- Location
- New York
But snowmobiles don’t have water and I think that’s going to be more of the issue
EFI Yamaha 701 SuperJet 62T Electronic Fuel Injection and Ignition Kit
- Thread starter tyler breitweser
- Start date
- Location
- Stouffville, Ontario
Its a shame the OP hasn't been on in almost a year. Curious setup. Would love to hear some real world feedback.
Quinc
Buy a Superjet
- Location
- California
Run pfp or another dry pipe?
- Location
- New York
Maybe? Saw a video of it running on Facebook and you don’t brap it. The rider was just holding the throttle at a constant rpm. Don’t know if that is how it has to be ridden but looked like it lost that on/off brapping.
- Location
- Stouffville, Ontario
Someone find the OP and get him back here. Free bump.
- Location
- Windsor ON
I believe most sleds run EGT sensors to infer lambda (air fuel ratio) rather than an actual UEGO it looks to use in this kit. Love the idea but a UEGO likely wont live with oil, might be best to re-release the kit with an EGT.
smokeysevin
one man with a couch
- Location
- Houston
In my (rather limited) testing on marine 4 strokes it is hard to keep an o2 sensor alive unless you run WOT and then shut it down and pull the sensor. Even letting it sit and restarting causes loads of water vapor to form in the exhaust which kills the sensor when the heater kicks back on.
I don't doubt it could be improved by playing with the position etc but as is, my recommendation would be to find a sensor with a "lifetime replacement warranty" from the parts store because you are going to need it if you leave it in and go ride.
Sean
You wouldn't use an O2 sensor in this application. A thermocouple may not provide much feedback without a lot of full throttle use. It would most likely use a fixed map with temp and possibly a barometer for atmospheric adjustment. .Dont get too excited about EFI on our type of skis. It adds weight, complexity, and at best works marginally better than carbs. The outboard guys have made it work for them but they have hefty charging systems and car batteries to run everything. Plus they have to keep six cylinders happy at the edge of meltdown.
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I don't really want efi, I just want carbs that are convenient to adjust. Can you imagine having a set of carbs that somehow mounted the jets on top, like as easy to get at as a spark plug, and put the screws with a nice big knob with graduations so you can just grab it and turn it 1/8 turn without cramming your hand into a tight place with sharp edges? Even better a flex connector and a knob that you can reach while riding, don't even stop.
Hell, even just put the damn bolts that hold the carb on so that they're in an easy to get to place and I'll unbolt the damn things. The SBN-I bodies kinda do that at least, but I've never used them for anything. Current status quo is basically designed to maximize the possibility of dropping a non-magnetic bolt into oblivion never to be found again until it is stuck in your scupper.
Quinc
Buy a Superjet
- Location
- California
Mount some lectrons on your ski.
Lectron Adjustable Power Jet Carburetor Kit | Parts & Accessories | Rocky Mountain ATV/MC
Shop for Fuel and Air Intake Systems, like Lectron Adjustable Power Jet Carburetor Kit at Rocky Mountain ATV/MC. We have the best prices on dirt bike, atv and motorcycle parts, apparel and accessories and offer excellent customer service.
Specs:
- Metering rod design eliminates traditional jets
- Jetless design auto-adjusts to wide variety of conditions
- Minimal impact from elevation, humidity, and temperature change
- Direct fitment in place of stock carb
- Tapered bore
- May help improve fuel economy
- Smoother power delivery than stock
- Increased performance
- Clear float bowl for easy monitoring
- Location
- Long Island, NY
Someone needs to make some Lectron Carbs for the skis!.
I've personally used them on multiple different dirt bikes and they were always awesome. They all always felt super well jetted and never running lean.
Its a metering rod style carb or something like that.
I've personally used them on multiple different dirt bikes and they were always awesome. They all always felt super well jetted and never running lean.
Its a metering rod style carb or something like that.
- Location
- Long Island, NY
A simple EFI setup like on a moden 4-stroke dirt bike would be plenty. Most dont use 02 sensors at all and if they have one its just for emissions..
But it relies on the TPS sensor, IAT, MAP, ECT, & Fuel pressure sensor for safety plus an EGT would be nice as well for a safety.
That can all be done with a very small compact waterproof ECU.
You still need the throttle bodies and fuel rail/injector setup and a fuel pump in the gas tank. A FPR and a good feed & return line to the gas tank.
But it relies on the TPS sensor, IAT, MAP, ECT, & Fuel pressure sensor for safety plus an EGT would be nice as well for a safety.
That can all be done with a very small compact waterproof ECU.
You still need the throttle bodies and fuel rail/injector setup and a fuel pump in the gas tank. A FPR and a good feed & return line to the gas tank.
Quinc
Buy a Superjet
- Location
- California
Hit up lectron and see if they will help you set some up for your ski.
- Location
- Long Island, NY
I wish! Im sure it would be expensive to have them make the first set for me. Plus my ski is stock with some bolt-on's and a pipe. So nothing really special on my SJ. Plus its apart right now for some work im doing to it and have been busy.
I just wish there was at least an option from them available. I know the jet-ski carbs are different because they can't have a conventional float because of not being able to have an open overflow line into the Hull.