betarich Posted December 1, 2014 Report Share Posted December 1, 2014 Betarich, That is the worst I have ever heard. Quite obviously a victim of the silly trend in thinking that a 2 stroke runs so much better without oil. Have a nice day. Larry Hi larry to be honest im not 100% sure what had caused it, when i stripped it it had had water in the crank case at some point, but the idiot i bought the bike from had tried to cover it all up by filling the crank case with old engine oil, and filed the barrel and piston smoth where it had siezed and basically tried shafting me. believe it or not that sounded sweet when i went to view the bike it just smoked a bit. it wasnt until i rode it for the first time it burnt all the old oil off and sounded like it was going to throw a rod any monute. shes all healthy now though had a complete rebuild with new everything. well worth the hassle best trials bike ive owned. 1 Quote Link to comment Share on other sites More sharing options...
lbhbul Posted December 1, 2014 Report Share Posted December 1, 2014 Glad you have it up & running now, too bad how you cant trust people now, wish you all the best, let it smoke a bit & pay no attention to those who advocate light on oil. Larry Quote Link to comment Share on other sites More sharing options...
lewis315r Posted December 4, 2014 Report Share Posted December 4, 2014 Right, just been on the phone to Sandifords who sell the piston kit, and looks like the only option is an "A" piston and putting any larger piston in the barell is a big no no. Glad I rang because I was going to buy a "B" piston. Will keep this updated and hopefully an after video next week with a nice quiet engine! Did you get sorted mate? I've just got mine back together and its sounds like new! The letter is stamped on the out side of the barrel on the intake side On putting it back together there wasn't any problems apart from putting the head on backwards haha but well impressed with the power gain! Quote Link to comment Share on other sites More sharing options...
331sam331 Posted December 5, 2014 Author Report Share Posted December 5, 2014 Did you get sorted mate? I've just got mine back together and its sounds like new! The letter is stamped on the out side of the barrel on the intake side On putting it back together there wasn't any problems apart from putting the head on backwards haha but well impressed with the power gain! Yea the piston kit came today, just in time for fitting it tomorrow! The barrel letter was A. I had no trouble finding that. There was just a bit of confusion, as a lot of threads on forums were saying that you could put the B piston in, which is slightly larger, to compensate for the wear in the bore. After ringing up though they said that it is really not advisable, I imagine due to the chance of smashing rings and seizing I'll update again tomorrow, hopefully with pictures and a nice video! Glad yours went together OK and is sounding smooth Quote Link to comment Share on other sites More sharing options...
331sam331 Posted December 7, 2014 Author Report Share Posted December 7, 2014 So I got everything back together relatively smoothly, and she fired up on the second kick! I'll be honest I am a little disappointed that there is still something there. The little end clacking has gone, but I think there is still some piston slap. I feel a bit miffed that I could have maybe gotten away with putting the B piston in, but hey, it's got serious compression and as long as I can have some fun that is all that really matters Have a listen and see what you think BEFORE NEW PISTON AFTER Please excuse the purple, the chip/sensor in my phone is knackered. Quote Link to comment Share on other sites More sharing options...
331sam331 Posted December 8, 2014 Author Report Share Posted December 8, 2014 x Have a listen to the second vid if you get chance dude, I wanna see what you think compared to yours! haha Quote Link to comment Share on other sites More sharing options...
331sam331 Posted December 11, 2014 Author Report Share Posted December 11, 2014 So I am starting to thing it might be bottom end rumble or bearings or something. My other theory is the fuel octane but not sure as it is running super unleaded at around 98 octane. Maybe worth a shot with octane booster? Quote Link to comment Share on other sites More sharing options...
lewis315r Posted December 16, 2014 Report Share Posted December 16, 2014 So I am starting to thing it might be bottom end rumble or bearings or something. My other theory is the fuel octane but not sure as it is running super unleaded at around 98 octane. Maybe worth a shot with octane booster? In your case it may of been worth getting the barrel checked over, as from the video the knocking is pretty loud! Much better than before though really depends on how long your looking to keep the bike and how much you want to put into it! My bike ran well after the top end was done! loads of power until the coil decided to pack up and god knows what else so now that's been replaced its back fighting fit! Got to say its amazing the difference! keep us posted on what happens! Quote Link to comment Share on other sites More sharing options...
lineaway Posted December 17, 2014 Report Share Posted December 17, 2014 Pull the flywheel cover off. Give the flywheel a good tug. Is there any movement up and down. Quote Link to comment Share on other sites More sharing options...
331sam331 Posted December 17, 2014 Author Report Share Posted December 17, 2014 In your case it may of been worth getting the barrel checked over, as from the video the knocking is pretty loud! Much better than before though really depends on how long your looking to keep the bike and how much you want to put into it! My bike ran well after the top end was done! loads of power until the coil decided to pack up and god knows what else so now that's been replaced its back fighting fit! Got to say its amazing the difference! keep us posted on what happens! Yes I think you are right. It is definitely something I will keep in mind for the future as I like the bike a lot. I took it out to properly run it in over the weekend, and it pulls like and absolute train, definitely no problem in the power department. One thing that has completely gone is the horrendous tapping at higher revs (little end I imagine). The only thing that remains is the idle and slightly off idle knocking. Yikes, I really hope my coil doesn't go anytime soon, just looked at the price Pull the flywheel cover off. Give the flywheel a good tug. Is there any movement up and down. Yea, might have a gander. I should really have a look inside there anyway just to check it over. Cheers guys, much appreciated Quote Link to comment Share on other sites More sharing options...
b_42woody Posted August 6, 2015 Report Share Posted August 6, 2015 Could a lot of that knocking/rattle noise be the lash between the primary gear and the clutch basket gear? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.