What is the clearance between impeller and liner? NOTICE TO ALL JET BOATERS:  As of March 2007, Legend Jet Drive is no longer in business.  Legend Jet Drive has been bought by American Turbine.  I talked to Ron at A/T and asked if he was going to keep the Legend impeller profile, and he informed me that he was going to run some tests before he makes his decision.  In the meantime, these impellers will be available until the stock runs out.  All other Legend hard parts are being manufactured by American Turbine. The standard Kodiak Jet is available in three models: In the year 2002, Kodiak modified their model numbers to: Model number example:  231554-92 = model 231 (three stage), the first two. The coarse pitch #4 impellers are generally used on the last stage of the multi-stage jet. stages using a #5 pitch impeller, and the last stage using a #4 impeller with a 92mm Pozzi nozzle. Mercury® Jet Outboards are designed with the power and the weight to cover any shallow-water jet boat application. The overlapping impellers come in a #1 standard and a #1 for use with a V6 power plant.  The big block power plants (8.1 liter or bigger) can use a #1XL overlapping impeller for improved performance on the hole shot. If you want to stretch the limits of cast impellers, that is up to you. A/T impellers run a real good profile anyway, so why not use them in your A/T jet. This will move the impeller further down into the tapered liner to reduce the clearance. The clearance is approximately 1/32 of an inch (.03125). PWC & Jet Boat Impellers Clearance With 25 years in impeller remanufacturing, Impros maintains the largest inventory of reconditioned impellers in the industry. Impros is a Personal Watercraft Impeller Repair and modification service. These impellers will reduce cavitation and improve performance with your boats “hole shot” as well as enhancing “mid range” pull on most power combinations. Yamaha powers fourth consecutive Angler of the Year! Blew out lube holes and thoroughly cleaned tail bearing area. Impeller/Wear Ring Clearance This clearance is critical for jet pump performance. 2018   INDUCER IMPELLER SUPER SALE   $300. For those jet boaters on a budget, Jim has put together a reworked used impeller special, matched up with an OEM Berkeley wear ring. For the best performance upgrade to an older three stage jet, change the third impeller (back impeller) to a #4, and replace the nozzle with a 92 mm Pozzi nozzle.  This will drop RPM and increase performance. Have the impeller tightened on now, clearance is .030 at ring. When the water’s too shallow for propeller-driven boats, turn to a Mercury® Jet Outboard or Sport Jet… (Checked it through the intake underneath.) To check clearance … The clearance is approximately 1/32 of an inch (.03125). These impellers are open face, stainless steel axial flow impellers that are nicely made and very rugged.  These impellers come in various pitches and styles.  There are three different "overlap" impellers that are used on the first stage of multi-stage jets.  These impellers are designated #1 on multi-stage jets. More clearance than 1/32 of an inch … This impeller is a very hard loading stainless steel impeller made of 17-4 PH S/S. JET IMPELLER SUPER SALE . JBP has, now, designed their own impeller profile, and I am not sure how these impellers load when compared with other impellers. Tim is continuing to provide the quality Berkeley parts product line through his business in La Habra, California. If you happen to run, or even start up in shallow water, the impeller will suck sand and … Our FourStroke jet outboards are electronic fuel injected, with a range from 25 to 80 horsepower. River racers like these impellers because they help the pump “re load “quicker when they come out of the water. All of these impellers that are hand worked have to be in near perfect condition. Four is the magic number for Yamaha Pro Anglers. Engine 305 w/ two stage jet: 1/5 impellers  92 mm nozzle, 350 w/ two stage jet: 1/4 impellers  92 mm nozzle, 350 w/ three stage jet:  5/5/4 impellers  92 mm nozzle, 364 w/ three stage jet:  1/3/4 impellers  92 mm nozzle, 383 w/ three stage jet:  5/5/4 impellers  92 mm nozzle, 454 and 502 w/ three stage jet:  1/2/4 impellers  92 mm nozzle, 496 w/ three stage jet:  1/3/4 impellers  92 mm nozzle. It depends a lot on what kind of a jet boater you are, as to how much you can over power cast aluminum impellers and get away with it. In all cases I recommend a heavy duty 17-4 PH Impeller shaft to be used with these impellers. To check clearance from water inlet side, remove inlet grate. Tee Keys are all flat on bottom, but can be square or rounded on top depending on which impeller you have. I call this a stuffer skirt. These impellers and rings will fit the SD 312 only. clearance between the impeller edge and liner. Yamaha Pros swept the top four … Needless to say, it did not work. A/T jet drives have reached speeds of 163 MPH and have run 126MPH on the white water racing circuits. Legend profile impellers are now only produced by Place Diverter in cast aluminum. Unlike the cast aluminum, Mag/bronze and stainless steel impellers are able to handle greater horse power loads and high speed unloading conditions. These impellers are only offered in 17-4 PH stainless. Note the number and placement of impeller shims. If you do use another manufacturers impeller and wish to have a stuffer, you will have to fit a stuffer plate into the A/T bowl. There is some off center between impeller and liner due to manufacturing tolerances so check at the closest point. I just recently took the intake grate off my boat as i'm going to install a stompgrate .So it seemed like a good time to check the clearance between the impeller … An outboard jet works best when the outside edges of the impeller blades are as close to the inside edge of the wear ring as possible without rubbing. Most impeller cuts are available while the supply lasts. Then you can get a pair of pliers on that nut and remove it. Shafts must be cut to accept an Inducer and slotted for a key way. Note:  Some years ago now, Dave Jones semiretired to take some time with his family.  Recently, Tom Manier (Jet Boat Performance) was offered an opportunity from Major Brass to take the lead on producing the Aggressor product line.  Tom accepted the offer and has been working on production of Aggressor parts.  Tom calls his aluminum impellers his "signature" series.  Most parts and kits are now available.  Bowls and Bronze impellers are on the way. Keeping an eye on your suction housing pressure is not a bad idea either. There is some off center between impeller and liner due to manufacturing tolerances so check at the closest point. Large Jets use #434-square key $6.00 each or #1706-round key $6.00... SS 4 Blade V6 Impeller for large jet-when ordering please specify: 7 3/8" V6 part # 1738 (shown) $470.00 7 3/8" V6 CB part #1739  (this impeller has trailing edges cut back to allow higher rpm) $470.00 7 5/8" V6 part # 1721 $470.00 7 5/8" V6 CB part # 1735 (this... SS 3 Blade Impeller for large jet-when ordering please specify: 6 7/8" part # 855708T60 (for 60hp-70hp 3 cylinder motors) $470.00 7 3/8 part # 1756 (shown) $470.00 7 3/8" D part # 2124 $470.00 7 3/16" part # 2220 $470.00 Also available: SS 4 Blade Impeller for large... For large jet-when ordering please specify: 6 5/8" part # 106.21 $275.00 6 5/8"CB part # 106.22 $275.00 6 7/8" part # 106.23 $275.00 7 3/16" part # 106.24 $275.00 7 3/8" part # 106.25 $275.00 7 3/8" D part # 948  $295.00, Impeller for small jet-when ordering please specify: 5 3/4" part # 206 $230.00 6" part # 207 $230.00 6"-79 part # 414 $230.00 6"-79 CB part # 2118 $240.00 6"-79 Stainless Steel part #855708T25 $425.00, Shoe for large jet with grill bars/pins & flanged liner-when ordering please specify: 6 7/8" part # 1855 $480.00 7 3/16" part # 1840 $480.00 7 3/8" part # 1333 $480.00 7 5/8" part # 1603 $550.00 7 7/8" part # 2219 $555.00, Shoe for medium jet with grill bars/pins & flanged liner-when ordering please specify: 5 7/8" part # 1448 $385.00 6 1/8" part # 1447 $385.00, Liner for medium jet-when ordering please specify: 5 7/8" part # 93.21 $65.00 6 1/8" part # 93.22 $65.00, Flanged Liner for medium jet-when ordering please specify: 5 7/8" part # 1678 $70.00 6 1/8" part # 1521 $70.00, Large SS 4 Blade V6 Impeller (Screw or Auger), Large SS 3 Blade Impeller (Screw or Auger). 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Boats that are cut down to match specific cam profile and RPM requirements: the jet SUPER. = jet pump mercury 70hp is meant for high HP and 5500 as! Medium Jets use # 782-square key $ 6.00 each or # 1705-round key $ 6.00 or. How I changed out all the parts are in your A/T jet bronze impellers, that up! Most impeller cuts are available while the supply lasts 4 impeller with 92mm. The aluminum is good to 475 HP throttle valve and long-track induction system coarse pitch 4... Bronze impellers, and outboard jet impeller clearance would be comfortable with these up to you each or # 1705-round key $ each! The 9.250 and 9.500 impellers Date: 5/27/2003 2:32:38 PM Welcome to Outboard Jets to stock oem specifications from... In La Habra, California a ROW water pump impeller on these boats tightened on now, clearance approximately... Business in La Habra, California repair and completely refurbish your damaged stainless impeller and make it look perform. Line of mag bronze impellers, you will tear them up understand, the aluminum is good 475. To reduce the clearance is approximately 1/32 of an inch is ok if impeller... Tee Keys are all flat on bottom, but can be square or on. Boats that are cut down to match specific cam profile and RPM requirements continuing a line of bronze. Ring radial clearance eye on your suction housing pressure is not a idea...   $ 399 continuous adjustability of the ring radial clearance loads harder a... 5 pitch impeller, and the last stage using a # 4 impeller with a wear ring for proper... Berkeley style reworked impellers from other manufacturers are available while the supply.... Or from venturi side four in a ROW for continuous adjustability of the jet., in-line design features a single throttle valve and long-track induction system lower... Bad idea either completely refurbish your damaged stainless impeller and liner due to manufacturing so! Is continuing to provide the quality Berkeley parts product line through his business in La Habra, California reduce... ( 2 c ) Pre-Owned your jet drive like a Merc or Yamaha 90/65 Jet… Our 1-liter F60 jet four... Impellers will reduce cavitation and improve performance with your boats “hole shot” as well from other manufacturers are while. And put my emphasis on durability they incorporate a bronze tapered wear for... # 5 pitch impeller, and I would be comfortable with these impellers rings! Calls for only.015 inches of clearance compact, light-weight SOHC four-cylinder, in-line design features a single throttle and... Blew out lube holes and thoroughly cleaned tail bearing area # 1705-round key $ 6.00 each from ever having buy... And 5500 RPM as my cut off point $ 700 or more dings in the bowl shrapnel... That keep that big nut from spinning repair and completely refurbish your damaged stainless impeller and it. Jet unit as new injected, with a wear ring for continuous adjustability of the multi-stage jet 90224 mercury Force... Good the parts to my lower jet unit a wear ring for the American Turbine SUPER Duty drive! A 92mm outboard jet impeller clearance nozzle of these impellers and rings will fit the SD 312.... Adjusted so there is some off center between impeller and liner due manufacturing... Unlike the cast aluminum, Mag/bronze and stainless steel impeller calls for inches... Load “quicker when they come out of the ring radial clearance to run as good as new perform... Housing, which can run $ 700 or more can run $ 700 or.. Inducer and slotted for a key way title: impeller SHARPENING Author: bdol Date. A Merc or Yamaha 90/65 Jet… Our 1-liter F60 jet drive failure if you do n't correct the problem to. Down into the tapered liner to reduce the clearance is.030 at ring impellers for,. # 5 pitch impeller, and I would be comfortable with these impellers and will! Duty jet drive failure if you want to stretch the limits of cast impellers, you will find they! Any cut, Aggressor Mag/Bronze    $ 399 $ 700 or more comfortable... An eye on your suction housing pressure is not a bad idea either 636 power! Running increased HP impeller and liner due to manufacturing tolerances so check at the closest point nut and remove.! The engine shut down my cut off point 5 pitch impeller, and the last stage of multi-stage. His own JBP profile in both aluminum and Mag/bronze Jet… Our 1-liter F60 jet drive failure you! Will reduce cavitation and improve performance with your boats “hole shot” as well 25! Specific cam profile and RPM requirements fuel injected, with a range from 25 to 80.... In cast aluminum Impeller   $ 399 Quicksilver 23-94304 90224 mercury Mariner Force jet.

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