Big Tobe Posted April 7, 2010 Share Posted April 7, 2010 I was wondering if anyone could help me, The piston rings on my bike snapped and have scored the piston and cylinder, could I replace it with a bigger cc engine? Thanks. Link to comment Share on other sites More sharing options...
Guest MaD.VeZ Posted April 7, 2010 Share Posted April 7, 2010 Second item down, take a seat before clicking the link, it isn't cheap. http://www.pjme.co.u...ts_Top_End.html . I hear its also possible to fit a Lanza 230cc engine in there, but you have more chance of being hit by lightening twice than finding one. Get a rebore and a new piston like the rest of us do Welcome to the forum btw Vez Link to comment Share on other sites More sharing options...
Big Tobe Posted April 7, 2010 Author Share Posted April 7, 2010 Second item down, take a seat before clicking the link, it isn't cheap. http://www.pjme.co.u...ts_Top_End.html . I hear its also possible to fit a Lanza 230cc engine in there, but you have more chance of being hit by lightening twice than finding one. Get a rebore and a new piston like the rest of us do Welcome to the forum btw Vez Link to comment Share on other sites More sharing options...
Big Tobe Posted April 7, 2010 Author Share Posted April 7, 2010 Hi vez, thanks for your quick reply, the only problem is that it has already been bored, also the scratch is fairly deep on the inside of the cylinder. Is there anything else I can do apart from buying a new one? Link to comment Share on other sites More sharing options...
Guest MaD.VeZ Posted April 7, 2010 Share Posted April 7, 2010 Hi vez, thanks for your quick reply, the only problem is that it has already been bored, also the scratch is fairly deep on the inside of the cylinder. Is there anything else I can do apart from buying a new one? The link is for a bigbore kit, you can get a second hand barrel for around £85+/- on ebay. Or a reconditioned barrel, head and piston kit for £185 There is also the relining route but i hear that is expensive and not worth it. Even with a deep gouge in the bore all may not be lost, how many times has it been rebored and to what diameter? Vez Link to comment Share on other sites More sharing options...
Big Tobe Posted April 8, 2010 Author Share Posted April 8, 2010 Sorry about the late reply The current bore is 57mm and the scratch is about 2-3mm deep, the previous owner told me that he had bored it from a standard 56mm Is there any chance I could still rebore it? Thanks. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted April 8, 2010 Moderator Share Posted April 8, 2010 2 - 3mm deep! You sure Tobe? dont say its that deep unless you are certain. That sounds awfully deep, more than the average score. Link to comment Share on other sites More sharing options...
Guest MaD.VeZ Posted April 8, 2010 Share Posted April 8, 2010 That does sound deep! I have heard you can go quite far when reboring a DTR but i have never been past 56.9mm myself. (there was talk of a 2.5mm overbore(>58.5mm iirc) but it may just be speculation) Here is a link to a 57.65mm piston for the DTR, there are larger available, but i wouldn't be comfortable if it was me. http://cgi.ebay.co.u...=item23064caf06 What I would do, is to take the barrel to a local bike shop/breakers/engineer and ask them for there opinion. You could post pictures on here, but it isn't easy to tell from pics. Where abouts are you? maybe someone on here can suggest a good shop to try. Vez Link to comment Share on other sites More sharing options...
Big Tobe Posted April 8, 2010 Author Share Posted April 8, 2010 Perhaps your right, I think I'll take your advice and get a new cylinder, second hand most likely. Thanks for your help though Tobe Link to comment Share on other sites More sharing options...
Recommended Posts