alan Posted February 28, 2009 Report Share Posted February 28, 2009 (edited) entered a national event in 4 weeks time but last time out my bike was pinking a bit.Reading up on the internet it seems like one of the causes could be build up of carbon. I also read about a tuner in the states that gas flows heads using a sandblaster. So i thought i could kill two birds with one stone (epecially as it is so tricky to get the push rods back in). This afternoon I took the air filter out and the silencer off, fired the bike up, held it at about 3000 rpm and throw hand fulls of sand into the airbox. most of the sand seems to have come out so I put it all back together again. Problem is now that it runs really rough. I reckon it so well gas flowed I need to adjust the carb and timing to suit. I was thinking about going up 20 on the main jet and advancing the ignition by about 5 degrees Does this seem about right ? don't want to risk damaging my freshly tuned motor. Edited February 28, 2009 by alan Quote Link to comment Share on other sites More sharing options...
b40rt Posted February 28, 2009 Report Share Posted February 28, 2009 Is it April the 1st already ? Quote Link to comment Share on other sites More sharing options...
croisy06 Posted February 28, 2009 Report Share Posted February 28, 2009 you been serious about the sand into the air box ... oh deeeer if you are Quote Link to comment Share on other sites More sharing options...
ham2 Posted February 28, 2009 Report Share Posted February 28, 2009 ..but it's so well written, I think he's pulling our...you know... Quote Link to comment Share on other sites More sharing options...
paul w Posted February 28, 2009 Report Share Posted February 28, 2009 So i thought i could kill two birds with one stone you missed a trick there, you could have killed three birds with that stone. if you had positioned your slghtly rusty cast iron garden furniture just behind the exhaust it would have nicely prepared for a coat of hammerite.............you didnt think it through really did you? Quote Link to comment Share on other sites More sharing options...
shercoman2k8 Posted February 28, 2009 Report Share Posted February 28, 2009 Please, no, your taking the p*** right? Quote Link to comment Share on other sites More sharing options...
pat slinn Posted February 28, 2009 Report Share Posted February 28, 2009 Was it "silica" sand or builders sand ?. Quote Link to comment Share on other sites More sharing options...
charlie prescott Posted March 1, 2009 Report Share Posted March 1, 2009 Hi Guy's, I tried that a while back, but you need an old Ariel that's running a bit retarded and if you get her nice and hot and fire in the handfulls of silica sand straight into the bellmouth you get a loveley glass vase forming out of the end of the tail pipe, and if you inturupt the flow ,by posititoning your hand momentaraly over the carb she will back fire, and shoot the glass into the air and it comes back to the ground has marbles. PS, you must have an Ariel HT with the factory original exhaust for this though, I have tried sand blasting my best Levi's with this method as well, it does tend to scorch them though. Are well!!! Regard's Charlie. Quote Link to comment Share on other sites More sharing options...
Andy Posted March 1, 2009 Report Share Posted March 1, 2009 This is just a slighly changed version of a spoof topic that did the rounds on the car forums last year. Quote Link to comment Share on other sites More sharing options...
vinnied Posted March 2, 2009 Report Share Posted March 2, 2009 (edited) I wonder will somebody actually try this, God help them, dangerous article There is all sorts out there Vinnie Edited March 2, 2009 by Vinnied Quote Link to comment Share on other sites More sharing options...
alan Posted March 2, 2009 Author Report Share Posted March 2, 2009 Thanks to those that are taking this seriously, (this a 3k serco motor), I think you are right that I didnt think it through properly. when I took the plug out the end was coated with glass, hence the poor running? Peeping through the plug hole I can see the top of the piston is also coated. So, it seems an added bonus or two. Higher compression and a thermal insulator on the piston. I am now thinking I need even more ignition advance. The only downside I can think of is the fragility of glass, don't want to undo my good work bouncing off a rock step. I beleive that glass is toughned by rapid cooling, so I was thinking of firing the bike up, killing the motor, whipping the plug out and then sticking the garden hose in the plug hole. Any one got any experience of this... Quote Link to comment Share on other sites More sharing options...
yamahaty250xox Posted March 2, 2009 Report Share Posted March 2, 2009 No offence alan, (and i know nothing on this topic!) but it sounds like a brilliant way of ruining your motor. Quote Link to comment Share on other sites More sharing options...
woody Posted March 2, 2009 Report Share Posted March 2, 2009 sticking the garden hose in the plug hole.Any one got any experience of this... I love this, really funny thread Answers to your above question of the garden hose may depend on various readers ideas of 'plug hole' of course.... Quote Link to comment Share on other sites More sharing options...
charlie prescott Posted March 2, 2009 Report Share Posted March 2, 2009 HI Guy's, One of the plus sides to using the Silica sand is that it coats the inside of the exaust system with glass and the gases escape cleaner and the real bonus is that it disapates the heat from the exhuast, so no more burnt legs etc, My opinion anyway. Bug*** it might work!!!!! Regard's Charlie Quote Link to comment Share on other sites More sharing options...
pat slinn Posted March 2, 2009 Report Share Posted March 2, 2009 My original theory for using silica sand was that it is so fine that some of it may get sucked up the valve guides, and thus "tune" the rocker gear. Perhaps "Glasses" guide may have a angle on theories !! Quote Link to comment Share on other sites More sharing options...
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