Posted: Sun Jun 10, pm. I recently posted that I thought the motor in my SX sucked a valve. Well, my weekend continues to get worse. I was running back to the dock at the end of the day yesterday at 10, RPM's, the motor made a loud bang and let go.
Engine Internals Upgrade Kit, SVHO
It appears that the piston just exploded or came in contact with the valves. Anyway, the motor is completely trashed. It was running great at the time, idled well, great power, etc. Oil was changed at the begining of the season and everything seemed fine. I am pretty sick over this due to the cost, work involved and timing right in the best part of the summer.
Any help anyone can provide with regards to locating a new engine would be really appreciated. I am calling SBT on Monday but do not see many options on the internet unless I am missing something Thanks in advance for any feedback That royally blows. You didn't have the YES warranty did you? Mine as well runs out in August. No warranty I will need to deal with this one myself The frustrating part is that there are not many replacement engine options on the market.
Sorry to hear about your troubles. One option might be to find a used wave runner and swap engines. Hopefully you can get it up and running soon. CA at this time of year. Sorry to hear about your troubles, good luck. Posted: Mon Jun 11, am.
Oh man. That shot down the cylinder bore makes me want to throw up. Keeping my fingers crossed that you are able to find a solution soon Heavy sigh here Any idea what caused all of this? You mentioned sucking a valve and then running the boat again when all was goodOrders placed during the weekends or the following holidays will ship the next business day.
Learn more about Dennis Kirk. We're always looking to improve your shopping experience. If you have experienced a problem with our website, please describe the issue in as much detail as possible so our team can explore it further. Details Shipping Cutoff Times. Click here for more details. Search Within. View Cart Checkout. My Garage. Saved Rides Manage Rides. Add a new ride. Harley Categories. Find Parts Fast. Select Year. Select Make. Select Model. Harley Parts back.
Harley Accessories back. Tire Finder. Aspect Ratio. Rim Diameter. Tire Sizes Explained. Tire Width.All Rights Reserved. Select a Make -- Previous models The Watercraft Superstore offers a complete line of Yamaha engine parts. The PWC pistons for the two stroke engines are made of high-silicone content aluminum just like the OE watercraft pistons.
Yamaha top end rebuild kits offered by the Watercraft Superstore include all of the parts necessary to rebuild the top end of your watercraft. Yamaha top end rebuild kits include pistonsrings and gaskets. We also sell Yamaha gaskets These gaskets are made to be OE compatible and are non-asbestos. The head o-rings are made of Viton to protect from high heat.
We sell gaskets in user friendly kits like complete gaskets kitsengine install kitsexhaust kits and intake kits. The Watercraft Superstore also sells a complete line of four stroke jet ski engine parts including valves, springs, camshafts, rods and bearings. Jet ski motor mounts are available for all of the major brands of watercraft.
Yamaha sleeves are a specialty of the Watercraft Superstore. The sleeves are manufactured using centrifugal casting technology and a proprietary alloy. If you are doing a Yamaha top end, complete rebuild, or just fixing that one cylinder, our cylinder sleeves will help you get the job done quickly and efficiently. These cylinder sleeves are designed to repair broken or worn out sleeves and get your engine back to factory specifications.
All Sleeves need to be machined to the finished size after installation. We also sell oil extractors and other oil system parts like four stroke oil pump rebuild kits. Yamaha oil pump rebuild kits include new gears, gaskets, o-rings and other seals. The Watercraft Superstore sells Yamaha service manuals to help you get the job done right the first time.
The Watercraft Superstore specializes in carburetor rebuild kits. The PWC carb kits include all the necessary parts to rebuild your jet ski carburetor.All Rights Reserved. Select a Make -- Previous models View: 40 80 All.
The following tips are useful when rebuilding your jetski top end using a rebuild kit from the Watercraft Superstore. Before you disassemble your jet ski engine to rebuild your top end, power-wash the engine and the rest of the watercraft.
That will reduce the risk of dirt and debris falling into the engine. Once you remove the cylinders, stuff a clean rag down into the crankcases. The cylinder and head of the jet ski engine use alignment pins to hold them straight in position from the crankcases on up. The pins make it difficult to remove the pwc cylinder from the cases and the pwc head from the cylinder. Sometimes the steel alignment pins corrode into the aluminum engine components.
Try spraying penetrating-oil down the mounting studs before attempting to remove the cylinder and head.
Never use a flat-blade screwdriver, chisel, or metal hammer to remove the cylinder. Instead use this technique; buy a lead-shot plastic mallet, swing it at a degree angle upwards against the sides of the cylinder.
Alternate from left to right, hitting the sides of the cylinder to separate it from the cases evenly. Clean the steel alignment pins with steel wool and penetrating-oil. Examine the pins closely. If they are deformed in shape, they won't allow the engine parts to bolt together tightly.
This can cause a dangerous air leak or a coolant leak. Never re-use old gaskets when doing a top end rebuild of your jet ski. Remove them with a razor blade or gasket scraper. Don't use a drill-driven steel wool type pad to remove old gaskets because they can remove aluminum from the cylinder and head. That will cause a gasket to leak. Always check the ring end gap on a new ring by placing it in the cylinder between the head gasket surface and the exhaust port.
The specified gap can be found in the SBT piston installation guide contained in the kit. Always install the circlips with the opening facing straight up or down, that way inertia will hold it tight into the clip groove. Place one clip in the groove before installing the piston on the connecting rod.Remember Me?
Sea Doo. Jet Boat. Blacktip Jetsports. Riding Gear. Trailer Parts. Gift Certificates. Jet Ski Lanyards. Jet Ski Traction Mats. PWC Seat Covers. PWC Covers. PWC Dry Bags. Jet Ski Boarding Steps. Last Jump to page: Results 1 to 10 of Thread: VX Rebuild Cost.
Known issues for boat years 2003-2009 with MR1 engines
Thread Tools Show Printable Version. Yamaha would not cover the warranty because it was not dealer winterized???? Do these numbers make any sense? Thanks guys, I love this forum. Re: VX Rebuild Cost what is wrong on this engine to blow at 88 hours???
Re: VX Rebuild Cost The dealer does not have to winterize for the warranty to remain valid but if it wasn't properly winterized and it blew then you are SOL.
Why did the engine blow? There has to be much more to this story. Last edited by Hurricane; at PM. Originally Posted by PrickofMisery. Sprinkle it with as much powdered sugar and gold leaf that you wantMR1 Engine reliability. Posted: Fri Sep 17, am. I am considering the purchase of a yamaha jet boat budget restrainsts will keep me in the pre-owned section, looking at a SX or SR I have a few questions regarding the MR1 engines. I realize that Yamaha is well known for their reliability but if I have my facts straight, it sounds as though these engines will spin at 7KK rpm at cruising speeds.
I am looking for feedback on the long-term reliability of these engines.
Yamaha Jet Boaters
If they are properly maintained is there a general "hour" life to the MR1s? At what point do they require rebuilding? I am always amazed at the number of PWCs that need their engines rebuilt within hours of use maybe this is a 2 cycle vs 4 stroke issue. My next question is in regards to degradation due to saltwater. Obviously these boats are designed for saltwater use, however should I avoid considering the purchase of a boat that is typically docked in saltwater for the summer months?
Good maintenance practices would be to flush the engine after use, but I don't feel comfortable that a docked boat is going to have access to a fresh water cleanout after each use. Finally, can you, or does anyone ever run their boat using only one of the engines, or does that put an undo strain on the boat or motor in any way?
Thanks in advance for any responses. Post subject: Re: MR1 Engine reliability. And avoid like the plague any that look like they have been docked Launched and left tied up for weeks or months in salt water. That's a lot of years range you mention so I would look at actual engine hours. And with proper maintenance these engines are just as reliable and long lasting as any marine 4 stroke.
Coming from a sterndrive you may miss a true neutral, and slow speed handling will be a new experience. Hope that helps and Welcome Aboard. Salt water not an issue if boat cleaning properly. My dad keeps his boat on a lift in salt water TONS of boats in the area in salt-no more issues than fresh water. Comes to how someone cares for boat. SO if cared for Welcome aboard, Dave!
Your observations are correct, hours is about the time a 2-stroke needs a top overhaul.Yamaha VX110 Engine Rebuild Part 1
The Yamaha 4-strokes last a lot longer, we've heard of a couple with over hours. You do NOT want to leave one of these in the water, especially salt water.
Crud will build up in the jet pump quickly and cause a bunch of problems. The engines and pumps must be thoroughly flushed after each salt water outing. As stated, running fast on one engine isn't recommended. However, the instances of damage because of it are very few and far between.
It is done when navigating through water with a lot of trash, weeds, etc. Huge difference between boats moored in salt water and those taken out and flushed. I have been looking at boats both fresh water and salt for the past six months.Our Engine Upgrade Kit delivers bulletproof reliability to the Yamaha 1.
When you're pushing it to the limit and looking for maximum dependability, our Engine Internals Upgrade Kit is a must.
Engine Parts for Yamaha
More uniform clamping force on head gasket helps prevent blown head gaskets and ensures optium engine sealing. Developed to withstand the severe heat and pressure generated by high-boost and high horsepower applications. Durable three layer stainless construction is Viton coated and embossed to resist corrosion, improve sealing and promote event torque loading.
Titanium valve retainers and heavy-duty valve springs increase reliability of modified engine by recucing the possibility of valve float at high RPM.
To ease installation of Valve Train Upgrade Kit we offer a unique Valve Compression Tool that allows installation without removal of cylinder head saving you time and money.
More uniform clamping force on crankshaft helps prevent crankcase deflection under heavy load. Contact our parts representatives for more information.
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