was doing around 70mph on my way home today.... and then back wheel locked up almost flung me off bike till i rememberd to grab clutch and regain control.. came to a hault to an engine sieze, electrics have faild on bike (i never realised only rode in daylight so never used lights) and meaning my oil light wasnt working either.. and because that wasnt "on" i thought i had 2stoke oil in the tank, turns out i didnt.. so this week im getting the athena kit and ill take pix etc once its here and keep ya updated on my progress to rebuilding my beloved wife.
Aww ouch , good luck with the rebuild m8 , u gettin the 170 kit? I'd go for a new crank aswell if I wer u m8, last thing u wanna do is destroy a 400 quid barrel n piston for the sake of another 100 odd quid lol
yeah, yeah, getting the whole bottom end done aswell to match with the Athena 170kit am gonna attempt to do all of it myself (appart from pressing in bearing ofc) but as for cracking thye case, i should be alright in doing i hope, any tips etc would be much appreciated :D
Best advice I'll give is make sure that all gasket surfaces are nice, flat and clean, and make sure you put everything back exactly where you found it!
As long as you are mechanically minded, you'll soon find doing a full rebuild including a bottom end, really isn't that hard :)
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i've got a friend who can re-bore my barrel, but dosen't know the measurments or w/e (he's never done a bike, just has equipment) does anyone know what info he needs and the diameters etc? atm i've got a 56.50 piston in and will need to size up from that, cheers
I don't know off the top of my head if these cylinders have a Nikasil bore (I presume they do, most modern 2-stroked do) but it won't just be a case of boring the cylinder out, you'll need to get it re-plated if you do, and boring the cylinder out may mess around with your port timing slightly as well... Just to make you aware of what you are taking on board here fella!
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Dt's don't have nikasil Plated barrel they have the steel inserts, boring out will be fine and won't affect porting , u will need to go to the dia of the piston u have for it BUT check in the manual for cylinder tolerances , u might have to go a fraction bigger than ur piston like 56.52 or summink like that
-- Edited by DT-R_bradders on Wednesday 23rd of March 2011 02:23:34 PM
They are sleeved? I'm a little surprised actually.. would have thought yamaha would have plated the cylinders :S
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Yea man look at the top of ur barrel n u can see it , they most likly plate the mx bikes yz's ect but not the dt , spose its for reliability and long life
Well fudge! Nikasil plated cylinders are more reliable in my experience and have an exponentially lower wear rate than sleeves, but sleeves are cool, I can deal with that :)
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