Met this lad a few day's ago near the local bike shops who was trying to figure out how to fit a new clutch cable so i fitted that and give him my number to ring me if he needed anything doing. I told him at the time his engine was sounding a bit rough and to get it looked at. So he rang me this afternoon telling me his engine made strange noises for about a mile, then the back wheel locked solid
Just been to his and pulled the head off and this is what come out :
'int that lurvly Suprisingly, there's no other damage! barrel still looks tidy with no scrapes and there's no play in the big end bearing. Piston kit, possibly a head skim and gasket set and it's all go again!
simlar happend to me i thought my crank was going so i drove home at no more than 6 k and made it the 12 miles took the barrel of and was shocked i made it home the top piston ring was jamed in the piston but it still ran fine and ticked over perfect
Also if you're offering out a free service you can come and set up my clutch properly if you want lol
If you were local i would because i'm kind like that
I'm not charging a penny for the above work or for putting it back together.He only lives about 5 miles away from me so it's not really costing me anything.
If you were local i would because i'm kind like that
I'm not charging a penny for the above work or for putting it back together.He only lives about 5 miles away from me so it's not really costing me anything.
And it's fun
Fair play bud, helping out fellow dt owners!! Nice one!
That piston is well fuked!!
-- Edited by fray on Friday 27th of August 2010 12:17:57 PM
Probably the original piston at 16k. Agree with your diagnosis, skirt failures generally indicate piston/bore excessive wear as you know. DT`s are generally bullet so again another poor maintenance issue. Somebody wasnt doing their job! These engines dont break, they get broken.
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Dont assume , check.
If there`s a doubt, there`s no doubt
Mines a ticking time bomb..33k miles, original piston/rings and still sounds/runs fine. and its not slapping bad either!! Its gonna go soon it has too but I thought that 15k miles ago!! Ill just fix it up when it does bang or it gets to the point where it really has to be done. I rarely rag my bike anyway... bombproof? my engine defies common beliefs. I bet I can get it to 40k. I will frame the piston when it dies!! I used mobil1 fully synth for 20k miles and silkolene fully synth for the rest. Thrash your DT's constantly and you will end up rebuilding every 10k miles and thats good going tbh.. Mine has been derestricted from 4k miles and a derestricted front pipe from 12k miles.
-- Edited by element on Saturday 4th of September 2010 02:38:51 AM
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04' DT125RE 32k miles and counting / 89' DT125R 3RN1 Rebuilt + Supermoto'd. "Those who risk nothing, do nothing, achieve nothing, become nothing"
hmm my dtx has covered 21.000 miles n is too the stop down bypass every day goin to work tops out at 80 with dep rear can n earthed wire , run it on silkolene synthetic never had a moments trouble, av got barrel back today so will be busy today/tomorrow .. the joys of running in eh NOT !!!
Just done one of those mot history checks on my bike and it shows the first mot as being in 2007! at which time it had 5000 miles leading to the 10,000 it has now.
Any ideas why there's no history between the 2001 - 2007 ? I assumed the dvla history check would show them all!
(unless it was off the road between those dates of course)
Dude! re-bore = over size piston , don't use the original piston or u will get the above ^^^ chunks of piston rattling about the crank case lol oh and low/no compression
ouch ! has anything fallen into the bottom end ? i would double check before putting it together again, last thing you want is it messing up the gear box :/
It wouldn't go into the gearbox housing as it's a sepearate compartment unless it mashed it's way past the oil seal but it'll most likly jus go round n round the crank case takin out chuncks of the cases bottom of the piston and prob crack the cases== bad times lol
Mines at about 16890 and its on its 2nd rebore................
mines done 18200miles but had piston and rebore at 12000miles the only trouble i have had with it is a couple of spark plug failures and a leaky head gasket as was pattern part not genuine.
Fuuuuuuuuuuuck thats a mess! I agree with some of the others, you need to drop the engine oil out of it, turn it upside down without the cylinder on and shake sh*t out of it, there is bound to be shrapnel in the bottom of the crank case.
I've come unstuck because of this before, the skirt on the piston shattered, so I took it off, new cylinder & piston, 30 miles later, something that was left in the bottom of the crank case worked its way out and screwed a brand new cylinder and piston.
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so i fitted that and give him my number to ring me if he needed anything doing.
