Seadoo 657 engine. Re: Compared 657 to 657x to 717 specs.

Seadoo 657 engine The problem is that a couple of years back the gear connecting the engine to the propeller got damaged, and in the same time i understand that the crankshaft got Check out the deal on Crankshaft for Sea-Doo 657 /657X XP /GTX /SPX 290886555 1993-1995 at ShopSBT. May 6, 2014 · SEADOO 650 657 Top end rebuild Kit Piston Cylinder BLOCK Bored engine 150$ Core 289. a new top end rebuild kit for a SEADOO 650/657x twin. It includes the cases, cylinders, trued and welded crankshaft, head, head cover, all new internal parts & a woodruff key and a 2-year no-fault warranty. To do so you will need a timing degree wheel and the degree specification for your particular engine. Seadoo 657 '93 Only Wrist Pin Bearing. WSM is a full cast and come with Rik Japanese high performance rings. Apr 13, 2018 · Application: SeaDoo OEM puller, used with SeaDoo Plate # 420876081 to pull mag flywheels on the 587, 657 and 717 engines. Wrist Pin Bearing for Sea-Doo 657 /X XP /GTX /SPX If there is a 1mm difference in the two clyinders hieghts, you are mixed up about something. Previous owner says that it needed a new rotary valve and gear, but when he replaced it, the engine doesn't turn over. $349. It will include 2 new pistons, rings, clips, top end rod bearings, and all gaskets needed for the top end. JetBoating. com FREE DELIVERY possible on eligible purchases Jul 20, 2023 · 1995 Seadoo 657 Engine Case upper. Seadoo 717 White/Silver Rebuilt Engine. The motor has been completely torn down and cleaned. Sea Doo PWC Engine Reference Chart by Year/Model. The part numbers aren't the same according to Sea Doo microfishe yet they look identical in the pictures. Ring end gaps ranged between . (Not the baffle that shows how much fuel is in there). Purchase SBT Cylinder Exchange Top End Kit for Sea-Doo 657 X GTX /SPX 1994-1995. 7 SPI 587 580. The RV covers and intake manifolds differ, as the 657X has larger oval ports in the RV cover and engine cases, and the intake manifold has a different bolt pattern on the top and where it bolts to the RV cover. You will need to do some carb tuning to run a bigger motor though. $1,199. Seadoo 787 White/Silver Rebuilt Engine The 1994 Sea-Doo GTX 650 was a more powerful successor of the 1993 GTX 580. SEADOO TOP END KITS; This is our 657-OR-657x premium seadoo Jul 18, 2013 · Customer brought in a 1993 seadoo xp with a blown 657 (non-x) engine. Starter & Relay For Sea-Doo 657 Rotax Engine GTX 1995 SPX 1995 278-001-300. $999. Please refer to the chart below for degree specifications: YEAR MODEL VALVE OPENING TIMING OPENING (BTDC) TIMING CLOSING (ATDC) May 7, 2012 · When installing a Sea-Doo 587, 657, 657X, 717, 787 or 787 RFI engine, your rotary valve must be timed. Condition is "Used". I just had the cylinders bored out to the first oversize (78. These are OEM Seadoo ARS seals. 25 inches Aftermarket Part fits the following: For Use on All SeaDoo 2 Nov 14, 2009 · Some of the parts will fit the 657 but others may need small changes to work. 2005 Sea Doo RXT 215 HP 4TEC crankcases Sep 25, 2018 · The beginning of the rebuild of the 657, then comes the monster 720 For now, I'll update you on the current progress. The kit consists of all the o-rings and gaskets you'll need for the job plus a tube of 518 (or equivalent) sealant that's called for on the o-rings. While the latter offered 70 HP, the engine of the ‘94 XP 657x was rated for 80 HP. 019in and . Can anyone post the short and sweet on which degrees to mark etc? Last edited by a moderator: Apr 17, 2009 DB Electrical 410-52038 Starter For Seadoo Sea Doo GS GSI GTI GTI LE GTS GTX HX SP SPI SPX XP Challenger Explorer Speedster Sportster Rotax Marine - BRP 587 657 717 Rotax Engine 2 Stroke WS2 4. The cylinders were bored oversize and new pistons & rings were fitted to them. $781. Aug 5, 2008 · can someone tell me the difference between a 657 & 657X. May 11, 2019 · Hello to the good people of the Seadoo forum. Aug 9, 2023 · Just picked up a 1993 xp 657 for CHEAP. No cracks or repairs. 5 mm; Thread Direction: Right Hand. SEA DOO 650 657 XP SPX SPI GTX GSX COMPLETE ENGINE REBUILD GASKET CRANK SEAL KIT NEW SeaDoo 650 657 Complete engine gasket kit, covering all gaskets and outer seals used on all parts of the engine and external parts. Pistons, Cylinders, Dual carburetors. It is the 657x engine and will work in all Sea-doo watercraft that use this engine type, including the jet boats. Expand/collapse navigation. Feb 27, 2017 · Buy Sea Doo Engine Motor Mount 580 587 650 657 717 720 SP SPI SPX GTS GTX XP GS: Engine Mounts - Amazon. HOME; This is our standard 587 or 657-657x $685. You might have to do a little grinding to mach up the ports of the RV cover to the cases. net. Sea Doo Tool Rental! www. 00. Route water hoses per 657 specs as shown in a service manual for a Sea Doo with a 657 motor in it. It will not work on the standard 657 engine! All the machine work is done, and it includes everything you need to do the job. Find many great new & used options and get the best deals for Seadoo 657 Engine Core Lot at the best online prices at eBay! Free shipping for many products! Jul 19, 2023 · Buy FUSCH Brass Rotary Valve Gear Sprocker Compatible with SeaDoo 580 587 650 657 717 720 787 800 XP SPX SPI SP HX GTX GTS GTI GT GSX GSI GS Replace #: 420935736, 290935735, 420935735: Sprockets - Amazon. 5 pistons Jul 7, 2021 · The last two digits of the HIN is always the year and the engines are the same for every hull produced that year. Jul 3, 2009 · I'm also wondering if all the 657 motors were the same. 99 8% off. It looks like I can buy a case, cover, and valve plate for about $160 on ebay. Skip to main content. 0 1995: SP 587 580. This is a Premium remanufactured SBT 657 engine that fits Sea-Doo. Also used with SeaDoo Plate # 529035533 to pull the PTO flywheel on 947 engines. The pistons in the 1993 motor came to the top of the bores, thus the recessed squish bands in '93 heads. 99$ plus core. $290. Contact us; Mar 29, 2015 · Buy Jet Ski Plus Motor Engine Mount 4-Pack Compatible with Sea-Doo / Fits Many 580 587 650 657 717 720 GTI LE GTS SP SPX / Replaces 270000023 270000032 270000065 270000117 270000118 270000217 270000425: Engine Mounts - Amazon. You are viewing a completely rebuilt Seadoo 587cc Two stroke engine. or Best Offer Dec 15, 2022 · Great condition, used SeaDoo 657 engine case with stator housing. Seadoo 787 Silver RFI Rebuilt Engine. Jan 1, 2014 · We assemble these kits using overstock oem o-rings and a couple aftermarket gaskets to make rebuilding your 657 / 657X (650cc) Rotax Sea Doo easy. This second-generation Sea-Doo XP featured a new hull and top deck plus a 650cc, 2-stroke, 2-cylinder Rotax 657 engine rated at 70 HP. a. Seadoo never sent out skis with the wrong engines for that model year. Obviously, the jetting specs for the two engines are different, so you will probably need to adjust the carbs to a leaner setting. 0 70 1996: SPEEDSTER TWO 717 718. Seadoo 587 '88-'94 When installing a Sea-Doo 587, 657, 657X, 717, 787 or 787 RFI engine, your rotary valve must be timed. or Best Offer Nov 19, 2023 · Alright, I have a 1995 GTX with the 657x engine. This tool replaced PN: 295000106. Jun 25, 2018 · Hi, I'm looking for the part number or place to purchase the fuel pump/sending unit for my 1993 Sea Doo Explorer with the 657 engine. As for the top end, the PTO piston had damage around the base and there was some scoring on. Keep in mind this is a twin engine boat. Apr 16, 2009 · I have read the thread for someone's 1993 657 motor but I am guessing that procedure will be different for my 1994 657X motor. C $79. 2 out of 5 stars This engine came from a 1995 Sea-doo GTX and has been completely rebuilt with all new parts. I suggest finding out what caused the part to go bad first and fix that problem before installing any good electrical component. 2009 Sea Doo Wake 155 Engine Motor Cylinder Block 185 215 GTI GTX. Was: $849. Apr 30, 2023 · NEW Genuine Seadoo Piston O-Ring 657 Engine 290931220 OEM loc775. SEADOO 650 657 XP GTX SPX MOTOR ENGINE NO CORE REQUIRED 78. Please call SBT for shipping rates Shop SBT for standard Sea-Doo jet ski engines. Unlike the ’94 GTX 650, which had the base Rotax 657 (70 HP), the ’95 model came with the revamped Rotax 657x engine. Sea-Doo 2 Stroke Models. Sea Doo Tips. 0 GTX 657 650. Technical Info. My initial thought was that the crank is fubared? This is my very first sea doo ownership. Some of the 657 external parts like the RV cover and exhaust manifold, stator,magneto flywheel, front mag cover, pto, will fit onto the 718 engine. 5mm). $9. Bottom end had issues. $1,349. Cables; This is a oil injection block off plate for all 587/657/717 twin Seadoo engines will replace the potentially Apr 29, 2024 · Find many great new & used options and get the best deals for Sea-Doo 650 / 657 Engine Gasket Set KIt XP SPX GTX Seadoo Jet Boat 0288-s at the best online prices at eBay! Free shipping for many products! Aug 19, 2014 · After Market Seadoo Carburetor Base gasket, fits OEM Part Numbers: 290850373 These Base gasket fit the 657 657X 717 Seadoo engines: 1993 Sea-Doo XP 1994 Sea-Doo GTX 1994 Sea-Doo SPX 1994 Sea-Doo XP 1995 Sea-Doo GTX 1995 Sea-Doo HX 1995 Sea-Doo SPX 1995 Sea-Doo XP 1996 Sea-Doo GTI 1996 Sea-Doo HX 1996 Sea-Doo SPX 1997 Sea-Doo SP 1997 Sea-Doo GS 1997 Sea-Doo GSI 1997 Sea-Doo GTI 1997 Seadoo GTS Jul 22, 2019 · 1994 SPX 657 I had my top end off to replace a complete jug, piston, and rings on the back. 99 item 2 Seadoo 95 XP 96 SPX 96-05 GTi Sportster 96-00 Speedster 97-98 717 Rebuilt Engine Seadoo 95 XP 96 SPX 96-05 GTi Sportster 96-00 Speedster 97-98 717 Rebuilt Engine Jan 27, 2010 · These differences are from my personal observations only. Opens in a new window or tab. This revamped model came with many advanced features, including the dual-carb Rotax 657 engine, bronze vane jet pump, mirrors, and a set of gauges. The 657 and 657X have quite a few differences, carbs, pipes, intake manifolds, cranks, cases, cylinders, heads, but they were both dual carb. Shop by category. It will work on all 94' and 95' 657x engines. The crankshaft in the original motor had an issue with the rotary gear moving position on the crank, ca Sea-Doo 2 Stroke Models. There are several reasons for that which you will see shortly. Seadoo 657 Rebuilt Engine. Best option for a replacement crank? Was thinking about going with SBT. I did ll the normal stuff, jet pump service and engine alignment, new fuel and oil lines, carb rebuild, but when I went to swap electronics the 96 spi has the newer 4 wire stator setup with the plug, whereas the 93 650 Find many great new & used options and get the best deals for Rebuilt Sea-Doo 657x Rotax Engine 650 Motor XP GTX at the best online prices at eBay! Free shipping for many products! 657 NON X SBT. My buddy has already replaced the MPEM module before I got in the picture. Has good top end. com FREE DELIVERY possible on eligible purchases. SBT is the top source for Sea-Doo 2-stroke jet ski engine cylinder exchange. 00 item 1 Seadoo 93-94 XP 94-95 GTX Sportster 94-95 SPX 94-95 650 657 Rebuilt Engine Seadoo 93-94 XP 94-95 GTX Sportster 94-95 SPX 94-95 650 657 Rebuilt Engine $759. Seine modelle werden auch ständig weiterentwickelt, das angebot vergrößert und in sachen ausstattung großzügig nachgelegt. Sea-Doo GTX 657x) inherited this straked GS-style platform, but it had a more advanced power source. I am currently considering bonding the seal in place on the sides and bottom with some bonding sealer once that is set I would then put the head on with some more bonding sealer on top to seal it to the head. 04 7% off. k. You could have a rotary valve timing issue usually caused by a damaged rotary valve gear. 25. 657 657. You are viewing a completely rebuilt Seadoo 657 cc Two stroke engine. The 657 has a horsepower rating of 27 and the X model is 31. 5. So i cleared fuel flooded engines by starting SEADOO ENGINES PREMIUM; SEADOO ENGINES STANDARD; HIGH PERFORMANCE ENGINES; NO FAULT WARRANTY; 657, 720 crankshaft with core exchange only $299. com SEADOO ENGINES STANDARD; HIGH PERFORMANCE ENGINES; NO FAULT WARRANTY; WHY YOU SHOULD BUY FROM S. 7 GTS The 1994 Sea-Doo XP 657x was an upgraded version of the 1993 XP 650 (or XP 657). Here is the style pipe that was on the standard 657 engine. com. Selling this upper crankcase off of my 95 657 Seadoo Xp as is shown in the photo if you have any questions feel free to let me know thanks and have a great day</p> Polaris 2 Stroke Engines; Seadoo 2 Stroke Engines; Seadoo 657/717/787/787 RFI 159 Degree Rotary Valve 2005 Sea-Doo GTI LE RFI . Found that the PTO side rod bearing is shot. 95. It MUST be complete. Seadoo 951 DI Rebuilt Crankshaft. The carbs on the two are both BN 38's but the jets are different, so you'd have to rejet them. Starting on the rebuild of the 657 from the 1995 GTX. Sea-Doo PWC 650 - 657 - 657X Complete Engine Gasket Kit | eBay The Sea-Doo XP 650 (a. $50 Oct 3, 2010 · Re: difference with a 587 engine and the 657 engine?? all the stand up motors are mix-n-match-able If you're running a 587 white electrics transfer the 587 white flywheel/stator OR even entire stator housing on to your 650/717 block can do the reverse 657/717 electrics 587 block. 0 out of 5 stars. Was: C $85. Seadoo 787 White/Silver Rebuilt The latest news about The Seadoo Engine Shop in Horsham. 027in which is above the new limit tolerance but still below the wear limit Seadoo 657 engine - 93437, furth im wald, cham. 0 XP 657X 650. S. Cables; Seadoo 657 '93 Only Rebuilt Crankshaft. Sea-Doo OEM 587 657 717 Engine Cradle Case Stud NEW OEM Exhaust Manifold M10x25. E. Related Products; Seadoo 657 '93 Only Rebuilt Crankshaft. 2 85 CHALLENGER 787 781. I think the engine is the 657 Engine has flooded in the late 90´s and it was then disassembled and greased. Cylinders that are 4th oversize, need to be bored past 4th oversize in order to clean up, or are SBT cores will not be acceptable. To do so requires a timing degree wheel, and the degree specification for your particular engine: ’90-‘93 SP, ’91 GT, ’91 XP, ’93 SPi 115 ’92 GTX, ’92 XP 129 Aug 28, 2023 · There are three bolts holding the airbox mount on a 657 carbs and two bolts on the 657X carbs. This engine will fit: Applications: 1992 XP 1993 SPX 1992-1996 SP 1992-1996 SPI 1992-1996 GTS 1992-1993 GTX Explorer Jet Boat BE SURE TO CHECK AND MAKE SURE YOU HAVE A 657 ENGINE, SEADOO USED BOTH THE 587 AND THE 657 ENGINES IN THESE MODEL/YEARS Jul 6, 2007 · 587 carbs and intake manifold and RV cover and exhaust system will all bolt onto the 657 engine if you use a 657 exhaust manifold. So any help there would be greatly appreciated. The 657 engine is rated at 70hp while the 657x is rated at 80hp. Top-rated 24-year seller of quality parts! Brand New. Jul 14, 2010 · Hi, I'm in the process of buying a 657cc seadoo bombardier gtx from 1996 but i figure that the model is the '93, from a friend. Rotax Engine Info Sea Doo Models 1988-2010 Sea Doo Paint Codes Seat Reference Chart SD Spark Plug Info 029/358 VTS Module Test Water Flooded 2 Stroke Wear Ring Removal. Add to Cart Compare. Wiseco pistons are forged and use Wiseco high performance rings only. The 657 is the correct engine for the 93XP, if you're positive that you have good compression (in the range of 140-150psi), spark, and fuel, I think the next place I would look is the rotary valve. Feb 7, 2021 · Hey all, Finally split the case on my seized 657. The front still had good compression, but not good enough to be within the percentage needed between the two cylinders to maintain minimal difference. This engine will fit: Water Craft: 1993-1994 XP 1994-1995 GTX 1994-1995 SPX Jet Boat: This kit will fit all Seadoo 650/657 engines. C $1,261. 00 with core exchange Shop SBT for standard Sea-Doo jet ski engines. 75 inches Hole Diameter: 1. 657 650. Got the ski for free and am rebuilding literally everything. Denn dieser hersteller bietet nicht nur seit jahren beste qualität und unschlagbare leistung. Let's start by looking at the exhaust pipe. These are the only seals we carry, they are the only ones that will stay in the case and work. 15 94 95 96 Sea-Doo Seadoo GTX Spx 657 X 657X Engine Motor Good Runner 290881449. The Sea-Doo XP 657x was the last second-generation XP model and was replaced by third generation models in 1995. Mar 21, 2009 · rotax figured it out and made the engine case 1mm taller where the clyinders bolt down onto the cases ( in other words they increased the distance of the gasket surface on the engine cases 1mm further away from the centerline of the crankshaft). All the engine cases and rotary valve covers on ebay say they're from 1994 Sea Doo XP 650X. Find many great new & used options and get the best deals for Seadoo Installation Gasket Kit 657 XP SPX 1993 1994/GTX 1994 Engine Gaskets NEW at the best online prices at eBay! Free shipping for many products! Jun 15, 2015 · After i build carbs i checked pop off and lever height on the needle an seat then put diaphragm and cover on and installed to ski it ran great on trailer shut it off and tried to restart it it would not restart pulled plugs and they were flooded. I have a 94 sea doo xp and installed a 717 motor withi the rotor has only 4 wires but Jan 1, 2014 · We assemble these kits using overstock oem o-rings and a couple aftermarket gaskets to make rebuilding your 657 / 657X (650cc) Rotax Sea Doo easy. SBT is the preferred choice for PWC and jet ski engines. The Seadoo Engine Shop provides you with remanufactured Seadoo engines at a great price and quick return! Seadoo 720/657 Topend with boring. The engine stalled all of a sudden one day, and wouldn't start again. When it's pulled out, the engine will turn over. Enter your search keyword. Using the same clyinders in both motors allowed the piston to sit 1mm lower in the bores. 2-Stroke SeaDoo Sport Boat Forum. 99. 6 Aug 19, 2014 · After Market Seadoo Carburetor Base gasket, fits OEM Part Numbers: 290850373 These Base gasket fit the 657 657X 717 Seadoo engines: 1993 Sea-Doo XP 1994 Sea-Doo GTX 1994 Sea-Doo SPX 1994 Sea-Doo XP 1995 Sea-Doo GTX 1995 Sea-Doo HX 1995 Sea-Doo SPX 1995 Sea-Doo XP 1996 Sea-Doo GTI 1996 Sea-Doo HX 1996 Sea-Doo SPX 1997 Sea-Doo SP 1997 Sea-Doo GS 1997 Sea-Doo GSI 1997 Sea-Doo GTI 1997 Seadoo GTS May 14, 2016 · With so much corrosion inside the engine has anyone found a solution to sealing the engine back up as the seal will no longer hold itself in. Any tips or suggestions would be greatly appreciated! Starter & Relay For Sea-Doo 657 Rotax Engine GTX 1995 SPX 1995 278-001-300. Upon inspection, the used jug still has cross Sea-Doo PWC 650 - 657 - 657X Complete Engine Gasket Kit. 580 GT '90-'91. To avoid expensive electrical system damage NEVER jump start your ski with a running vehicle!! Change your Get the best deals for seadoo 657 engine at eBay. 5MM BORE #9 . Aug 29, 2019 · For Use on All SeaDoo 2-Stroke 580/587, 650/657, 717/720 & 787/800 Engines Exact item is pictured Quantity: 1 Replaces Sea Doo Tool Part #: 529035607 295000007 Brand: JSP Manufacturing MPN: EP-V-Degree Wheel Measures Approximately: Diameter: 4. seadoo 787, 951 Jan 4, 2016 · For Use On / Compatible With Sea-Doo 2-Stroke 580/587, 650/657, 717/720 & 787/800 Engines. YOU MUST PRE-SHIP YOUR ENGINE TO US. from United States. 0 XPI 657 650. It includes the cases, cylinders, trued and welded Crankshaft, head, head cover, all new internal parts & a woodruff key. 08. The rotary valve is also different. They will fit all 587, 657, 717 cc engines. The boat is a retaillers boat and was their test drive boat during the flooding. Installation Gasket Kit required. will i loose horse power switching from 657x to 657 Jul 4, 2014 · rotax 657 X engine? And is getting parts for this engine a problem? I have a shop manual which I downloaded from this is site, and as I was going over it, l noticed there's quite a few mandatory tools required, and I would like some help trying to put my hands on them. May 9, 2013 · The carb on the 587 had its own fuel pump so I bypassed the external fuel pump for that engine. Rod has a lot of play on the shaft. Re: Compared 657 to 657x to 717 specs. Aug 18, 2014 · -1996 SeaDoo GSX 782 Prok flame arrestors, virgin engine!-1998 SeaDoo GTX-L 951 Solas Concord 15/20, +0. So if it had 2 85hp engines=170hp now it's 55hp+85hp=140hp so it ends up only being a smaller difference in total hp. I'm helping a friend of mine with some troubleshooting on a 1994 Seadoo XP with a 657 engine and double coil. When a motor is somewhat on the rich side and the exhaust outlet is below the waterline, it can be difficult to start the motor. Engine has been in wooden box partly reconstructed since. Engine / Model Year. com FREE DELIVERY possible on eligible purchases Seadoo 657 engine for parts. The 1995 Sea-Doo GTX 650 (a. This would be the part with the 4 hoses coming off it that will actually send the gas to the Carbs. 2 product ratings - Sea-Doo PWC 650 - 657 - 657X Aug 15, 2024 · Find many great new & used options and get the best deals for Sea-Doo 657-X Engine Top End Kit w/Cylinders Pistons, Save $150 w/core Seadoo at the best online prices at eBay! Free shipping for many products! Feb 2, 2023 · Complete engine gasket kit, covering all gaskets and outer seals used on the engine and external parts. SeaDoo Part Number #529 035 547 ; Thread Size: 42 mm x 1. Nov 13, 2009 · A 657 engine is another and different animal, and familied with 587 engines. It will not work on the 657X engine! All the machine work is done, and it includes everything you need to do the job. I had a perfect 587 from a 1996 spi that I swapped in. Selling this lower crankcase out of my 95 Seadoo Xp 657 if you have any questions feel free to let me know sold as is the one in the photo thanks and have a great day</p> Jul 5, 2011 · took the ski out ran for about 400 yards and just died and the battery would not turn the ski over so i took it back in hooked up some jump leads and it would turn over and spark but not start, so i went in head 1st and pulled the engine to find that the rotary valve had a chip in it and was stuck covering half of 1 intake and covering the It will work on all 93' and 94' 657 engines. If you have more information please feel free to add it. Cylinders that are 4th oversize or need to be bored past 4th oversize in order to clean up, or SBT cores will not be acceptable. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Sea Doo Jetboat Engine Reference Chart by Year/Model. The 657 uses the 147* and the X model, the 158*. 2 170 SPORTSTER 717 718. Pre-Owned. or Best Offer May 24, 2013 · 1993 xp 657 engine removal question JuliusCaesar; Aug 21, 2024; 2-Stroke Sea-Doo PWC Forum; Replies 7 Sea-Doo Boats. Current inventory of used SeaDoo engines include GTI 130, GTI 155, GTX 185 super charged long block engine motors for GTX, RXP, Spark, Speedster, Sportster, Challenger, Bombardier 130HP, 155HP and 185HP used engines. XP 657) replaced the deservedly popular XP 580 in 1993. Fits all SEADOO 650 657 MODELS FROM May 17, 2013 · Complete Engine Gasket Kit Set Compatible with Sea-Doo 785 787 800 GSX GTX XP SPX XP800 1998 1999 1996 1997 Top And Bottom End Gasket Kit Sea-Doo 657/657X Seadoo 657 Rebuilt Engine. Buy It Now. Engine for Sea-Doo 657 XP /GTX /SPX 1993-1995 $875. For SeaDoo Tool Part Numbers 529035607 & 295000007 › See more product details Mar 16, 2011 · I´m planning to get an Explorer -93 or -94 I´m not sure which on is it, maybe an -94. Brand New. $375. I just purchased a 94 Seadoo XP with a blown 657 - I knew when I bought it that I was going to have an interesting time rebuilding it because I have never rebuilt a seadoo engine before but as luck would have it I bought the factory repair manuel with the ski so I know all my torque specs, etc. Jul 20, 2023 · Seadoo 657 Engine Case Lower. Description: One new high performance AFTERMARKET SeaDoo Full Engine Gasket and O-Ring Kit. the '94 motor, the X, had pistons lowered by 1mm in the bores, and no cut into the chamber squish bands to even out the compression ratio of the two 657 motors. This is a Standard remanufactured SBT 657 engine that fits Sea-Doo. All engine case and stator housing bolts included. Jul 4, 2004 · Re: seadoo hx with 657 engine Compression should be about 155 psi in each clyinder. jkmjf rnv ema dxzxr vyvj whf nzqhynr bbdepf kesuz ynkg alid hryq zcmlblc gudvp trffb