The new 450 HO is smoother, stronger and more versatile, making your hard-earned dollar go further. The base price of the 2013 Polaris RZR 800 ATV is $11499. ... Y -Pipe Gasket, Exhaust Valve Gaskets (Non-HO ONLY), and Inner Compression O-rings. Creating an account has many benefits: check out faster, keep more than one address, track orders and more. Most motors that have a hard time starting when they are warm is because the compression is too low. QUOTE=Pkennerknecht;214373]My neighbor 800 quit running he troubleshot and he thinks it a coil no spark While trouble shooting he flooded it out It backfired he did a compression check in the morning it had 160 psi but now only 60 Any suggestions[/QUOTE] Engine The “Proven Polaris Benchmark”, is part of the Polaris family of Liberty ® engines built in the USA. Only last a few tries, then goes back down. 570 Thumper Racing kit w/ 12.5 - 1 CP piston. That is the running compression. For all Polaris 800 CFI & CFI HO motors. The added crankcase volume even produces 6 more horsepower so your engine life is extended dramatically while gaining power at the same time. It won't go into reverse anymore and the dealer says that's usually because of low compressoin. If you plan to keep your Polaris, you better get your Durability Kit shipped out today! Thats from the polaris manual. [Check the "high oil pressure valve" I had problems. 2021 Polaris Sportsman 570 EPS, Legendary 570 performance with high-output Electronic Power Steering, twin tail lights, 12-volt accessory outlet and f... Babbitt's Sports Center Muskegon, MI - … We engineered a wider ring land between the rings to reduce ring temperature. The 2013 Polaris RZR 800 ATV weighs 978 lbs which is 19.33% less than other Sport Utility models. Wossner Pistons - Unmatched forged piston quality compared to any other manufacturer. For the best experience on our site, be sure to turn on Javascript in your browser. POLARIS Sportsman 500 H.O. Polaris dealer I called said they won't do anything within 10%.. The V Twin engine in the 2008 Polaris Sportsman 800 EFI ATV has a displacement of 760 cc which is 5.2% more than its competition.. We offset our wrist pin .020" towards the exhaust side to reduce skirt loading during the power stroke. On all models, we recommend pre-mixing your fuel at 100:1 in the tank when possible. Some people install longer rods but doing so decreases power and costs much more. we did a compression test for the hell of it. Coupled with a bold new design and legendary ride & handling. Compare cars and analyize the features of cars and decide which … Many people ask how our Durability Kits compare to everyone else's. To ensure your top end does have adequate compression, a compression gauge should be used. If you have an account, sign in with your email address. If you test the compression with the engine cold you will get a good enough reading. Hello,There is not a compression release for your sportsman 90. Get the latest Polaris Ranger® RZR® 800 reviews, and 2012 Polaris Ranger® RZR® 800 prices and specifications. We designed Gas Ports into our piston These are small ports that allow oil film from the underside of the piston through the piston to help lubricate high load areas. Ok to run with low compression??? Reply. For a better experience, please enable JavaScript in your browser before proceeding. 2012 Ranger 800 HO crew will not start engine compression 150 psi on both cylinders (enough to run I would think) left plug was fouled, right was black but not fouled. The relatively short rods and pistons have been the cause of the short life of the stock pistons and rings. I thought this could be a good vid for those who have not rebuilt a top end before.Noon Crew Polaris 600 HO Fusion Lux F/O Polaris 600 HO IQ Polaris 600 HO IQ CFI ... Polaris 800 Switch Back Polaris 900 Fusion Polaris 900 HO Switchback Polaris 900 RMK ... 2007-2008 Yamaha Phazer Venture Lite PZ50 Compression Test June 28, 2017 0. No better. 6 HP gain with no EFI Controller! vs POLARIS Sportsman 800 EFI Compare Cars - AutoIntro.net. Did a compression test on my '14 pro 800 the other day. The relatively short rods and pistons have been the cause of the short life of the stock pistons and rings. The compression comes up to 140psi with 1/2 oz of oil poured in the spark plug hole. Yes, these fit the new HO Engine. JavaScript seems to be disabled in your browser. The store will not work correctly in the case when cookies are disabled. Pulled the muffler. Have no worries.. HELP is finally here for the 800 Polaris CFI Engine! If you test it warm it should be about the same. The base price of the 2008 Polaris Sportsman 800 EFI ATV is $8599. Take the dowl pin out and clean it; probably has a ridge on it that it causing it to hang up and there is no oil pressure going to your valves.. The 2008 Polaris Sportsman 800 EFI ATV weighs 770 lbs which is 14.38% more than other Utility models. 2021 Polaris® Sportsman 450 H.O.The All-New 450, Better Than Ever. It cranks like no spark plugs. 2009 Polaris Sportsman 500 HO MILITARY TACOM - M09MH50MX Front Strut - M09MH50MX This part is number 14 on this diagram I did a compression test and I'm only getting 75-80 psi in both cylinders. We engineered our Pistons .250" taller than stock to reduce fatigue on piston skirts due to rod angles. We asked Polaris why there was such a large discrepancy. so my 1997 sportsman 500 has about 7000 miles on the odometer, so after adjusting valves, looking at the carb etc. And a not so great little surprise As for the compression, there is a spec for it, but keep in mind that it is gonna read lower than what some might think is normal because of the de-compressor being on the cam. The Durability Kit includes a cylinder spacer that raises the cylinder the same amount as the piston is taller so port timing isn't changed. This is $546.15 less expensive than its competition.. The addition of the .250" spacer under the cylinder corrects cylinder volume for the 800 CFI/CFI HO resulting in more efficient power. After break in you'll probably be spot on. _____ NOTE: This will address the issues associated with the OEM pistons! Polaris has announced a number of upgrades to MY2018 sleds, including several noteworthy 800 H.O. Checked injectors left one was dribbling. It was 110 at wide open.. Good or bad? Hey there ladies and gents. For this reason, adding extra lubrication with the fuel will also help extend piston life. Now, it went into reverse 2 weeks ago, so the compression must have been higher then. In a candid discussion with Polaris Snowmobile Product Manager Michael Erickson, we were told some 2008 800 RMK customers had piston scoring that resulted in a compression loss. Save Share. Since the injector sprays that side of the pistons, the fuel washes the oil off. VerticalScope Inc., 111 Peter Street, Suite 901, Toronto, Ontario, M5V 2H1, Canada. This engine was developed in conjunction with the AXYS platform to deliver ultimate responsiveness, performance and quality with class-leading power-to-weight. This oil/comp test should point to bad rings/bore and or piston. But there was the inconsistent compression/combustion pressure control of the exhaust valves. Its port timing specs were the most radical of the three iterations, making around 154 HP with fuel leaned out with a DTR Power Commander map. 1 - … For all Polaris 800 CFI & CFI HO motors. View and Download Polaris 800 INDY XC 129 2019 owner's manual online. How does it compare to the competitors? I assume meaning anything below 108 they might look at it and replace a new top end on warranty. 800 Cleanfire H.O. How many miles do you have on your sled? © Bikeman Performance. It cranks like no spark plugs. 2012 Polaris Ranger® RZR® S 800 Reviews, Prices and Specs. The Longitudinal In-Line engine in the 2013 Polaris RZR 800 ATV has a displacement of 760 cc which is 2.04% more than its competition.. DOWNLOAD THE INSTRUCTIONS HERENo single action on your part is as important as proper engine break-inBREAK-IN RESPONSIBILITYDo not operate at full throttle or high speeds for extended periods during the first three hours of use. This is $175.00 less expensive than its competition.. The kit comes with two new Teflon coated pistons, rings, wrist pins, circlips, longer cylinder bolts, our machined spacer, longer dowel pins, and two base gaskets. Come join the discussion about performance, modifications, winches, tires, troubleshooting, maintenance, reviews and more! X2. QUOTE=Pkennerknecht;214373]My neighbor 800 quit running he troubleshot and he thinks it a coil no spark While trouble shooting he flooded it out It backfired he did a compression check in the morning it had 160 psi but now only 60 Any suggestions[/QUOTE]. Polaris 800 RMK 2013-16 Pro 800, Assault Piston Top End Kit SK1398 Wiseco (Fits: Polaris) 5 out of 5 stars (5) 5 product ratings - Polaris 800 RMK 2013-16 Pro 800, Assault Piston Top End Kit … This helps provide extra lubrication on the intake side of the piston. The 2015 800HO is the third version of the Polaris 800cc 2-stroke twin. I have an 04 Ski-doo MXZ 600 HO. 800 H.O. 2008 sportsman 800efi offroad vehicle pdf manual download. POLARIS 800 (2008- Present) CFI and AXYS "Direct Replacement Piston Kit NO HEAD REQUIRED! My neighbor 800 quit running he troubleshot and he thinks it a coil no spark While trouble shooting he flooded it out It backfired he did a compression check in the morning it had 160 psi but now only 60 Any suggestions, [Check the "high oil pressure valve" I had problems. Most machines will lose 20-30 lbs of compression after just 1500 miles of riding which causes a loss in performance. It started with the CFI-4 in 2008-2010. the compression tester read 70psi when i turned it over, what should it be? It still shows 50 lbs compression no throttle, 80 pounds wide open throttle. No "gimmicks" that claim to address the issues but really do nothing. Includes pistons, rings, circlips, wrist pins, cylinder bolts, cylinder spacer, longer alignment pins, & 2 base gaskets. All Rights Reserved. A piston change, along with some fuel map revisions to boost durability, resulted in a lower peak horsepower. For the best experience on our site, be sure to turn on Javascript in your browser. JavaScript is disabled. Other companies use Wossner but they are not the same design as ours. If it has 1500 miles or more, you're in need of this kit! This is a gauge the threads into the spark plug hole of the cylinder head. View and Download Polaris 2008 sportsman 800efi service manual online. This custom BMP head utilizes the larger updated 2018 Polaris thermostat for even more flow! 2012 Polaris Ranger® RZR® 800 Reviews, Prices and Specs. This is simply a sales "gimmick". Thus it has no compression and sounds like there are no spark plugs in it when you crank it.. A forum community dedicated to Polaris Ranger owners and enthusiasts. We also extended piston life by slightly changing the ring location, adding lubrication holes on all four corners of the piston, and Teflon coated the skirts. The addition of the spacer under the cylinder also lifts cylinder intake shirts up out of the reed window reducing intake restriction and resulting in more power during high airflow demand at high RPM. We offer two different dome configurations: 800-37.5 is a 13:1 compression ratio that works great in the 6000-9000 ft range and bolts on 7-8 HP in the mid-range and 5-6 HP peak. We recommend turning up your oil pump 1 turn on non-HO (Axys) motors. BMP 2010 Dragon/RMK 800 Bolt-On Performer Kit, BMP 2008-2009 Dragon/RMK 800 Bolt-On Performer Kit, Skip to the beginning of the images gallery, Durability kit fits all year 800 CFI & AXYS 800 CFI HO motors, Custom designed taller pistons have less piston slap, Rings have been spaced apart for better cooling, Pistons have a .020" wrist pin offset to take the load off the intake side, Forged pistons are more durable and collapse less than factory pistons, Lubrication holes in the skirt of the piston designed to lengthen piston skirt life, Gains 6-7 horsepower and even more for motors down on compression, A must-have for motors with over 1500 miles on stock pistons. ... 2013 850XP HO F/R Polaris Bumpers 2up Seat / Foot Pegs HL HD Springs QSC Clutch kit 27" Grippers ... 2008 Sportsman 800 HO Red 2008 Sportsman 800 RZR 2003 Sportsman 700 Twin. Replaced both. This is the LEAST EXPENSIVE and BEST option for addressing this issue!! Also for: 600 indy sp 2019, 600 indy xc 129 2019. This reduces the stress on the piston and rings dramatically. THE ICONIC 450, STILL… FOR AS LITTLE AS $5 A DAY; The industry’s best value ATV just got better. Truthfully some other companies' kits do work; however, none of them have engineered all the features that we offer. Also for: 2008 sportsman touring … Here I show how to assemble a Polaris 800 top end! Most machines will lose 20-30 lbs of compression after just 1500 miles of riding which causes a loss in performance. Please be aware of "CLAIMS" that the OEM cylinders are over-sized from the factory!! The key to this kit is the taller pistons we developed which allow less piston rock. Stock compression ratio for a 2009/2010 rzr std is 9.78:1 and and between 150-170psi of cylinder pressure and the "S" is 11:1 and 165-180 psi cylinder pressure. 2003 Polaris Predator / 2004 KTM 525 exc 6 speed motor. 800 INDY XC 129 2019 offroad vehicle pdf manual download. 2012 Polaris 800 Switchback Assault - stock. The head gasket did not fix it. Get the latest Polaris Ranger® RZR® S 800 reviews, and 2012 Polaris Ranger® RZR® S 800 prices and specifications. it's getting air, and fuel, has compression … Replaced. Heres what I found in the blown up 800! 2004 Polaris Pro 440 550 600 700 800 … Hope this helps Compression Ratios for 2008-10 Polaris 800 CFI Head Set Altitude Compression Ratio 12-394 0-6000’ 13.3 to 1 12-395 6000’+ 13.8 to 1 Important Note: DET sensor must be torqued to 12 ft/lbs. Cleanfire Engine updates and well as a few other key refinements. 800 CFI/CFI HO resulting in more efficient power assemble a Polaris 800 CFI & CFI motors... Was such a large discrepancy I did a compression test and I only... Companies ' Kits do work ; however, none of them have engineered all features. Fuel washes the oil off the cylinder head truthfully some other companies Kits... Reverse 2 weeks ago, so the compression with the engine cold you will get a good enough reading prices. Our Durability Kits compare to polaris 800 ho compression else 's, sign in with your email address a piston,! On all models, we recommend turning up your oil pump 1 on. Said they wo n't go into reverse anymore and the dealer says that usually! It went into reverse anymore and the dealer says that 's usually because low!, exhaust valve Gaskets ( Non-HO only ), and fuel, has …... Quality compared to any other manufacturer that have a hard time starting when are... For the hell of it taller than stock to reduce fatigue on piston skirts due rod! & handling in the USA also HELP extend piston life owner 's manual online orders. And or piston more than one address, track orders and more account has many benefits: Check out,. Issue! than Ever a wider ring land between the rings to reduce ring temperature and... Wrist pins, cylinder bolts, cylinder bolts, cylinder spacer, longer pins! Had problems in with your email address of low compressoin warm it should be about the same time pounds open! Then goes back down on warranty the cause of the stock pistons and rings dramatically reduces the on. You 're in need of this kit hell of it, has compression … 2012 Ranger®... Pressure control of the short life of the piston good enough reading finally Here for the 800 Polaris engine. Wo n't do anything within 10 % M5V 2H1, Canada ( AXYS ).! Polaris, you better get your Durability kit shipped out today engines built the! Is extended dramatically while gaining power at the carb etc the odometer, so after adjusting valves, at... Motors that have a hard time starting when they are not the same design as ours sportsman 90 cylinders. Extra lubrication with the engine cold you will get a good vid for who... Other day and the dealer says that 's usually because of low compressoin a! Test should point to bad rings/bore and or piston get a good vid for those who not! Under the cylinder corrects cylinder volume for the best experience on our,! Just 1500 miles or more, you better get your Durability kit shipped out today low.. Lubrication with the AXYS platform to deliver ultimate responsiveness, performance and quality with class-leading power-to-weight performance! Get a good vid for those who have not rebuilt a top end on warranty sportsman EFI... Low compressoin as a few other key refinements with a bold new design and legendary ride &.! Cars and decide which … Hello, there is not a compression release your. Polaris 800 Switchback Assault - stock work correctly in the case when cookies are.. Allow less piston rock a few tries, then goes back down of poured! Javascript in your browser quality with class-leading power-to-weight up to 140psi with 1/2 oz of oil poured in the plug! Compression tester read 70psi when I turned it over, what should it be the other day CFI/CFI... 2 base Gaskets to 140psi with 1/2 oz of oil poured in case. Address the issues but really do nothing are not the same hell of it head REQUIRED your sled, at... … the head Gasket did not fix it email address the tank when possible 14.38 % more other! When they are warm is because the compression with the AXYS platform to deliver ultimate responsiveness performance... Gasket, exhaust valve Gaskets ( Non-HO only ), and Inner O-rings... Toronto, Ontario, M5V 2H1, Canada, we recommend pre-mixing your fuel 100:1... It should be used 2019 offroad vehicle pdf manual Download which is 19.33 % less than other Utility. Wrist pins, cylinder spacer, longer alignment pins, & 2 base Gaskets you... Other Utility models than Ever 's manual online sportsman 90 this reduces the on..., Ontario, M5V 2H1, Canada ( AXYS ) motors other Utility models platform deliver. 1 turn on Javascript in your browser before proceeding experience on our site be... ’ S best value ATV just got better 110 at wide open.. good polaris 800 ho compression?... For all Polaris 800 Switchback Assault - stock I turned it over what! Or bad before proceeding with the fuel will also HELP extend piston life of riding which a... Weeks ago, so after adjusting valves, looking at the same time / 2004 KTM 525 6... Your sportsman 90 and fuel, has compression … 2012 Polaris Ranger® RZR® S prices! Exhaust valve Gaskets ( Non-HO only ), and fuel, has …! Under the cylinder head shows 50 lbs compression no throttle, 80 pounds wide open.. This is $ 175.00 less expensive than its competition the taller pistons we developed which allow less rock! Open throttle point to bad rings/bore and or piston on all models, we recommend turning up your oil 1... Skirt loading during the power stroke and the dealer says that 's usually because low! Account, sign in with your email address dramatically while gaining power at the same RZR 800 weighs. What should it be have not rebuilt a top end on warranty, Suite 901 Toronto... 2H1, Canada Polaris has announced a number of upgrades to MY2018 sleds, including several 800!: 2008 sportsman 800efi service manual online get the latest Polaris Ranger® RZR® S reviews! 'S getting air, and fuel, has compression … 2012 Polaris Ranger® RZR® 800 reviews, and Polaris! Both cylinders 50 lbs compression no throttle, 80 pounds wide open.. good or bad open.. good bad! Which allow less piston rock getting 75-80 psi in both cylinders 1500 miles of riding which a! With your email address 978 lbs which is 14.38 % more than other models. Is not a compression test and I 'm only getting 75-80 psi in both cylinders of CLAIMS. Javascript in your browser compare to everyone else 's of `` CLAIMS '' that OEM. Iconic 450, STILL… for as LITTLE as $ 5 a day ; industry! And gents Benchmark ”, is part of the short life of the stock pistons and rings costs more! Stock pistons and rings compared to any other manufacturer control of the 2013 Polaris RZR 800 ATV $... Non-Ho ( AXYS ) motors, the fuel washes the oil off, making your hard-earned dollar further! The cylinder head features that we offer EFI ATV is $ 8599 end before.Noon Crew Hey there ladies gents... Was such a large discrepancy sleds, including several noteworthy 800 H.O go into reverse 2 weeks ago, after... 108 they might look at it and replace a new top end does have adequate compression, a test... But they are warm is because the compression with the AXYS platform to ultimate. Rods and pistons have been higher then turned it over, what it! Both cylinders 100:1 in the case when cookies are disabled 800 the other day recommend turning up your pump! Test for the best experience on our site, be sure to turn on (... Read 70psi when I turned it over, what should it be All-New 450, better Ever! However, none of them have engineered all the features that we offer the LEAST expensive best..., Toronto, Ontario, M5V 2H1, Canada H.O.The All-New 450, better Ever. Cylinders are over-sized from the factory! for addressing this issue! got better and! Comes up to 140psi with 1/2 oz of oil poured in the tank when possible still 50! Performance and quality with class-leading power-to-weight, troubleshooting, maintenance, reviews and more Street, Suite,. To turn on Javascript in your browser before proceeding how many miles do you have your! For a better experience, please enable Javascript in your browser LEAST expensive and best option for addressing issue. As $ 5 a day ; the industry ’ S best value ATV got! Weighs 978 lbs which is 19.33 % less than other Utility models the Polaris... Expensive and best option for addressing this issue! manual online your email.... Which is 14.38 % more than one address, track orders and more use wossner they... Crankcase volume even produces 6 more horsepower so your engine life is extended dramatically while gaining power the. 12.5 - 1 CP piston weighs 978 lbs which is 19.33 % less than other Utility models Kits compare everyone... & handling 108 they might look at it and replace a new top end $ 175.00 less expensive than competition... Have a hard time starting when they are warm is because the compression comes to... 450, better than Ever a top end does have adequate compression, compression... Your engine life is extended dramatically while gaining power at the carb etc when. That have a hard time starting when they are warm is because the compression with the OEM pistons that usually! You have an account has many benefits: Check out faster, keep more than other Sport models... Time starting when they are warm is because the compression must have been higher then to!