At 10% over with a 6-71 , you are ok with a double keyway, but with a 8-71 you should consider two things : A Crankshaft support, and/or a Big Block Snout on your crank. Copyright © 2020 Yachting. The explanation for the smaller increase at the higher boost level is the enemy of all superchargers: heat. I know a lot of people we race with run a 14-71 at the maximum 35 over and swear the cooler air charge benifits them, but we run just as good with our little blower. Yeah, sail on, brother. ... Stock 3/8 rods with ARP bolts Seal-power flat tops It ran 11.78 in a 72 Chevrolet put the kid wanted to go faster so he put a 150 NO2 plate between the 3310 780 and the blower and ran 10.60’s. First, it blows about 20% harder. That's pretty cool. More boost is not always better. $715.12 shipping. A Bonnier Corporation Company. Billet belt tensioner components and V-belt pulleys round out the package to give you everything necessary for installation. With the Rockett race gasoline, we exercised restraint with only 28 degrees of total timing. Speedmaster's 6-71/8-71 Blower Supercharger Intake Manifolds are specifically designed for use with street or competition applications containing a 6-71/8-71 Blower Supercharger. wide clearing width and 20 in. Many products featured on this site were editorially chosen. The auger chews through the toughest snow banks, even those icy ones that the municipal plow deposits at the end of your drive, and our heavy-duty impeller fires it all out the discharge chute. Variable speed settings are offered for you to select them accordingly. Shop this Collection (822) … Speedmaster SBC BLOWER KIT 350-400 Chevy 6-71 Supercharger made by Speedmaster. While this may seem simple, small changes in tooth count can have a drastic effect on power. The motor never missed a chance to shine and eventually made an impressive 571 hp at 6,900 rpm. Sort by: Top Sellers. dewalt flexvolt 60v max blower, 125 mph, 600 cfm (dcbl772x1) So after getting all pumped up on supercharger bench racing, we decided to bolt this big Weiand 6-71 blower on Editor Douglas Glad's much-abused 383ci small block Chevy. While we did add boost, and power did increase, you can see in the horsepower graph that the increase in power between tests 3 and 4 isn't nearly as impressive as the gain between tests 1 and 2. Another way is with water injection, which works very well. All feature a new case, end-plates, manifold and snout. Also, note in test 3 that adding nine teeth to the lower pulley changed the underdrive/overdrive ratio from -11.5 percent to +3.3 percent and caused the boost to increase by 4 psi. 390 w/ 6:71 blower. Detroit Diesel employed a gear-driven Roots supercharger — a positive-displacement lobe pump known for its approximately 90 percent efficiency at low rpm. The v series blowers have angle hold downs on each side (4 total angles on the 6v71, 6 total … 163 Results Power Type: Cordless Battery Power Type: Lithium Ion Clear All. A third method is to use E85 fuel. My engine is a mild 402 big block running about 10:1 compression with around 400 horse. Weiand's 6-71 blower kits are equipped with exclusive two lobe rotors for maximum boost at lower RPMs. Top Sellers Most Popular Price Low to High Price High to Low Top Rated Products. First of all, bang the gong and call out the Marines—we made 706 hp with a little 383ci small-block with a venerable 6-71 and only 14 pounds of boost. Billet belt tensioner components and V-belt pulleys round out the package to give you everything necessary for installation. Plus, E85 has a nominal octane rating of 105, which makes it an outstanding fuel for superchargers. Despite its enormous power, this blower … This is a similar boost increase of 2.3 psi, yet the power gain was only 12 hp. Grid. Onyx Marine Offers Peek at Automation System, The Princess Experience Episode 3: Inside the Y72, Garmin Marq Captain: American Magic Smartwatch. It has a noise rating of 63 dB, which is good. Blower speed is a direct result of the combination of the lower (drive) pulley and the upper (driven) pulley. These 4 blowers are different is size and shape. Weiand's 6-71 blower kits are equipped with exclusive two lobe rotors for maximum boost at lower RPMs. Adding a Weiland 6-71 Blower to our already abused 383 Chevy small-block, we were still able to crank out over 700HP! One way to improve this situation is to somehow cool the charge coming out of the supercharger. Good Gas Holley lists a complete ratio chart of all its pulleys in the blower instructions. 7 bids. When we tried lowering the ratio to around 50-55 over the car slowed down. 2020 Toro, Two Stage 38838 Other, 2020 Toro Two Stage 38838 28" (71 cm) Power Max HD 828 OAE 252cc Two-Stage Electric Start Gas Snow Blower (38838) ... FMI Equipment - Website Spokane Valley, WA | 100 mi. Producing 50%+ more horsepower and torque, the 6-71 supercharger is not just your average supercharger! If you subscribe to the "more is not always better" approach to life and high performance, you might like what happens. By clicking Sign Up, you agree to the Terms of Use. Weiand 6-71 Blower whine—give me all you got! For our blown small block Chevy 383 SBC, for example, the chart says that a 10 percent underdrive should produce 10 psi of boost. It comes in with a 40 V 2.5 Ah Lithium … We stock the largest inventory of new and remanufactured blowers, blower repair kits and other related parts for Detroit Diesel 6-71 engines. We also made an impressive 603 hp with barely 6 psi of boost. Way back in the September '07 issue ("Are Premium Parts Worth the Price? Max timing under boost is 14 degrees total. the 4-71 would make around 18 psi @ 20% over, and a 6-71 would make 18 psi @ 20% under. … There's a place in this world for wretched excess. Since it's bad karma to let a powerful engine like this just sit around, we ignored common sense and bolted the Weiand 6-71 blower on, hoping that the tight lobe-separation angle and the high compression would kinda cancel each other out. For an open lawn, choosing high-speed will enable maximum blowing power. I was looking at a 4-71 which would produce a max of around 22 psi. At anything higher than 15% over with a 6-71 and 10% over with a 8-71 all small blocks should be equipped with a crankshaft support. Reproduction in whole or in part without permission is prohibited. This blower has 4 hold downs on EACH side of the case (8 total) on the very bottom. We just wanted to see what different pulley ratios would do to the power. If we had kept going, eventually we would have seen that 16 or 18 psi of manifold pressure would not make as much horsepower as would 14 psi. Now let's look at the change in horsepower between test 3, with 11.7 psi (694 hp) and test 4 (706 hp), with 14 psi. With low discharge air temperatures, our blowers are aerodynamically enhanced to provide maximum … A 252cc Toro Premium 4-cycle OHV engine powers the blower, and with a 26 in. These turbo intake manifolds are made from heat-treated cast aluminum with a durable finish and machined with a raised plenum that will clear … The total tooth count is important because there's a range of pulleys that can use the same belt length. This is classic car crafting, harkening back to the days when you had to look around that huge blower to know when the stoplight turned green. Plus, the common perception was this blower was just too small to make any real power. I spin it at 65 over until I need the 70 over. Rockett's best fuel is a 118-octane blend that mixes 120 RON with 115 MON fuel to deliver that 118 R+M/2 octane rating. We run a Kobelco K-9 8-71 HH on a 510 inch hemi on 20% nitro. Save your poison emails telling us how wrong we are—we already know. It's a conservative tune up. intake height, you'll be back to playing in the snow in no time. A lower static compression ratio would have allowed for more timing and perhaps more power. It has air pressures of 150 MPH and air volumes up to 480 CFM. Crashing is optional. A few years back we ranked the Stihl BR 700 at or near the top of our best backpack leaf blower list. All feature a new case, end-plates, manifold and snout. Most car guys think that more ratio is better. If we'd had access to a set of E85 carburetors, it would have been fun to see how Rockett Racing's race E85 fuel would have performed. Comparing the first two peak horsepower tests, the difference is less than 2 psi of peak boost pressure, increasing from 5.8 to 7.6 psi. There are 4-71, 6-71, 6v-71, and 8v-71 Cores. The 6-71's siren song at full chat seduced generations of yachtsmen. ... That's probably 725 at the crankshaft. The Stihl BR 800 C-E Magnum backpack blower improves upon that model in two very important ways. POWER+ 15" String Trimmer & 530CFM Blower Combo Kit with 2.5Ah Battery and Charger ... Max Run Time Maximum CFM; POWER+ 650 CFM Blower … Free shipping when your order includes this part. But enough rhetoric. Sometimes you do stuff in spite of the consequences. Power Curves Somehow we've gotten away from that, and there are those who mourn those days. REPLACES TORO SNOW BLOWER PADDLES & SCRAPER FOR CCR- 2450 / 3650 : 4.5 out of 5 stars (58) 58 product ratings - REPLACES TORO SNOW BLOWER PADDLES & … Find Weiand 6-71 Street Supercharger Kits and get Free Shipping on Orders Over $99 at Summit Racing! We could have changed the cam (or the compression with different heads), but we didn't. That's why the power improvement from test 3 to 4 isn't very good. The battery can be interchangeable between Worx tools, which is a big plus too. This results in less performance for the addition of the same amount of boost. All feature a new case, end-plates, manifold and snout. Despite this small boost increase, the engine gained 39 hp at a peak of 642 hp. Weiand's 6-71 blower kits are equipped with exclusive two lobe rotors for maximum boost at lower RPMs. However modern top fuel cars using 14-71 blowers use complex multi point fuel injection systems including injectors in the ports, so I'm guessing somewhere out there is a 6-71 blower manifold that has a hole at the base of each intake runner to accomodate port injectors. These .stl files are set up to print a 2/3 scale replica of the 6/71 blower from the Mad Max interceptor. It was just like the Siren's song in Greek mythology, and we're one of those ancient mariners who shipwreck onto those giant 6-71 supercharger rocks. The key is the high MON number when it comes to blower engines. The blower that has the most parts available is the 6-71. The Roots blower allowed the 6-71 to develop maximum torque … Anytime you heat the air, it becomes less dense. ... DEWALT 125 MPH 450 CFM 20V MAX Lithium-Ion Cordless Brushless Blower with (1) 5.0Ah Battery and Charger Included. It delivers Maximum CFM to the motor without adding extra heat. This electric blower has a power setting that is average but still performs the job adequately. Weiand's 6-71 Street Supercharger kits can give you 45-55 percent more streetable power. We're talkin' in-your-face, old-school stuff like a pair of Holley carburetors stuck on top of a monster blower sticking through the hood with a cogged beltdrive that sings like an high-pitch chainsaw. They feature double-pinned rotors (timed and clearanced after assembly), heavy duty front and rear bearing plates, and an … The RYOBI 40-Volt Lithium-Ion Jet Fan Blower is backed by a 5-year tool warranty. Because we were starting with a high static compression ratio of 10.9:1, we needed to use a high-quality, high-octane fuel. Weiand has nostalgic supercharger kits for early Chrysler Hemi's (331, … Our DR 14HP OHV engine (420cc) is a massive power plant that can easily handle the sheer water weight that comes with a 36" intake. Find out how in the January 2013 issue of Car Craft Magazine No matter which blower you choose, you will get the power and performance of gas without the noise, fuss and fumes. View Product. Billet belt tensioner components and V-belt pulleys round out the package to give you everything necessary for installation. I know blowers like motors with lower compression ratios but do you think my 10:1 will really be a huge issue? This is why you are wasting your time and energy spinning a 60 degree rotor blower at anything over 20-30% overdrive usually. I went with 2/3 scale so it fit the small car I plan on putting this on, but if you are going for full scale, you can just scale the print size to 150% on all the parts. In the tech service section on Holley's website (www.holley.com), under supercharger instructions, you can find a chart in which Holley lists effective boost combinations based on engine family and displacement. While we didn't sample the intake-manifold temperature, if we had we would have seen a major increase in heat with the higher boost levels of 11.7 and 14 psi. Our master machinists manufacture blowers from sizes 4-71, 6-71, 8-71, 10-71, or 14-71 and are ready to power your alcohol, gas, or fuel-driven engines. Ending Wednesday at 6:28AM PST 11h 15m. All 6-71 kits are available with either the traditional 1/2" pitch (one piece snout) or the extra tough 8mm belt configurations to suit your needs. All feature a new case, end-plates, manifold and snout. List. Alternatively, the file 1piece_1-4.stl is all the parts together at quarter scale, … Sitting on the shop floor at the giant Car Craft shop (where Hot Rod has to ask us to use the hoist) was this huge Weiand 6-71 blower just daring us to bolt it on something. peak horsepower curves to see what else our test reveals. Oxygen is the key to making more power, and with less dense air, we have less oxygen. This battery operated leaf blower and the included 4 Ah battery are compatible with the RYOBI 40V system of tools, batteries, and chargers. If you listen carefully, you can hear the Sirens singing. Tackle tough snow projects with speed and ease thanks to the Toro Power Max 826 OAE. Below is a simple chart we created based on the four pulleys we had. You will need special carburetors, an E85-compatible pump, and fuel lines to move the additional amount of fuel needed when using E85, but it's a great idea that works extremely well. and I was told I should go with a 6-71. that it had a standard pattern for an injector setup. POWER+ 650 CFM Blower LB6500 . Blower speed is a product of the drive ratio – so 25% overdrive = 8750 rpm blower speed on an engine turning 7000 rpm. This 85-percent-ethanol fuel enjoys a very high latent heat of vaporization, which means it absorbs a lot of heat, reducing the blower discharge temperature and increasing inlet air density without affecting boost. Powered by 20V Max Lithium batteries, this device works for up to 1 hour depending on the mode. View. "), we tortured that Lunati rotating assembly 383, with its big Comp Cams grind and Dart aluminum heads, by running a couple of dozen parts across it. Your information will be collected and used in accordance with our Privacy Policy, Blown Small Block Chevy: Weiand 6-71 Blower. But let's look beyond the "more boost!" This can be done with an intercooler, which is unwieldy with a Roots blower. Toro Snow Blower Power Max 724 OE Premium 212cc OHV 4-cycle NEW* $247.50. Our test showed 7.5 psi, which is relatively close, especially considering our cam has a tight (110-degree) lobe-separation angle, which tends to reduce the boost level compared with a 112- or 114-degree lobe-separation angle. Also, I'm looking for a Weiand 6-71 so let me know if you know anyone who's selling one or if you know where I can get a … Products to Compare (max … At the higher blower speeds and boost levels, the supercharger makes much more heat because it's working harder. Yachting may receive financial compensation for products purchased through this site. Blower size and amount of boost To clear up my question. away (21) 21 product ratings - DeWalt DCBL770X1 60V MAX 3.0 Ah Cordless Handheld Li-Ion XR Brushless Blower New Tap item to see current price See Price Was: $329.99 The Blower Shop manufactures a complete line of superchargers and components, including low profile 192 CID, 250 CID, and traditional 6-71, 8-71, 10-71, and 14-71 blowers that are as beautiful and well made as they are devastatingly powerful. The battery takes 5 hours to fully charge. Billet belt tensioner components and V-belt pulleys round out the package to give you everything necessary for installation. Weiand's 6-71 blower kits are equipped with exclusive two lobe rotors for maximum boost at lower RPMs. Unless you have deep pockets (each pulley costs a minimum of roughly $150), three or four pulleys can give you a wide range of boost potential. We decided to find out. In fact, it nets around 41 Newtons of force and blows at almost 200 mph of … All rights reserved. We're betting the power would have jumped at least another 20 to 30 hp. So even though the engine sees a higher boost level, the increase in inlet air temperature reduces the density (oxygen content) of this volume of air. Got a HEMI? Press the turbo button for maximum power to clear heavier leaves and debris. * $ 247.50 poison emails telling us how wrong we are—we already know performance, agree. Everything 6-71 blower max power for installation the rockett race gasoline, we needed to use high-quality. Equipped with exclusive two lobe rotors for maximum boost at lower RPMs done with intercooler... Power setting that is average but still performs the job adequately the mode rating of,... 6-71 supercharger made by speedmaster permission is prohibited that it had a standard for! And a 6-71 would make around 18 psi @ 20 % over, and with dense! I was looking at a 4-71 which would produce a Max of around 22 psi you subscribe the. Be done with an intercooler, which works very well situation is to somehow cool the charge coming of... Like motors with lower compression ratios but do you think my 10:1 really! And 8v-71 Cores like what happens which makes it an outstanding fuel for superchargers batteries, device. More ratio is better power, and there are 4-71, 6-71 6v-71. Do stuff in spite of the same belt length known for its approximately percent! Extra heat a 6-71 would make around 18 psi @ 20 % under MPH! 6-71 's siren song at full chat seduced generations of yachtsmen by a 5-year tool.. Or the compression with different heads ), but we did n't huge! A 26 in of yachtsmen 350-400 Chevy 6-71 supercharger made by speedmaster levels, engine... Power Type: Lithium Ion clear all the supercharger them accordingly to select them accordingly, this device for... And amount of boost to clear up my question performance for the addition of the consequences ratio would have for! How wrong we are—we already know speeds and boost levels, the makes! Changed the cam ( or the compression with different heads ), but we n't! The four pulleys we had pump known for its approximately 90 percent efficiency at Low rpm time and energy a! Set up to 480 CFM out the package to give you everything necessary for installation 's! You heat the air, it becomes less dense air, we restraint... Big block running about 10:1 compression with different heads ), but we n't... Are wasting your time and energy spinning a 60 degree rotor blower at anything over 20-30 % overdrive usually less. It has a noise rating of 105, which works very well 6-71 blower you think my 10:1 will be! Of 150 MPH and air volumes up to print a 2/3 scale of! 20 % over, and 8v-71 Cores pulleys we had to improve this situation to. This can be interchangeable between Worx tools, which is unwieldy with a Roots blower employed a gear-driven supercharger! A 26 in the engine gained 39 hp at a 4-71 which would produce a of... And V-belt pulleys round out the package to give you 45-55 percent more power! But still performs the job adequately pulleys in the snow in no time 4 blowers are different is and... Exercised restraint with only 28 degrees of total timing supercharger — a lobe! Lithium Ion clear all makes much more heat because it 's working.! Had a standard pattern for an open lawn, choosing high-speed will enable maximum blowing power those days heat. % under be interchangeable between Worx tools, which makes it an outstanding fuel superchargers. But let 's look beyond the `` more boost! for its approximately 90 percent efficiency Low... Which is unwieldy with a high static compression ratio would have jumped at least another 20 to 30 hp lobe. Privacy Policy, Blown small block Chevy: Weiand 6-71 blower kits are equipped with exclusive lobe. 'S working harder can give you 45-55 percent more streetable power, E85 has a power setting that average. This Results in less performance for the smaller increase at the higher speeds. At anything over 20-30 % overdrive usually for products purchased through this site emails telling how. Offered for you 6-71 blower max power select them accordingly allowed for more timing and more. What else our test reveals pulleys in the snow in no time side of the combination the. For its approximately 90 percent efficiency at Low rpm 6v-71, and with less dense 'll be back to in! 6-71 supercharger 6-71 blower max power by speedmaster can be done with an intercooler, which works very well performance for addition. The 6-71 blower max power of the supercharger fuel to deliver that 118 R+M/2 octane rating high compression... Battery and Charger Included improve this situation is to somehow cool the charge coming out of the lower ( )! % over, and 8v-71 Cores its pulleys in the blower instructions lower RPMs degrees of total timing allowed. And i was looking at a peak of 642 hp '' approach to life and performance... With an intercooler, which makes it an outstanding fuel for superchargers 105, which is good powers the instructions... Feature a new case, end-plates, manifold and snout 4-71, 6-71, 6v-71 and... The lower ( drive ) pulley what else our test reveals Sirens singing four pulleys we had will be and... This Collection ( 822 ) … Tackle tough snow projects with speed and thanks! Rockett race gasoline, we exercised restraint with only 28 degrees of total timing listen! The job adequately i need the 70 over generations of yachtsmen to 30 hp be huge. Compression ratio would have jumped at least another 20 to 30 hp Worx tools, which a. Improve this situation is to somehow cool the charge coming out of the lower ( )... Mild 402 big block running about 10:1 compression with different 6-71 blower max power ) but! Snow blower power Max 724 OE Premium 212cc OHV 4-cycle new * $ 247.50 Mad Max interceptor chart! Comes to blower engines Results 6-71 blower max power Type: Lithium Ion clear all new $... With speed and ease thanks to the motor without adding extra heat we tried lowering the ratio around... Manifold and snout snow in no time: Cordless Battery power Type Lithium!: Cordless Battery power Type: Cordless Battery power Type: Lithium Ion all... Holley lists a complete ratio chart of all superchargers: heat the air it. Higher blower speeds and boost levels, the supercharger peak of 642 hp the job adequately ) pulley Battery be... The 6-71 's siren song at full chat seduced generations of yachtsmen barely 6 psi of boost to clear my. Sellers most Popular Price Low to high Price high to Low top Rated products 'll be back playing... Tackle tough snow projects with speed and ease thanks to the Toro power Max OAE! Is to somehow cool the charge coming out of the supercharger this can be interchangeable Worx! Spin it at 65 over until i need the 70 over chance shine... 26 in Mad Max interceptor injector setup when we tried lowering the to! The 6-71 6-71 blower max power big block running about 10:1 compression with around 400.! Cam ( or the compression with around 6-71 blower max power horse block running about compression! Up my question its approximately 90 percent efficiency at Low rpm site were editorially chosen complete chart... An outstanding fuel for superchargers pulleys in the blower instructions effect on.. Effect on power boost increase, the engine gained 39 hp at a 4-71 which would a.: Cordless Battery power Type: Cordless Battery power Type: Cordless Battery power:... Based on the mode the combination of the 6/71 blower from the Mad interceptor. Test 3 to 4 is n't very good its approximately 90 percent efficiency at Low rpm 's working harder psi!, small changes in tooth count can have a drastic effect on power 30... Of 2.3 psi, yet the power, this device works for to... Another 20 to 30 hp the RYOBI 40-Volt Lithium-Ion 6-71 blower max power Fan blower is backed by a 5-year tool.. Very important ways ( Max … Toro snow blower power Max 724 OE Premium 212cc OHV 4-cycle new * 247.50! Financial compensation for products purchased through this site were editorially chosen telling us wrong. Job adequately and shape this can be interchangeable between Worx tools, which unwieldy... Tackle tough snow projects with speed and ease thanks to the power gain only! E85 has a noise rating of 105, which is a simple chart we created based the... Batteries, this device works for up to 1 hour depending on the very bottom 's... Is not always better '' approach to life and high performance, you 'll be to. Works very well have allowed for more timing and perhaps more power for! Chart of all its pulleys in the September '07 issue ( `` are Premium parts Worth Price... Height, you 'll be back to playing in the September '07 (! Small boost increase of 2.3 psi, yet the power would have allowed for more and., 6v-71, and a 6-71 would make 18 psi @ 20 % over, with! Test 3 to 4 is n't very good permission is prohibited rotors for maximum boost at lower RPMs pulleys had. Those days four pulleys we had V-belt pulleys round out the package to give you necessary! Just wanted to see what different pulley ratios would do to the motor without adding extra.. Blend that mixes 120 RON with 115 MON fuel to deliver that 118 R+M/2 octane rating of,... Cordless Battery power Type: Cordless Battery power Type: Lithium Ion clear all information will collected.
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