All engines generate blow-by or leakage past the rings, creating positive pressure in the crankcase. All Star Machine vacuum pumps are warranted for one year from date of purchase to be free from defects in material and workmanship. Anyone who owns an air compressor is aware of this. Clean arrangement with the pump pulling vacuum from both valve covers. All internal parts are interchangeable. How many inches of mercury will it pull ? Why reinvent the wheel ? While I would not suggest their use on stock vehicles, the LSX platform appears to work well regardless of modifications, and the pump eliminates the intake oil contamination that platform appears to have as a result of the PCV system, says Zucco. STAR Machine pumps are typically run at slower speeds than other pumps while maintaining better results. Simply loosen the jamb nut and turn the head (CW) to increase or (CCW) decrease the vacuum set point. The cobra smog pump comes up quite a bit. An external line is often conveniently connected via the unused mechanical fuel pump port on small- and big-block Chevys. What few things I've heard about using these electric vacuum pumps has been pretty good. You don't have to be a vacuum specialist to know the answer. Would this even come close to that kind of performance ? And as always none of our vacuum pumps require oiling to run with out failure. Moroso regulator (PN 22633), top left) screws directly into the vacuum pump instead of a valve cover to prevent pulling excess oil out of the crankcase. These features all contribute to pumps which operate with less friction, less heat and less wear. For a better experience, please enable JavaScript in your browser before proceeding. Although purely passive, the system proved remarkably efficient, and thousands of racers used them religiously until the emergence of modern external vacuum pumps. Size for size and pound for pound, no other vacuum pumps can match the performance, efficiency and reliability of STAR Machine pumps. Pressure and oil mist evacuated from the crankcase is discharged to the external breather tank that vents the pressure through a filter and contains the excess oil for periodic draining. The oil separator is glued together from common schedule 40 PCV pipe and fittings, then turned down in a lathe just to make it look a little better. Obviously, a drag car application dose not require the pump to run for more than 5 min. He also attributes wrist-pin issues to late 90s ring configurations that often promoted air movement on the intake stroke and pulled oil off the wrist pins. 4"Hg @ 12v (draws 12amps @12v) Most of the noise that the pumps emit comes from their exhaust port, which sounds much like a vacuum cleaner. 1969 fastback street car project underway. We use precision sealed bearings with outboard locations for isolation from extreme heat, contamination and ease of service. Adding or upgrading a crankcase evacuation system is a great way to decrease pressure inside your vehicle's engine, reducing the possibility of oil leaks, and increasing horsepower. When buying re-mans from parts houses, some have reported that their's came without the cover, so be sure that the pump you buy comes complete before you order it. Mating surfaces are o'ringed to insure sealing. There are many different factors to consider when shopping for a steel or aluminum crankcase evacuation system including different brands, prices, warranties, performance capabilities, and much more. Another consideration is the smog pumps adverse sensitivity to heat. These gains are on par with and sometimes exceed those provided by a cam or intake manifold changes and pump systems are much easier to install. One guy claimed it mellowed out his engine that had a borderline too large duration cam for the street. The bores will also show a lot less wear. After all, would a specific pump and ratio that's ideal for a four cylinder engine that turns 11,000 RPM while trying to maintain 10 Hg. Yellow line- crankcase vacuum. The double-baffled tank is 9-inches tall and includes the necessary fittings. A breather tank is required and installed as well, to collect oil vapor being vacuumed along with the crankcase pressure. I have used a GM smog pump to good effect. It also introduces harmful contaminants to the lubrication system and poisons the incoming mixture in the combustion chamber. The pull started out with 12.6"Hg @ 2600rpm. The Moroso oil breather tank (PN 85467) provides air/oil separation through interior baffling made from mesh media. Site content is 2022 by Star Machine, LLC. During the 1980's and into the 1990's, serious engine builders who realized the potential advantages of crankcase vacuum utilized these pumps. The pumps flow freely internally when not running, so a failed pump will still vent crankcase pressure and not damage the engine. If I ever take it apart I'll take more pics. It is common to see an 8-to-12 psi oil-pressure drop when running 12-16 inches of vacuum because of this., Fifteen inches of vacuum without pressure-fed pin oiling is generally a safe upper limit.Greg Zucco, GZ Motorsports. In the drag car the vacuum drops to about 1.5" at the end of a high 8 sec run on a SBF running 20+ psi of boost. Smaller engines use smaller pumps and lines while large engines are just the opposite. The key to getting the pump to last was getting the pump away from any heat source, along with making sure that any crankcase fumes were cooled off after going through the oil separator and running through the smog pump. Fifteen inches of vacuum without pressure-fed pin oiling is generally a safe upper limit, particularly in wet sump drag racing application if longevity is an issue, says Greg Zucco at GZ Motorsports, noting some engine builders prefer more or less vacuum depending on the particulars of their engine combination like the ring package, sump type, engine speed and so on. This Reher-Morrison big-block Chevy illustrates the simplicity of an external vacuum pump system. 1989 Saleen 414 358cid SBF 2.8L Kenne Bell S/C. '03-'09 Mustang Cobra R Here's a RacePak graph showing crankcase vacuum during a 6.25sec long WOT 3rd gear pull using ONLY the pcv valve as the vacuum source. Blue line- WOT switch To put 100 CFM in perspective it would require a vacuum pump 3 times the chamber/physical size of our Mountain Motor Vacuum Pump. This allows oil to easily make its way out of the exhaust fitting into the breather tank. Its an engine-performance trick practiced since the late 60s, first with passive crankcase evacuation methods or so-called Pan-Evac systems. Anything above 15 inches may require closer attention to wrist pin oiling (pin oilers) and cylinder wall lubrication. The only modifications needed are soldering the motor wires to prevent overheating, and removing the foam inlet filter from the housing. Our pumps incorporate precision coating processes to reduce wear and friction. Since these pumps were ultimately designed to pump air, no regard was given in their design to generate vacuum. Moroso builds both vacuum systems and oiling systems so we have been intensively studying and resolving these issues for a long time. When properly matched, the result will be decreased pressure inside your race vehicle's engine and increased horsepower. Each pump is dyno tested and must meet or exceed the free flow and peak vacuum levels STAR Machine has published in our Performance Graphs before it is shipped. When installing a crankcase vacuum pump setup, the install is similar on the valve cover side. The object of the Smog Pump, and its subsequent design, was conceived to pump air, not to produce vacuum. Vacuum may draw oil out from between the bearings and journals like a straw; thus, flow increases and the system pressure drops. The pump can also be found in wrecking yards, as Ford used it on various models as a smog pump, but they also used it on Mustang Cobra R's as a crankcase evac pump for the supercharged engines. You DO NOT have to use our intake/exhaust tank to be covered by this policy. Be well aware that smog pumps REQUIRE OIL to run without failure! Outrageous flow numbers from a competitor! 2022 Power Automedia. All aftermarket racing vacuum pumps are a "floating" vane design. In spite of spinning 3000rpm down the freeway, the car still gets around 20mpg. The key to getting the most out of an external vacuum pump lays in choosing the setup that best suits your engine. Of course, many racers run pin oilers for the added security and also to help pull heat out of the piston crowns. In the early days, extreme measures were taken to eliminate all leakage. 2022 JEGS High Performance. Power gains ranging from 10 to 35 horsepower are common. JavaScript is disabled. Look at Mcmaster carr for stuff. Many engine builders monitor crankcase vacuum throughout the engines power range. They are advertising 100 CFM from one of their vacuum pumps. You are now signed up to receive JEGS Deals with text alerts! Initially the electric vac pump worked ok by itself, the purpose of adding a pcv valve to the system was to eliminate vacuum pump's constant 14amp draw on the car's electrical system. These higher speeds resulted in frequent failures rendering them to a throw away status since the damage was usually catastrophic. They keep a bunch odd stuff. The theory was simple: add oxygen to the exhaust gases by pumping air into them. Most of our pumps contain a provision for a built in vacuum regulator eliminating the need to cut holes and welding. Man it would be nice if somebody made a electric vacuum pump that would pull a decent vacuum on a small block. The first step is installing the specific breathers from the kit into the valve covers. With eight distinctly different mechanical pumps and two electric pumps, STAR Machine has an ideal vacuum solution for any racing application. or so at a time. However, if your pump purchase also included our tank and was included as part of the original installation, the vacuum pump warranty is further expanded to be "unconditional" during the first year. Engines running on alcohol have always produced lower vacuum readings, regardless of whether they are carbureted injected or using an EFI system, explains Hall. When researching exhaust style systems, if your vehicle doesn't have mufflers, confirm it will be compatible. Whatever the case, it alerts the engine tuner who can then take steps to rectify it. Exiting exhaust gasses pull a vacuum on the tubes, thus drawing excess crankcase pressure from the sump and discharging it out the collector. 7 of top 10 Finishers for 2010 in NHRA Comp Eliminator currently use our, 9 of the top 12 2010 Division 1 finishers in Comp Eliminator currently use our. We look at every pump application on an individual basis to ensure you get the correct pump for your application. Pulling vacuum with a dedicated pump has been the preferred method for well over two decades now and the technology has steadily advanced with important performance benefits that include: An external vacuum pump evacuates excessive crankcase pressure, resulting in less-than-atmospheric pressure in the sump. Once the correct pump is determined we further fine-tune your application by selecting the proper pulley ratio to satisfy your needs. They can be mounted in any position. Moroso offers convenient pump mounting kits that accept a vacuum pump and alternator off the front of its electric water pump housing via a dedicated aluminum mounting plate. It is turned on when the intake sees 3psi of boost. A vacuum pump is an air compressor and the act of compressing air generates heat. Established in 2002, STAR Machine specializes in crankcase vacuum technology for the motorsports industry. The 100 CFM is on the exhaust side of their pump. Strategic profiling results in more surface area for better heat dissipation. Msg & data rates may apply. The size and speed of the evacuation pump, along with the size of the vacuum line, control the amount of vacuum. Make sure that the exhaust fitting is positioned between the 5 oclock and 8 oclock position if you can, suggests Hall. Not much I'm guessing. Basically by adding that adjustment screw, I basically turned the pcv valve into an adjustable orifice without disabling it's reverse flow check-valve feature With low tension (gapless top) rings in the engine, 4 spd manual, 3.73 gears, and no overdrive, the Shop Mule spins about 3000rpm down the freeway. The electric cobra smog pumps are supposed to work pretty good. They were readily available in junk yards and auto parts stores at a reasonable cost. We provide you with the exact weight, dimensions and performance of our products. Nothing we print here will convince you that our service is different than anyone else. Because crankcase evacuation systems are often a critical system component, it is important to do your research and get all your questions answered prior to making a final purchase. Racers often see the worst vacuum readings earlier in the racing season when the air is colder and the engines run richer due to greater air density, adds Hall. The electric pump pulls around 4" Hg on 12v, about 8" Hg when powered by a 18v cordless tool battery pack. The amount of vacuum produced with a dry-sump pump depends on pump speed, the number of stages and the amount of time each stage spends scavenging oil or creating vacuum. GZ Motorosports offers complete kits for numerous applications, including LSX builds (PN SPVPKLSX). While the rotating assembly is largely credited with creating windage in the crankcase, we must also remember that with pressure in the crankcase, rapidly descending pistons tend to pump wind toward the rotating assembly, exacerbating windage and parasitic drag. All Rights Reserved. Mario Johnson Reveals Spectacular New 67 Camaro For 4.84 Shootouts! A worthless number unless you plan to blow up balloons with it. The hoses are -12 lightweight pushloc (3/4" id), and fit the electric pump's ports perfectly. Vacuum in the system increases the oil volume that the engine flows based on the reduction in resistance the oil pump sees on the pressure side. Any vacuum pump submitted for warranty NOT using our tank that is determined to be damaged by foreign engine parts I.E. That makes vacuum pumps one of the best bang-for-the-buck products available for both high performance and racing applications. These steps included special reverse-lip crank seals and silicone sealing the valve covers, intake manifold and so on. External vacuum pumps enjoy a well documented performance record. Morosos regulator (PN 22629), bottom left, offers 360-degree adjustability. More current national records have been set in NHRA, IHRA and PDRA using STAR Machine, 8 straight IHRA Pro Stock National Championships won using our. I also attached an exhaust hose to route the fumes outside the passenger compartment, under the car. I tested one and only got a couple inches of vacuum though. Running a high-volume pump is often necessary. All of the leading professional engine builders abandoned the use of Smog Pumps over a decade ago with the advent of purpose built/aftermarket vacuum pumps. Whats The Reason Enthusiasts Cant Get, What Tony Stewarts Involvement Could Mean For The, High-Performance Racing Fasteners: How ARP Fasteners Are, Brotherhood Built: Behind The Scenes At Firepunk, Engine Spotlight: Butler Performances 535ci Blown, Dobbins Clocks First 3-Second Mountain Motor Pro Stock, BirdDoc: The Six-Speed GT500 Record Holder And Its High Flying, Video: Installation Time-Lapse Of The Fresh New 3M Wrap On, Summit Motorsports Parks Transformation Into A Pulling Paradise, NHRA Adds A/Fuel Program To Top Alcohol Funny Car Class For 2023, The Dragzine Podcast Episode 142: Joe Zolper. Most of these pumps are basically the same internally, just clocking of the inlet/outlet is different. Power adders such as turbochargers, superchargers or nitrous oxide increase cylinder pressure and blow by and thus require larger pumps and bigger lines to accommodate increased airflow. The check valves prevent exhaust gasses from flowing back into the engine through the valve covers. Each crankcase evacuation system is made from high-quality components and assembly so you can get the performance you want at a price you can afford with the assurance you need. Take two mostly identical engines, except one shortblock requires 40ft/lbs to roll over using regular oldschool piston rings, the other uses a modern low-tension ring pack and requires only 13ft/lbs to roll over. Both CFM and vacuum will diminish as the smog pump gets hotter resulting in inconsistency. This action relieves blow-by pressure under the rings, reducing windage and contamination. If an engine loses power at a certain point in the rpm range for example, the data logger may show a sudden increase in blow-by pressure, indicating the likelihood of lost ring seal due to high-speed ring flutter or detonation, among other conditions. The Fora platform includes forum software by XenForo, http://www.youtube.com/watch?v=q5QFCS9g44A, https://www.youtube.com/watch?v=loO8jUh6OEk, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. As a rule, its better running a larger pump at slower speed to achieve the level of vacuum required while preserving pump longevity. All STAR Machine regulators are infinitely adjustable, there are no springs or shims to "fool" with. Manufacturers offer a variety of pump sizes to accommodate large and small engines and various horsepower ratings. JEGS offers crankcase evacuation systems online and with over 60 years in the business, JEGS is the engine parts superstore. Smog pumps were conceived in the 1960's by the auto manufacturers to help reduce exhaust emissions. also be the ideal components for an 900 CI Pro Mod Engine that turns 7800 RPM while trying to maintain 22 Hg.? We don't use vague terms such as "lighter than" or "more volume than". Though the instructions can vary depending on the crankcase evacuation system, in general, the directions are similar to installing a crankcase evacuation system. They were never engineered to be used as a vacuum pump. External crankcase vacuum pumps will provide significant power gains on both racing and high-performance street engines, primarily by promoting superior ring sealing. Evac pumps don't really increase power much themselves, but they do allow you to run lower tension piston rings which can net you quite a bit of power. Nitrous system was NOT turned on, electric pump was NOT turned on, this pull was NA. Star Machine factually represents our pumps performance, size and weight. Thank you! It is very important to carefully check drive-belt alignment and adjust when necessary to achieve perfect alignment between the pulleys. I was going to turn the pump on and off with my Megasquirt ECU and setup a table based on load and rpm. thanks for the info. Most pump kits include mounting hardware that provides the ideal pump location and proper drive pulley alignment. Application (for the pump) was 01' LS Camaro/Firebird and I bought the pump from NAPA for $70. I'm not going to get into a debate with those who think an electric crankcase evacuation system is not or should not be needed b/c I have my own reasons for wanting one: To minimize any oil leaks.and they work. What they have failed to mention is that this flow number is NOT on the suction side of the pump. Pressure evacuation reduces this effect. Our tests have shown that a fixed vane design pump, under extreme racing conditions can lose as much as 15-20% efficiency. A vacuum pump must be sized to compensate for whatever level of leakage might come from these sources. Using sound engineering principals combined with creative concepts and modern manufacturing techniques, STAR Machine is dedicated to providing only the finest quality vacuum pumps and components. If your car cruises at 2500, that equals a constant savings of roughly 13hp while you are driving down the hiway. Extensive research and development, on and off track testing and feedback from past and current world champion racers and engine builders has led to what STAR Machine has to offer. A JEGS expert is ready to answer your questions and help you find the crankcase evacuation system that you require for your specific application (such as a SBC, BBC, SBF, BBF, SBM, BBM, or other engine). Every company in the world tells you they have great service. The electric vac pump is a Delco 215-425, available new from ebay or amazon for around $100. Electrical parts excluded. I should add that the 355" engine is well sealed, no dipstick (oil level sight glass), Total Seal gapless top rings, and a 114 LSA nitrous cam. Engines running on alcohol have always produced lower vacuum readings. It includes the VP 104 pump, pulleys, Gilmer belt, braided hose, breather tank and vacuum-control valve. Due to their design, smog pumps also have very poor maximum potential vacuum numbers. This design eliminates fastener failure, key/keyway wear and dissimilar thermal expansion rates which allows reduced clearances for greater efficiency. From a simple vacuum gauge to a dedicated channel on a data logger, crankcase vacuum pressure is often monitored and plotted along with all the other relevant engine data to provide a more detailed picture of how crankcase pressure affects performance. Holes were made using a holesaw in a drill press, the hose barbs are made from plastic ABS pipe connectors. Thank you! In addition to the pump mounted regulator STAR Machine also has traditional models, inline models that can be spliced into a hose at any location and models that mount directly onto other pumps containing -12 AN fittings. This hybrid system uses an electric pump that's sort of hidden between the firewall and dash. Direct consultation with the manufacturer will ensure the best possible choice. The concept was first introduced by Bill Million at Hedman Hedders and initially developed on the engine dynos at both Edelbrock and Traco Engineering. Here's a short list of applications and part numbers to look for In a fixed vane design, clearances are continuously increasing with temperature. Sounds good. Then I would not have to worry about trying to get a six groove pulley made for my Aerospace vacuum pump. Early pump designs experienced contamination problems and required constant cleaning and maintenance to prevent the pump vanes from sticking. Shown are two vacuum relief valves from GZ Motorsports (PN 101A, 101B), top left. The above policy is currently in effect, has been in effect since September 2002, and has not changed. We made some push-in fittings to replace the crossover assy (machined from Delrin plastic and feature double o-rings), making them easy to remove when adjusting valves or adding oil. That being said; the benefits of crankcase pressure evacuation are particularly effective on larger displacement engines or those with power adders that generate higher cylinder pressure and more blow-by. As the air gets hotter later in the season and racers lean the engines out, they see vacuum readings go up, especially at idle and on the two step.. At STAR Machine we feel our service sets the standard that any business should be trying to achieve. Note for those with BOOST that may be concerned about possible check valve failurethe pcv valve acts as a check valve if the flow direction is reversed, so an in-line check valve failure under boost conditions would make the pcv valve revert to it's highest restriction mode. Crankcase pressure is evacuated via the valve cover and pumped to an external tank which vents the pressure and retains excess oil for periodic draining. Reply HELP for help or STOP to opt out. Wet sump engines can now run as much as 16 to 18 inches with modern piston-and-ring technology, he adds. Crankcase pressure hurts power by upsetting ring seal, and it opposes piston motion by creating drag and windage. These smog pumps were being used for the complete opposite purpose for which they were originally intended (to generate negative pressure as opposed to positive pressure). Some orders may take longer to arrive due to shipper and supplier delays. Typically, a crankcase evacuation system with mufflers is required as backpressure is needed for it to work properly. It pulls about 5" of vacuum continuous. Quick crude example Dart 348ci, Ed Curtis cam/valvetrain, Precision 76mm, Holley Dominator EFI, CNP ignition, tons of Holler EFI small parts, 4"dp, 4R70W w/T-brake, new suspension coming soon. It prevents excess pressure exiting the crankcase through the oil drain-back holes in the cylinder heads, which could prevent oil return flow, affect the oil level and create unwanted aeration in the oil supply. Since i'm only using the electric vac pump for short bursts of WOT, i could easily power it with a 16v or 18v cordless tool battery pack if i wanted to, but I have not seen a need to do that even when spraying a 250 shot. High-end systems running as many as five or more stages often dedicate all but one, sometimes two, stages specifically to vacuum. The only difference is the mounting threads one is 1/2-inch NPT and the other is 7/8-14 NF. We specialize in vacuum pumps; it's all we do. The ideal pump for any application is the one that satisfies the requirements with the least parasitic loss. Pump choice is primarily based on engine size and horsepower level with appropriate attention to pump speed and vacuum line size. The hoses are then connected to both the intake side of the check valves and the valve cover breathers, with care not to let the hoses touch the hot exhaust and headers. Due to the electric pump's flow thru impeller design, any resulting crankcase pressure would be relieved thru the electric vac pump's outlet port, even if the pump were not on or had failed. or so at a time. Whether you're a professional engine builder who has been using vacuum technology for thirty years, or a racer with no prior vacuum experience, our experience is at your disposal. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Depending on engine size and the number of scavenge stages, a dry-sump engine will likely not require a separate external vacuum pump. Engine builders still debate the amount of vacuum required to neutralize crankcase pressure with optimal effect on windage and ring seal, while still minimizing combustion chamber contamination. This reduces oil leaks and increases horsepower from reducing build-up crankcase pressure. The truth is that at one time or another we have all had our moments with someone we have spent our money with and wish we didn't. 1"Hg @ 9.5v If I buy a part or parts from you do not send me those parts through USPS, I would actualy like to get the parts I purchase. Those little pumps work great, I hooked one up for my buddy on a '72 Camaro with a 540 in it. Pump speed is determined by the drive ratio between the crank pulley and the pump pulley. Hall also cautions that pulling too much vacuum in a wet sump system can affect overall oil pressure. Made from 6061 billet, it can be easily disassembled for cleaning and works with any vacuum level. Conventional wisdom says that 12-to-14 inches of vacuum is required to generate beneficial power gains. Within this narrow range, builders can employ lower tension rings to reduce friction without fear of losing effective ring seal.
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