90 Posts . I am trying to pick out a cam and I am trying to figure out if I can get away with 9.0:1 compression ratio on pump gas with 10 pounds of boost. Your IP: 80.87.194.199 Going from an 11:1 CR at 85% VE to 13:1 and 127.5% VE is going to increase peak cylinder pressure by around 40-45% before it is even ignited. After adjusting for thermal and mechanical energy transfer, if an efficient centrifugal supercharger is generating 7.5 psi (approx. High compression stroker with supercharger. The A-trim will never satisfy your needs, at least not in the long run and the long run is all we care about. 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.) Sure, just like for N.A. If you start at 10:1 compression then you can't add much more pressure without getting detonation but with 7.5 or 8:1 compression you can fit a lot more mixture into the cylinder and get the power from it. Assuming an engine with a compression ratio of around 9:1 running pump gas,if a supercharger gives your engine 14.7 psi of boost (another atmosphere) that will essentially double the output of your engine, everything else being equal. I'm at the edge and last year after 5 years I melted 4 plugs and had massive blow-by and cylinder 6 has 80psi compression while all the others were at 165. (The compression ratio doesn't change but you've stuffed more A/F into the cylinder which needs to be compressed, effectively raising your compression, as far as octane requirements are concerned.) Old gas bit me. This page hosted by Mar 25, 2017 #1. dblundell34 New Member. Table 1 shows that you obviously can't try to run 10 pounds of boost on a 9.0:1 compression ratio engine. You will find with that much compression that it will be VERY timing / tuning sensitive. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. i was able to pull 427 ft. lbs. Jump to Latest Follow 1 - 13 of 13 Posts. Discussion in '96-04 - 2V Specific' started by dblundell34, Mar 25, 2017. I guess the point was that you can run boost with 10:1 compression and pump gas. i only get detonation when im really pulling hard. motors there are rules of thumb. Table 1 shows that you obviously can't try to run 10 pounds of boost on a 9.0:1 compression ratio engine. If you are building your engine from scratch, it is a good idea to try to build it with a relatively low compression ratio, such as 7.5 or 8.0:1. This gives you an effective compression ratio of 15.1:1, way beyond our 12:1 figure. But that doesn't take cam timing into account. The way around dealing with the high compression is intercooling. Conventional wisdom holds you can’t run an engine on pump gas with a 14:1 compression ratio. I'm currently spaying a 200 shot. Something like: Use 8:1 to 9:1 static compression for low boost non-computer controlled carbureted blower motors. • This gives you an effective compression ratio of 15.1:1, way beyond our 12:1 figure. By my calculations, that's even more cylinder pressure than the standard engine would make with 30° ignition advance, purely from the compression … An intercooler is a must regardless which way you go. IMHO I would go with the 10:1 and save up for the S-trim blower. Diese Datei hat eine digitale Signatur. The following chart shows the effect that various amounts of boost will have on the compression ratio. Compression ratio. no its opposite of that: if the safe pump gas compression ratio is 9.5-1 on 91-93octane with iron heads, then the thermal heat rejection/transfer of aluminum heads will allow a compression ratio of 10.5-1 on the same octane fuel your elevation from sealevel and cam timing also play significant roles in the engine combo specs. SUPERCHARGER liefert perfekte Kompression im Handumdrehen. The benefit of this system is how it lowers vaporization heat temperatures in the combustion chamber by directly injecting fuel. of torque at 3900 rpm and 6 p.s.i. Rolltide1006 Member Established Member. If you are considering adding a supercharger or turbocharger, it is important to consider not only the current compression ratio of the engine but also what it will be when the boost is applied. High Compression And Low Compression Dyno Results - Muscle Mustangs & Fast Fords It began with NathanTSI comment of "I am pretty sure it uses 11:1 compression, so don't hold your breath on acting well with boost." 11 to 1 was always considered a safer place to start. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Compression Ratio Effects When Adding a Supercharger or Turbocharger by Joe Curry . Surely cam timing has just as big an affect on optimal static compression ratio on blower motors. Topic: Questions regarding 10.5:1 compression and superchargers (Read 3964 times) tireburner163. Discussion Starter • #1 • Jul 26, 2014. Higher compression with supercharger or procharger? I know 8.0:1 or 8.5:1 is better for running large amounts of boost but for reliability and garbage gas I would like to keep the boost down to 10psi. Performance & security by Cloudflare, Please complete the security check to access. It is a good idea to actually reduce the compression ratio of an engine prior to adding a blower or turbo unit, either by replacing the pistons with dished ones or by adding combustion chamber volume to the head. 10.1:1 plus a mini blower may to be too much for pump gas. A 10-to-1 compression ratio means that the air- fuel mixture gets squeezed down from the full volume of the cylinder to a volume that is just roughly one tenth of the cylinder’s size. For example, if a supercharged engine is pushing 10 psi (0.69 bar) of boost at sea level (ambient pressure of 14.7 psi (1.01 bar), ambient temperature of 75 °F (24 °C)), the temperature of the air after the supercharger will be 160.5 °F (71.4 °C). Bekannte Dateigrößen unter Windows 10/8/7/XP sind 490480 Bytes (25% aller Vorkommen), 506864 Bytes und 10 weitere Varianten. This effective … Sent from my iPhone using Tapatalk Aug 16, 2018 #29. It's used mainly at drags and occasional cruise in. For pump gas (91-93 octane) applications, a compression ratio of 8.5:1 to 9:1 is recommended for boost levels of 8-10 psi. If you have two blower motors, running say 8 lbs. Questions regarding 10.5:1 compression and superchargers « on: July 22, 2007, 02:06:38 am » I recently came across a killer deal on a Vortech T-trim from a good friend of mine, and now I'm thinking about going with a blower on my car. 6 Banger Offline Posts: 97 Location: Meridian, Mississippi . To my statement as to just because its 11:1 doesn't mean it would make a bad supercharged engine. With higher compression a turbo would be much better. Sie kontrollieren alles mit einem einzigen Regler, der auf der ganzen Skala "Sweet Spot"-Konfigurationen … Den Schlüssel liefert der "Compress"-Regler: Legen Sie einmalig die Eingangslautstärke fest und geben Sie Ihren Sounds dann mit satter, harmonischer Kompression die nötige Präsenz – keine Makeup-Gain-Justierung notwendig. well after calculation my car supposedly has 10:7.1 compression cause i install flattop pistons. The fact that a 10.5:1 compression ratio is not conducive to good operation with a turbo and will be prone to detonation is a fact - regardless of the chamber or head used. Further, the system also features direct gasoline injection in the combustion chamber. Während des Windows Bootvorgangs wird dieser Prozess aktiviert (siehe Registry Schlüssel: MACHINE\Run). To give you an idea of this, an 11.5:1 compression motor may have cranking presures of 165 psi whereas another 10:1 motor may show 190 psi. If we now add a supercharger even with just a small amount of boost (let’s say 7 psi), this is roughly equivalent to raising the static compression ratio to 14:1 at full boost. All other factors being equal, an engine with a higher compression ratio will deliver a higher thermal efficiency. Can I run boost with 10:50 to 1 compression ratio? If the barn door is open the horses are going to get out. Also, cam timing is very critical and in this case, having a radical cam is not desirable. When you play around with this you may see why RB Racing has run "high" compression ratios on certain turbo bikes when we were running at Bonneville which is at an altitude of 4500 feet. Messages: 73. I'm not concerned with running race fuel if it will work? Is 9.0:1 compression ratio too high for 10lbs of boost on pump gas on a fuel injected 383? So how does an engine’s compression ratio affect performance? This was run on normal E85 and we checked to make sure the fuel was actually 85 percent ethanol and according to our test it was very close. Higher octane fuel will allow you to run higher boost levels, approximately 1 psi for every 2 points of octane. I have a set made by wiseco thats works with stock rods. Superchargers do not suffer this problem, because the turbine is eliminated due to the compressor being directly powered by the engine. The effective compression ratio will go up considerably depending on how much boost is applied. Turbocharger applications can be categorized into those that require changes in output power (such as automotive) and those that do not (such as marine, aircraft, commercial automotive, industrial, engine-generators, and locomotives). In a typical 302 the maximum compression ratio that is safe is between 10:1 and 11:1 depending on the cam and air/fuel ratio that you use. Cloudflare Ray ID: 5ff9ee00ce333a56 My worry was that it would be so close a … Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Its like trying to walk on a fence. You can do it but you have to be on your game. MLS gaskets have no place on a supercharged alcohol engine. There are supercharger kits for the LS series small block chevys with around 11:1 compression running 6-7lbs of boost as well. Diese Datei ist keine Windows System Datei. Car runs high 10:80's at 128 MPH. Get your own Free Home Page. Messages: 17 Likes Received: 0. • btu i have a paxton supercharger and this car really pulls hard. Please enable Cookies and reload the page. As I mentioned last month, we tested a small block Chevy with a static 10:1 compression ratio with 9 psi of boost using E85. Das Programm ist nicht sichtbar. I found a motor with 10.5:1 compression that runs 10lbs of boost for a decent deal. Therefore, if one has "hopped-up" his engine, it may be necessary to undo these things before adding boost. The engine ran perfectly and we experienced no detonation problems. If you are building your engine from scratch, it is a good idea to try to build it with a relatively low compression ratio, such as 7.5 or 8.0:1. I know this would obviously blow up on 91 octane, but at a lower setting like 5-6lbs I was thinking I might be able to get away with it. Car made 492 hp and 477 tq with an AOD. It is obvious that if your car is already pushing 9:1 compression, adding just 8 pounds of boost will cause some extreme effective compression ratios that will need to be addressed if the engine is to obtain any degree of reliability, not to mention the need for extreme measures to increase the fuel octane. The HR12DDR realizes an extremely high 12.0:1 compression ratio with its supercharger. Compression is 10.1 using stock LSA heads. 13 to 1 static compression is too high. Adjusting for thermal and mechanical energy transfer, if an efficient centrifugal supercharger is 7.5! Proves you are a human and gives you an effective compression ratio also features direct gasoline injection in long. All other factors being equal, an engine with a 14:1 compression ratio will go up depending... N'T take cam timing has just as big an affect on optimal compression! 8.5:1 to 9:1 is recommended for boost levels of 8-10 psi dblundell34 New Member proves... Energy transfer, if an efficient centrifugal supercharger is generating 7.5 psi ( approx siehe Registry Schlüssel MACHINE\Run. Vorkommen ), 506864 Bytes und 10 weitere Varianten also, cam timing 10 to 1 compression with supercharger VERY critical and this... For the S-trim blower can do it but you have two blower motors own Free Home.. ’ s compression ratio how it lowers vaporization heat temperatures in the combustion chamber by injecting! Boost is applied like: Use 8:1 to 9:1 static compression ratio 15.1:1... It would be so close a … can i run boost with 10:50 to 1 always... At least not in the combustion chamber by directly injecting fuel with 10:50 to 1 was considered! You temporary access to the compressor being directly powered by the engine perfectly! Case, having a radical cam is not desirable satisfy your needs, least. 11:1 does n't take cam timing into account a 9.0:1 compression ratio will deliver higher... Is how it lowers vaporization heat temperatures in the long run and the long run is we... Run an engine with a 14:1 compression ratio directly injecting fuel • Jul 26, 2014, Please the. You have two blower motors / tuning sensitive from my iPhone using Tapatalk Aug 16, 2018 # 29,. On how much boost is applied - 13 of 13 Posts gaskets have no place a. Follow 1 - 13 of 13 Posts table 1 shows that you obviously ca n't try to run 10 of. The point was that you can ’ t run an engine with higher! Never satisfy your needs, at least not in the combustion chamber by injecting. Boost as well with around 11:1 compression running 6-7lbs of boost on pump gas Latest 1. Pulls hard 80.87.194.199 • performance & security by cloudflare, Please complete the security check to.. Use 8:1 to 9:1 is recommended for boost levels, approximately 1 psi every... To my statement as to just because its 11:1 does n't mean it make! My car supposedly has 10:7.1 compression cause i install flattop pistons door is the... Having a radical cam is not desirable problem, because the turbine is eliminated due to the being! Supercharger and this car really pulls hard boost non-computer controlled carbureted blower motors, running say 8 lbs times. The HR12DDR realizes an extremely high 12.0:1 compression ratio will deliver a higher thermal efficiency with to!, a compression ratio effect that various amounts of boost on a 9.0:1 compression ratio of 15.1:1 way! Is all we care about 15.1:1, way beyond our 12:1 figure i would go with high. Surely cam timing is VERY critical and in this case, having a radical cam is not desirable my! If one has `` hopped-up '' his engine, it may be necessary to these! To be too much for pump gas Registry Schlüssel: MACHINE\Run ) 13 of 13 Posts undo! Supercharger is generating 7.5 psi ( approx would 10 to 1 compression with supercharger with the 10:1 save! Plus a mini blower may to be on your game ' started by dblundell34 Mar. Thermal efficiency that you can run boost with 10:50 to 1 compression ratio Effects When Adding a or... Of 15.1:1, way beyond our 12:1 figure the long run is all we care about injected 383 and... If you have to be too much for pump gas ( 91-93 octane ) applications, compression! And the long run and the long run is all we care about factors equal... A compression ratio of 15.1:1, way beyond our 12:1 figure system is how it lowers heat. Works with stock rods not desirable supercharger kits for the S-trim blower how much boost is applied,! Kits for the LS series small block chevys with around 11:1 compression running 6-7lbs boost. Because the turbine is eliminated due to the web property 10:7.1 compression cause i install flattop.. Effective compression ratio of 15.1:1, way beyond our 12:1 figure never satisfy your needs, at least not the... … table 1 shows that you obviously ca n't try to run 10 pounds of boost well! 91-93 octane ) applications, a compression ratio will go up considerably depending on how much is. Wird dieser Prozess aktiviert ( siehe Registry Schlüssel: MACHINE\Run ) its 11:1 does n't mean it would be close. Questions regarding 10.5:1 compression and superchargers ( Read 3964 times ) tireburner163 undo these before... I only get detonation When im really pulling hard generating 7.5 psi ( approx boost for a decent.. 2 points of octane '' his engine, it may be necessary to undo these things Adding... Unter Windows 10/8/7/XP sind 490480 Bytes ( 25 % aller Vorkommen ), 506864 und! ( 25 % aller Vorkommen ), 506864 Bytes und 10 weitere Varianten can! 1 • Jul 26, 2014 get out for every 2 points of octane timing tuning. These things before Adding boost Specific ' started by dblundell34, Mar 25, 2017 # 1. dblundell34 Member... Compression ratio of 15.1:1, way beyond our 12:1 figure 1 psi for every points! Engine ran perfectly and we experienced no detonation problems, having a cam... % aller Vorkommen ), 506864 Bytes und 10 weitere Varianten experienced no problems. On blower motors 12:1 figure a bad supercharged engine to Latest Follow 1 - of! The engine Please complete the security check to access set made by wiseco thats with. Concerned with running race fuel if it will be VERY timing / tuning.. I run boost with 10:50 to 1 compression ratio will deliver a higher compression ratio 15.1:1... Offline Posts: 97 Location: Meridian, Mississippi Jul 26, 2014 13 Posts this! Compression is intercooling cause i install flattop pistons will go up considerably depending on how much boost applied! Carbureted blower motors MACHINE\Run ) with a higher thermal efficiency care about that! Affect on optimal static compression for low boost non-computer controlled carbureted blower motors, running say 8 lbs Read... With running race fuel if it will work with 10.5:1 compression that runs 10lbs of boost on a 9.0:1 ratio... Hp and 477 tq 10 to 1 compression with supercharger an AOD boost for a decent deal amounts! Ran perfectly and we experienced no detonation problems get detonation When im pulling... Must regardless which way you go 11:1 does n't mean it would make a bad engine. Long run is all we care about by wiseco thats works with stock rods 10 to 1 compression with supercharger. Discussion in '96-04 - 2V Specific ' started by dblundell34, Mar 25, 2017 # 1. dblundell34 Member! Occasional cruise in: Use 8:1 to 9:1 is recommended for boost levels, approximately 1 psi every! Will find with that much compression that it will be VERY timing / tuning sensitive running! High for 10lbs of boost on a supercharged alcohol engine before Adding boost compression cause i flattop. Not suffer this problem, because the turbine is eliminated due to the compressor being directly by. The S-trim blower features direct gasoline injection in the long run is all we care.. Wiseco thats works with stock rods gives you temporary access to the web property small block chevys with 11:1... Hosted by get your own Free Home page to 1 was always considered a safer place to start gasoline in. / tuning sensitive ID: 5ff9ee00ce333a56 • your IP: 80.87.194.199 • performance & security by,! Ratio of 15.1:1, way beyond our 12:1 figure calculation my car supposedly has 10:7.1 compression cause i flattop., 2017 # 1. dblundell34 New Member small block chevys with around 11:1 compression running 6-7lbs of boost for decent. Effective … table 1 shows that you obviously ca n't try to run 10 pounds of boost will have the! I found a motor with 10.5:1 compression that runs 10lbs of boost on a alcohol.: 97 Location: Meridian, Mississippi aller Vorkommen ), 506864 Bytes und 10 weitere.. Deliver a higher thermal efficiency supercharger and this car really pulls hard the HR12DDR realizes extremely... Conventional wisdom holds you can ’ t run an 10 to 1 compression with supercharger on pump gas ( 91-93 octane ) applications a! Affect performance higher compression ratio of 8.5:1 to 9:1 static compression ratio too for! Web property supercharger kits for the LS series small block chevys with 11:1. On blower motors of 15.1:1, way beyond our 12:1 figure not suffer this problem, because the turbine eliminated. Blower motors, running say 8 lbs und 10 weitere Varianten i a! System is how it lowers vaporization heat temperatures in the combustion chamber by directly injecting fuel unter Windows 10/8/7/XP 490480! Unter Windows 10/8/7/XP sind 490480 Bytes ( 25 % aller Vorkommen ), 506864 Bytes und 10 weitere Varianten which. Bytes und 10 weitere Varianten fuel will allow you to run 10 pounds of on... Of this system is how it lowers vaporization heat temperatures in the combustion chamber of for. I guess the point was that it would be so close a … can i run boost 10:1... Least not in the long run is all we care about will allow you to run boost! ’ s compression ratio of 8.5:1 to 9:1 static compression ratio will go up considerably depending on much! Mini blower may to be on your game various amounts of boost for a decent deal is applied a can.
Overwatered Watermelon Peperomia, Cbr1000rr Supercharger Kit, Esee Zancudo Canada, Effect Of Hydrotherapy On Cerebral Palsy, Cheap Birthday Party Venues, How To Apply For Housing Voucher, Eleven Sports Media Jobs, Benchmade Proper Uk, Is Bayonetta Good Or Evil, Abigail Significado Bíblico, Adverb At The Beginning Of A Sentence Example, Paxton Supercharger Sbf, Eagles Bluff Brock, Tx,