Dec 15, 2010 #1 my dad has a 02 800 the NON HO version. It is a widely held belief that the OEM Polaris pistons are too small from the factory and this is where the issues lie with the OEM. Some aftermarket pistons, such as the ones used by MTNTK Performance and RK Tek, are made of forged metal. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). 6) ANY running of the thinner walled cylinders (2008-2012) can lead to stress and fatigue on the cylinder skirts. The drop in kit consists of a custom 2 ring piston that is designed to have tighter cylinder clearance which will help to minimize piston "rocking" or "slap" in the cylinder. Installing ANY clever named piston kit will NOT fix your thin walled cylinder skirts! One would hope that any of these other pistons would also contain this same OEM offset. The new engine was torn completely down and inspected for deficiencies. admincheat givearmorset tek 100 admincheat givearmorset flak 100 Ascendant Weapon Sets. Wishing you all a very Merry Christmas, from our family to yours! The TRUTH of the matter is that MOST of these "Fix Kits" are nothing more than an Arctic Cat 800 Piston under a different name. Box 1513, Woodstock, Ontario N4S 0A7 Order and Technical Assistance Phone : … They are designed with hard anodizing on the ring lands, pin boss and crown underside AND custom coating on the crown. Our custom pistons HOLD their tolerances.. AGAIN.. Both of these kits offer SIGNIFICANT performance enhancement and extend engine life! As you provide your questions below, we'll relay them to Kelsey and staff. Used in there Billet cylinder head. We will be closed for the holiday weekend, enjoying some much needed family time. AUTOMOTIVE DIVISION POWERSPORTS DIVISION. Clever named kits do not address the MAPE Crank Issues! The Rod-Ratio is the ratio of the rod length to the stroke of the engine. Convincing you to believe that their piston has an offset where others do not is simply misleading. RK tek pistons? 7) Another held belief is that the new AXYS piston has addressed the OEM short-comings mentioned above. 4 personnes étaient ici. its got 1900 miles on it with around 100 psi of compression so we are going to replace the pistons. Kawasaki Ninja ZX-14R. Running our piston vs. this piston WILL show some performance enhancements. The MTNTK fix kit addresses piston failure that is common with some Polaris engines. Installing a better designed piston that will remain in tolerance (spec) will greatly aid in helping your thinner walled (2008-2012) cylinders survive. 1245 Industrial Park Rd.Preston, IDAHO 83263PHONE: 208-852-3221Email: firstname.lastname@example.org. Ok, so I was reading the rk tek article from there web site about the series 111 motors and wanted some feedback on that. Doug Gardner. Anyone have any experience with them? Ski-Doo. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. RK Tek is located in Preston, Idaho and is owned and operated by Kelsey and Rex (hence RK). Max Trains et Hobby. These are very clever marketing terms to impose the "idea" that by installing these kits that the engine is "fixed" and will no longer be prone to failure. Snowmobiles: Brands, Performance & Modifications. This is 100% false!! You MUST MEASURE the piston in order to determine if the piston is "GOOD". ALL of the 2008-2012 800 Engines were prone to lower cylinder skirt cracking! Arrived at my house on Tuesday morning. Yes, that's right, RK Tek draws results from "real world" testing, 1245 Industrial Park Rd.Preston, ID 83263 Phone: 208-852-3221, Copyright © 2017 RK Tek - All Rights ReservedCreated by Mountain West Web Design. If you're on a budget and want to try some slightly used Pistons go with RK Tek. Based on these FACTS, I think it is safe to assume that the rod-ratio is not an issue and claiming that is nothing more than a scare tactic. Please visit our website at www.2strokeheads.com It is a sports bike from Kawasaki, which is one of the fastest bikes in its segment. We feel this piston to be mildly superior to the previous piston but also feel it is a lesser quality piston than what we offer. More clearly, the rod ratio is too small for this engine. If you are ordering cheater heads, we will need to have your OEM heads to make the modifications. Christmas came early for a few of our customers! I picked up a set of these on Friday. Friend of mine having fun with a Polaris RMK 800 PRO 2013 mod with RK TEK and SLP Stage2 kit. 2 were here. Heat is one of the primary causes of skirt collapse and skirt collapse is ONE of the primary issues with the OEM design.. FUEL (NOT COOLANT) is the #1 cooling agent for ANY Engine (important to remember) and this engine has none! But is useable. The Ski Doo 800HO and 800R engines have a 132mm rod and 75.7mm stroke yielding a rod-ratio of 1.74. RK Tek sets itself apart from other performance shops by testing its products in the best lab in the world - the great outdoors. People always state "I pulled my OEM pistons and they LOOKED fine and compression reading was still in spec!". 2) The 2008-2009 CFI-4 engines had a VERY thin lower cylinder skirt that was prone to cracking especially once the OEM piston gets lose in the bore. Installing ANY piston kit (including ours) AFTER running the OEM pistons will NOT remove any stress or fatigue that MAY have already occurred in your cylinder. When you are talking to us, you have our full attention and will not be cut short. This Block is being sold with 2 Matched RK Tek FIX PISTONS. Cart empty × Cart empty ... Polaris Patriot 850 Dual Ring Direct Replacement Pistons; Motorcycle Performance. FEED SYSTEMS MANUFACTURER AND SUPPLIER All products manufactured to PED and ASME standards FEED SYSTEMS MANUFACTURER AND SUPPLIER All products manufactured to PED and ASME standards Applications SR-TEK containers setup Applications Why SR-TEK What our brand stands for Why SR-TEK References Some of our projects References PRESSURE TANKS Stainless steel swing … Polaris thickened up the skirt, again, for 2011-12 CFI-2 Engines. Links : Use the side menu to navigate through our site. Does any one have an opinion on this? Some will also have you believe that they have installed a "special" pin offset. RK Tek also builds one of a kind custom CNC machined parts for any application. The RK Tek Line of Customs Pistons are VERY Unique... ALL pistons are designed from a blank sheet of paper and uses only the highest quality of components. They are also lighter than the OEM Piston and that will help with the acceleration from a stop. In other words.. your piston can LOOK perfect but MEASURE out of spec. In other words, IF your cylinder is fatigued, it will STILL be fatigued once a better piston is installed. Now busy week for us here at the shop building these sleds 落 stay tuned This allows your 2011-2012 engines to run with the better 2013 cylinder. RK Tek 2 Stroke Performance. The Arctic Cat 800 has the approx 130mm Rod and the same stroke. 3) For 2013-Present, Polaris thickened up the cylinder intake skirt, once again, to help alleviate all the cylinder skirt failures. Sorry guys... this is the reality! You can have a BROKEN off lower skirt and the compression reading will not change! This Price Already Includes a Refundable Core Deposit of $100. With the Polaris CFI Engine (ALL 2 Injector Models), the lower half of the engine is dry.. meaning there is little to no fuel entering there. Hopefully, this article will clear up some of the mis-conceptions that surround this engine and its internal design? These pistons, as all my other CUSTOM pistons, follow this same design procedure, This thicker skirted cylinder WILL install into your 2011-2012 cases ONLY if you modify the upper case half to accept the thicker skirt. 4) There is a common belief that the 2013 and newer engines have a cylinder or crankshaft offset compared to the earlier years. 1) The 600 Polaris Engine is a great engine!.. 5) It is also believed that there exists a Rod-Ratio issue with the Polaris 800CFI engines. NOTE: We return every phone call if a clear message is left. It has EXCESSIVE skirt taper.. ALL my pistons are designed from a blank sheet of paper and made with custom components (No, they are not 100% Wossner). It suffers from skirt collapse and it is also WAY too HEAVY! THIS is a great modification to perform and will help with crank failure. If you have any questionscall us anytime we're here to help. This is a great modification and can be done by any competent machine shop. Our CUSTOM pistons (Direct replacement, Drop In, AND Big Bore) are CUSTOM designed! These pistons have about 1500 miles on them. They claim that the cure for ring flaking and poor performance under long loads for the series 111 motor would be to replace the OEM piston and rings and head with there dual ring pistons and there hemi head. The OEM Polaris piston is 100% in spec and the proper size when new in the box! Visual inspection will tell you NOTHING about the size of your piston. These Forged Pistons are Engineered 70 Grams lighter than Stock -- Engineered with proven results by Kelsey Manning at RK TEK to Ensure Skirts Will Not Rock and Crack. This is not a bad change but does very little to aid with the skirt collapse, extreme piston weight, and heavy ring drag. Yes, that's right, RK Tek draws results from "real world" testing, 1245 Industrial Park Rd.Preston, ID 83263 Phone: 208-852-3221, Copyright © 2017 RK Tek - All Rights ReservedCreated by Mountain West Web Design. Look what's in Dirt Bike magazine this month. They have very a proprietary design that is unique to ALL of our pistons. Ski-Doo - RK Tek 827 High Elevation Domes. you can also send in your stock haed and he will cut it for his domes. LOOKING fine and MEASURING fine are 2 VERY different things! This is the first start up after complete too end rebuild including new plated and machined cylinder and Rk tek drop in piston kit. RK Tek spent a better part of the 2008 Season developing a performance package for the new Rotax 800R(ETEC is the SAME ENGINE) Engine. Skirt collapse happens usually WITHOUT any scoring or visual appearances on the piston. Installng a RKTek Drop in Piston and Head Kit on a 2012 Polaris Pro RMK 800cc. well worth it if your looking for some more performance. The phone is busy all day long servicing our clients. I'm not sure as I'm a newbie. Wiseco is a USA manufacturer for performance products such as forged pistons, clutch baskets, gasket kits, connecting rods, valves, crankshafts, and camshafts for motorcycles, dirtbikes, ATV, snowmobiles, PWC and automobiles. the rktek pistons are custom cut from sea doo pro x pistons and must have his cylinder head to work. Remember this, VERY IMPORTANT, a compression check will tell you little to nothing about the health of your skirts. The piston kits we offer (some call a fix kit.. we do not) are the highest quality piston on the market today.. Came off a 06 skidoo 800 rev. In 2010 Polaris thickened up this skirt. This FUJI crank WILL install without any modification into any 2008-2017 engine case. The Polaris rod is approx 132mm in length and the stroke is 70mm yielding a rod-ratio of approx 1.88. Link to his channel: http://www.youtube.com/user/vipe84 1) The 2008-2012 Pro 800 CFI Engines use a crank manufactured by MAPE. The truth is that the OEM piston's tolerances are in spec, they just don't stay there. Polaris Patriot 850 Dual Ring Direct Replacement Pistons. admincheat giveweaponset 0 100 admincheat giveweaponset 1 100 admincheat giveweaponset 2 … If you are ordering cheater heads, we will need to have your OEM heads to make the modifications. RK Tek Inc is your premier 2 Stroke Performance Shop.. ALL we do is 2 Stroke Engines! 1/4 '' shim under it, then this is the LACK of lower piston skirt support '' to `` ''. Piston skirt support if a clear message is left 83263PHONE: 208-852-3221Email: @. Sleeves HOME AUTOMOTIVE POWERSPORTS Company Info Dealer application Catalog Request Overstock piston Sale your thin walled skirts. Will still be fatigued once a better piston is `` good '' have his cylinder head to.. 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