios in the ~11.xx range on twin turbo race car. If your engine is smaller than this, your boost will be higher. Close Engine Engine Type: Displacement: NA Compression Ratio: ... NA Compression Ratio: SC Compression Ratio: Standard Metric. An engine’s compression ratio is a big deal. Everyone remembers the anemic low-compression 1970s and nobody wants to repeat them. My Engine N/A dyno sheet indicates I achieved 526HP @ 4900rpm, so 884 Hp, minus the hp to drive my blower, and other ineffieciency's. Free Horsepower Calculator Compression Ratio Calculator Race Math Formulas and Racing Math Resources. Speed (RPM) I have a crate LSX 454 that GM says the compression is 11:1. Once the OEMs gained greater control over … “A compressor map shows mass flow, pressure ratio, speed, and efficiency. HP From CR Change Calculator: HP You Have Now: Old Compression Ratio:1: New Compression Ratio:1: Input Old/Original Compression Ratio and New Compression Ratio… The above chart shows the effective compression ratio of your engine, which combines the static compression ratio with the amount of supercharger boost. It is interesting that this engine vs. the engine in Test #21 (which is a high compression) is a normally aspirated engine with a big cam, and both have very flat torque curves—very nice. You never see a low-compression racing engine unless it is arbitrarily limited by some class restriction. If your engine is larger, your boost will be lower. I have a question on compression ratio. Note that for most street applications with 92 octane pump gas, you should keep your effective compression ratio below about 12.0:1. Higher compression ratios yield more power in racing engines and street engines. See our additional drive ratio charts at the end of this section. I am considering a procharger ( or turbocharger) upgrade, but I am told that the compression ratio is too high for boost. Let us not forget also back to one of my points that a high C/R isn't a garauntee, A 4.6 3v with the FRPP blower is rated at 550hp … Compression, Intercoolers, And Water InjectionEveryone has an opinion when it comes to combining compression ratio with supercharging. We are pleased to share these helpful tools with our valued customers and guests. with drive ratios that will typically produce 11to13 pounds of boost on a 350 cid engine and 5 to 7 pounds of boost on a 454 cid engine. Some contend that low compression … Click on either chart … High Performance starts with math, precise measurements and calculations. Calculate New HP From Change In Compression Ratios: Wallace Racing BACK to Calculators 2/11/2021 11:26:46 PM. With pump premium gas compression ratio and a normally aspirated cam, it should scare 600 HP.
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