gotmuddy Posted May 12, 2022 Posted May 12, 2022 12 hours ago, fishinwrench said: 4000 extra RPM, no Cat. Converter, lake water for cooling, and lots of aluminum and plastic in order to keep weight down. Run your truck at 5-6k RPM on poor quality fuel for a few days and see how long before it leaves you stranded.   😎 Most people don't realize that outboard motors are very near the top of the list when it comes to "High Performance" engines. who is running their outboards at 5-6k rpm for hours at a time? The only people I can think of are offshore fishing guides, who never have fuel sitting in their tanks more than a day or two. everything in this post is purely opinion and is said to annoy you.
MrGiggles Posted May 12, 2022 Posted May 12, 2022 14 hours ago, fishinwrench said: 4000 extra RPM, no Cat. Converter, lake water for cooling, and lots of aluminum and plastic in order to keep weight down. Run your truck at 5-6k RPM on poor quality fuel for a few days and see how long before it leaves you stranded.   😎 Most people don't realize that outboard motors are very near the top of the list when it comes to "High Performance" engines. I always wondered why say a 3 cylinder 2 cycle 1000cc outboard powerhead only turns 5500 RPM and produces 60-75hp, while that same powerhead in a snowmobile will turn 8500 rpm and make 100+ horsepower. The outboard needs to do it under 100% load continuously. -Austin
fishinwrench Posted May 12, 2022 Author Posted May 12, 2022 1 hour ago, gotmuddy said: who is running their outboards at 5-6k rpm for hours at a time? I never said anyone did. I don't even drive my vehicle for hours at a time. But if I drove it at 5k+ RPM everywhere I went, there'd likely be engine problems. That was the point I was attempting to make.  dtrs5kprs 1
fishinwrench Posted May 12, 2022 Author Posted May 12, 2022 37 minutes ago, MrGiggles said: I always wondered why say a 3 cylinder 2 cycle 1000cc outboard powerhead only turns 5500 RPM and produces 60-75hp, while that same powerhead in a snowmobile will turn 8500 rpm and make 100+ horsepower. The outboard needs to do it under 100% load continuously. Probably has to do with where the HP (torque) is measured from. Outboard HP is measured at the propshaft.  There's no propshaft on a snowmobile. 😅
gotmuddy Posted May 12, 2022 Posted May 12, 2022 2 hours ago, fishinwrench said: I never said anyone did. I don't even drive my vehicle for hours at a time. But if I drove it at 5k+ RPM everywhere I went, there'd likely be engine problems. That was the point I was attempting to make.  My side by sides dont normally sit that long but occasionally they will sit for a month with regular gas in them. my wifes runs 5-7k rpm basically any time its running those motors will turn 10k rpm tho everything in this post is purely opinion and is said to annoy you.
dan hufferd Posted May 18, 2022 Posted May 18, 2022 On 5/9/2022 at 11:47 AM, tjm said: Reckon the guy got to the pump just after the tanker unloaded and he got a lot of churned up tank bottom sludge? They all pull fuel from the bottom of the tank or very near it.
dan hufferd Posted May 18, 2022 Posted May 18, 2022 On 5/12/2022 at 11:44 AM, fishinwrench said: I never said anyone did. I don't even drive my vehicle for hours at a time. But if I drove it at 5k+ RPM everywhere I went, there'd likely be engine problems. That was the point I was attempting to make.  I don't know...I think I can run my honda civic at 5k all day and, and not hurt it and it's more funner...not really.
fishinwrench Posted May 18, 2022 Author Posted May 18, 2022 3 hours ago, dan hufferd said: I don't know...I think I can run my honda civic at 5k all day and, and not hurt it and it's more funner...not really. A dude up the road here got a car similar to a Civic that he zipped around in what sounded like 1st gear all the time.  It lived less than a week.  dan hufferd 1
tjm Posted May 18, 2022 Posted May 18, 2022 5 hours ago, dan hufferd said: They all pull fuel from the bottom of the tank or very near it. I asked that because the one time I was fueling while a tanker was dumping and it took three tanks of gas and a whole can of Seafoam til my engine ran right again. I thought it was tanker related, but could have just been a crappy pump. dan hufferd 1
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