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Everything Dirt Bike
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What type piston do u run??
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<blockquote data-quote="2smoke" data-source="post: 164120" data-attributes="member: 563"><p>I would like to say that most of us are just recreational riders. Yes we do have some folks in here that actually race. And race hard. So this is for the benefit of the recreational riders, based off of my personal experience. Does your manual say to replace the rings and or rings and piston at........ Oh lets just say its every 10hrs of racing. Thats some serious abuse especially at race pace. So yes it makes sense to replace those items at that type in interval.</p><p></p><p>Now for the recreational rider. Sure we ride hard, or at least we think we ride hard. But do we really need to replace our piston rings and pistons at what the manual says we should? If I did that I wouldnt be able to afford to ride. Depending on what manufacture of piston and rings you buy, to include a complete gasket and seal kit. Reasonably you can expect to spend between $100 and $200 US dollars for everything you need. Now I try to ride as often as possible. But typically I ride about twice a month for as long as I have fuel for. Which is about 3 hrs worth of riding time. Sometimes I get 4 rides a month just depends. So lets just go with 3 3hr rides per month. And I am able to ride year round mind you. So thats roughly 9hrs of riding a month at a pretty reasonable pace. X's 12 months = 108hrs of riding. That seems like a lot of time and it would be if we all REALLY road as hard as professional racers or even amateur racers. So lets just cut that time in half because thats probably more realistic riding time for me anyways. 54hrs of riding time. Still seems like a lot. But truthfully its not. I like to do a compression test when I install an new piston and before I replace a piston. Now I always replace both piston and rings though I could probably get away with just the rings. Thats just me. Anyways I only have about a 10 PSI difference between new and replacement time. To some that may be alot. But when I was really riding a lot I easily got 100 hrs of ride time a year. Yes that piston and rings needed to be replaced I think the PSI was like high to mid 70s. And the bike performed like it too with 100 hrs of time on it. And the cylinders look fine. Most of the time I just clean them really well. Sometimes I will run a very light grit hone just to bring the cross hatching back.</p><p></p><p>Now if you remember back in the first paragraph 10rs of ride time per manufacturers spec. Youd be replacing a top end per month. At $100-$200 a shot. I know I cant afford that and Im going to assume most that read this cant or wont either. So realistically yes you can get away with a new top end per year. Providing you keep your bike jetted correctly run the correct oil ratio and quality oils. These are my results. Yours may differ.</p><p></p><p>Guys with 4T bikes need not comment as 4T bikes can go a very long time between piston and ring swaps. My Brothers 06 KX450 that he bought new out of the crate is still on its original piston and rings. Still has plenty O poop left in it. And he rides way more than I do and is way faster than I am. But he also takes very good care of his machine.</p></blockquote><p></p>
[QUOTE="2smoke, post: 164120, member: 563"] I would like to say that most of us are just recreational riders. Yes we do have some folks in here that actually race. And race hard. So this is for the benefit of the recreational riders, based off of my personal experience. Does your manual say to replace the rings and or rings and piston at........ Oh lets just say its every 10hrs of racing. Thats some serious abuse especially at race pace. So yes it makes sense to replace those items at that type in interval. Now for the recreational rider. Sure we ride hard, or at least we think we ride hard. But do we really need to replace our piston rings and pistons at what the manual says we should? If I did that I wouldnt be able to afford to ride. Depending on what manufacture of piston and rings you buy, to include a complete gasket and seal kit. Reasonably you can expect to spend between $100 and $200 US dollars for everything you need. Now I try to ride as often as possible. But typically I ride about twice a month for as long as I have fuel for. Which is about 3 hrs worth of riding time. Sometimes I get 4 rides a month just depends. So lets just go with 3 3hr rides per month. And I am able to ride year round mind you. So thats roughly 9hrs of riding a month at a pretty reasonable pace. X's 12 months = 108hrs of riding. That seems like a lot of time and it would be if we all REALLY road as hard as professional racers or even amateur racers. So lets just cut that time in half because thats probably more realistic riding time for me anyways. 54hrs of riding time. Still seems like a lot. But truthfully its not. I like to do a compression test when I install an new piston and before I replace a piston. Now I always replace both piston and rings though I could probably get away with just the rings. Thats just me. Anyways I only have about a 10 PSI difference between new and replacement time. To some that may be alot. But when I was really riding a lot I easily got 100 hrs of ride time a year. Yes that piston and rings needed to be replaced I think the PSI was like high to mid 70s. And the bike performed like it too with 100 hrs of time on it. And the cylinders look fine. Most of the time I just clean them really well. Sometimes I will run a very light grit hone just to bring the cross hatching back. Now if you remember back in the first paragraph 10rs of ride time per manufacturers spec. Youd be replacing a top end per month. At $100-$200 a shot. I know I cant afford that and Im going to assume most that read this cant or wont either. So realistically yes you can get away with a new top end per year. Providing you keep your bike jetted correctly run the correct oil ratio and quality oils. These are my results. Yours may differ. Guys with 4T bikes need not comment as 4T bikes can go a very long time between piston and ring swaps. My Brothers 06 KX450 that he bought new out of the crate is still on its original piston and rings. Still has plenty O poop left in it. And he rides way more than I do and is way faster than I am. But he also takes very good care of his machine. [/QUOTE]
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What type piston do u run??
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