flyingbrick Posted August 30, 2019 Author Share Posted August 30, 2019 O yeah great idea let's try get the mb to cold kiwi. Nek minnit. 4 1 6 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted September 15, 2019 Author Share Posted September 15, 2019 About a 7mm home in the piston and quite a few rough spots and pitting over the piston. Last time i had the head off it looked great in there, dumb. Thinking now of fitting a compact single cylinder 200(ish) water cooled engine. These are physically tiny as no cooling fins so could be fitted without looking silly as fuck... And iv got a better chance of making it to cold kiwi next year if its not full throttle the whole time 2 4 Quote Link to comment Share on other sites More sharing options...
SOHC Posted September 16, 2019 Share Posted September 16, 2019 Most 2 strokes will do this if you keep them wide open long enough 2 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted September 16, 2019 Author Share Posted September 16, 2019 53 minutes ago, SOHC said: Most 2 strokes will do this if you keep them wide open long enough Iv had this thing wide open for quite large rides, this was only a few minutes in. Bought a wr200 motor pick up tomorrow. Will have to hassle @64valiant for use of his shop 3 Quote Link to comment Share on other sites More sharing options...
SOHC Posted September 16, 2019 Share Posted September 16, 2019 1 hour ago, flyingbrick said: Iv had this thing wide open for quite large rides, this was only a few minutes in. Bought a wr200 motor pick up tomorrow. Will have to hassle @64valiant for use of his shop you will find weather and altitude will mean life and death, my KX would ping like hell some days and I would have to change the jets. Wr200 should be fun 2 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted September 16, 2019 Author Share Posted September 16, 2019 Could it have been the cold air? Quote Link to comment Share on other sites More sharing options...
Truenotch Posted September 17, 2019 Share Posted September 17, 2019 How long had you been running that filter for? The cold air mixed with not running a factory air box would result in a very very lean mixture. By the way, I reckon you should keep this bike ~100cc. 4 Quote Link to comment Share on other sites More sharing options...
GuyWithAviators Posted September 17, 2019 Share Posted September 17, 2019 4 minutes ago, Truenotch said: By the way, I reckon you should keep this bike ~100cc. I agree. Otherwise it’s really pushing its legality, physical engine size and performance wise. Hate to be the one to ruin 01 class rules. However wr200 powered would be great for off-road! 2 Quote Link to comment Share on other sites More sharing options...
Mop Head Posted September 17, 2019 Share Posted September 17, 2019 Looks like the engine is already bought and said for, but I agree with the others. Well at least around here it wouldn’t take long to get picked on by the thin blue line. 2 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted September 17, 2019 Author Share Posted September 17, 2019 Well, If this is the most illegal thing that I do during this lifetime- then i'm doing alright. Once the shed is finished and the house is sold- I'm allowed a bigger bike, but i'd still LOVE to get this down to the cold kiwi next year. I feel rather defeated right now. @Truenotch had that filter on there since the start. When i got the bike it had no air filter at all. I did keep part of the plastic hosing to the filter which looked to be the biggest restriction but obviously failed. I'm going with it being on the edge of safety for the past year and the cold air was just enough to push it over the edge. Do other 2t guys use anything special to warn of impending doom? Knock sensors even? EGT seems to require a huge amount of experience to read reliably. Quote Link to comment Share on other sites More sharing options...
Truenotch Posted September 17, 2019 Share Posted September 17, 2019 The best thing to use is a head temperature sensor. @peteretep has one on his street magic that works quite well. The thermocouple usually has a little terminal that goes under one of your head bolts and gives you an idea that your motor is running hot. Also taking the time to get a safe tune beforehand makes all the difference. You want it a step or too below the point where it's just too rich. 4 Quote Link to comment Share on other sites More sharing options...
SOHC Posted September 17, 2019 Share Posted September 17, 2019 11 minutes ago, flyingbrick said: Do other 2t guys use anything special to warn of impending doom? We buy 4 strokes, Most cops wont know if you have a 200cc engine, most cops dont even know the law, 2 Quote Link to comment Share on other sites More sharing options...
johnnyfive Posted September 17, 2019 Share Posted September 17, 2019 You may have trouble at WOF time, if that's something you do. And yeah most people kill 2 strokes, a couple times at least, then either get smart and go to 4t, or get smarter and don't kill them (quite as much) 2 Quote Link to comment Share on other sites More sharing options...
HighLUX Posted September 17, 2019 Share Posted September 17, 2019 Im guilty of cooking 2ts 5 big block kits here before realising I should of spent that all at once on a rm85 swap and be done with it 2 2 Quote Link to comment Share on other sites More sharing options...
Chris.QCR Posted September 17, 2019 Share Posted September 17, 2019 I think your luggage setup would have contributed to the motors early death. I know my yb100 motor struggled with the extra drag out the side so just out it all into a big tramping pack and it was sweet 3 Quote Link to comment Share on other sites More sharing options...
Mop Head Posted September 17, 2019 Share Posted September 17, 2019 For me it's 'less bad' if people have a bike license and ride a big cc swapped Moped. Then you're only risking riding a bike with the 'wrong engine' as opposed to riding on the wrong license class (even though the bike is cheap moped reg). Keen to see how this goes though! Will be pretty interesting to see it finished for sure. WR200's are fun even in stock form. Forgive my uber safety old man speeches btw. We lose a customer or two each year to bike accidents and having a solid crash a few east capes back + doing a ride forever course made me realise I knew way less than I had thought. Bigger cc and stock brakes make for some butt puckering moments. Nang hard. Do a skid etc. 2 1 Quote Link to comment Share on other sites More sharing options...
peteretep Posted September 17, 2019 Share Posted September 17, 2019 Yeah get a trailtech vapor, reliable speed, rpm and cylinder temp. I have a stage6 version too on another bike which is a good alternative. Over 200 degrees is into trouble territory, above 215 is super danger zone, hard riding on long straights should put you around 180-190 in the middle of summer https://www.amazon.com/TRAILTECH-Vapor-Computer-Kit-Motorcycle/dp/B07BYLJ927/ref=sr_1_1?keywords=trailtech+vapor+752-116&qid=1568694811&sr=8-1 https://www.pedparts.co.uk/product/702/stage6-digital-speedo-clocks-rev-counter https://www.pedparts.co.uk/product/1349/koso-temperature-sensor-adaptor-14mm-spark-plugs 2 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted September 17, 2019 Author Share Posted September 17, 2019 Thanks all. Will get into it soon, picked up motor. Same length, larger gearbox but smaller cylinder head. approx 20mm wider in gearbox. Roughly 10mm a side isn't as bad as expected. Plz keep eye open for any wr200s being wrecked as need quite a few parts 2 Quote Link to comment Share on other sites More sharing options...
xsinclairx Posted September 17, 2019 Share Posted September 17, 2019 1 hour ago, SOHC said: We buy 4 strokes, Most cops wont know if you have a 200cc engine, most cops dont even know the law, Unless you get a cop that shows an interest in bikes or is old school traffic type i'm sure most wont care. In saying that if you're being a dick i'm sure they'll find something. It'll be an exciting ride with the 200! 1 1 Quote Link to comment Share on other sites More sharing options...
tortron Posted September 17, 2019 Share Posted September 17, 2019 I'm Gona narc Will you be able to beat a gn125 now? Quote Link to comment Share on other sites More sharing options...
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