DT125R FORUM

I've had the same thing happen with my romeu pipe, i've resorted to using a piece of radiator hose and two jubilee clips and it seems to be holding. Also out of interest, what tyres are you running?

Right i've always had problems with the head gasket on my bike, i started off with a cheap one which i believe warped my head. So i skimmed the head and put an athena gasket on. This was still blowing and that engine went bang. So i bough a new engine and it still had a cheap white gasket, however it had not been blowing until recently. The old engine only had a 3bn head anyway so i took my 3mb head and skimmed it again and i'm ready to put it on now but i've got an option on a headgasket, shall i go for a genuine yamaha or try out the copper head gasket? I've always heard about the copper gaskets but never tried one myself, what are everyones opinions on them?

@MIGHTYMAN Possibly Mick Abbey?

D&D do actually seem to have some decent designs, anywhere else?

Right well i'm looking at getting some stickers for my bike now as it just looks too plain, anyone have ideas where to get them from? Most designs on ebay look pretty naff. I'm not after anything special, just like motocross stickers where there's a few colours, the numbers and a couple of sponsors stickers. Any ideas?

Hi! There's a couple of us on here!

About 75ish down a hill in 6th gear, i'll never believe anyone saying theirs goes over 90! However resistance between knobblies and sm tyres will make a difference i reckon on top speed

@Biker_123 They're mental, only blipped the throttle in second gear at like 10 mph and it just wants to shoot off! Deffinitely what i would upgrade to.

@Uber_Beluga Don't be envious! As my luck goes this will last all of 2 weeks haha

Well she's up and running again, I stripped my engine completely and split the crankcases.
http://i.imgur.com/hwhiJUC.jpg?2
http://i.imgur.com/9HYlAnw.jpg?1
Then looked on ebay and found a running engine for £250 plus delivery. So i've bought that and installed it back into the bike. It's from a later 4bl bike and i've found that you can use the later stator with the early style wiring loom and cdi. Just have to change the connectors over! Only thing i'm having trouble with is my speedo keeps turning on and off (koso clocks) So i'll just wire it to the battery. Went out for a rip with my friend who just recently purchased a ktm 125 six days and that is a complete different league in terms of bike. So much more grunt than what i am used to! Still though dt kept up with him at about 70mph but he said he wasn't wide open.
http://i.imgur.com/fA2HyQ8.jpg?1
So i plan on keeping this offroad setup now, much more fun when you have a friend to ride with and a bike with an engine that doesn't break. Completely fell in love with it again, however my clutch cable frayed so i had to ride about 8 miles home with not clutch, was quite easy to be honest hardest part is getting going

My plan now is to rebuild my original engine, new rod, big end and crank bearings. Gearbox bearings etc seals you get it complete bottom end rebuild. Then maybe a 170 with ports corrected Who knows, but next payday this things having a powervalve servo fitted onto it

@Calum Exactly how i did it. Had to get a massive foot long 1/2 inch breaker bar to remove it. was very tight!

@Biker_123 Definitely supermoto, i never go off the road really as there isn't anywhere decent round here and i prefer to get the bike over on a nice road! Thanks dude, but it's too plain for me at the moment. But i've got more important things to fix than aesthetics first

@Biker_123 well i couldn't get rid of it, too much work for what i would get back from selling, it's a project after all it's supposed to break and need fixing! That and my student loan turns out more than i expected and i'll be keeping my job every other weekend when i'm at uni. The bike looks tatty as anything i reckon, the plastics are all stained and it's way too plain, i'm feeling some stickers when everything is sorted, make it stand out a bit more.
@Calum Will do, nowhere i could think of where i can get any better advice. There's a complete strip down video on youtube which i must have watched about 10 times by now aswell!

@jimmydc98 God knows, wouldn't like to know either. Too much

So finally caught that bike bug again, always had a hit and miss relationship with this bike the fact that it keeps breaking down. I think i have found my reason why, everytime i take my piston out it is a four point seizure, this indicates running lean. I thought that skimming my head would rectify this as i originally thought it was an overheating issue. However upon closer inspection it is still running lean, i believe some of this is to do with my oil pump. I've got it set all the way in the junction box to the carb, so my oil pump is already damn near full wack at idle. Which is why i eat through a litre of oil in about 2-250 miles and why it breaks, apparently too much oil can upset the Air to fuel ratio causing a lean condition.

So still on a full engine rebuild i've gotten to work, today i got the engine out of the bike and i've fallen in love with working on this thing. Everything is so simple and easy to get to and all using conventional sizes. So in just an hour and a half i've had the bike from completely together to stripped apart with the engine out. Whilst it is off the road i'm going to respray the tank as it has rust holes everywhere that need filling and tank needs respraying.
http://i.imgur.com/LBAV798.jpg?1
http://i.imgur.com/oNIVAJE.jpg?1
http://i.imgur.com/hwhiJUC.jpg?1
Not a bad transformation, so cute how small this engine really is. That's my days work done today, was going to sand down the tank and get it primered tomorrow but i'm off with my brother to view a car. Need to order an impact driver so i can take the stock screws out and then with it apart i'm going to clean and paint the engine! Atleast this is what i hope to do, also going to go a jet larger in the main aswell as get the right throttle cable

@Calum I could probably get it up running again, i'm guessing a ring has just come loose and spun round. But i won't know until i take the top end off. But i just want it rebuilt to find out what the bottom ends like and what the noise is.

But i'm decided on keeping the bike, just fixing it when i get the time. I agree that nothing on the bike is hard, it's so easy when there's a full video on youtube stripping it too. This is just something i need to space out in time, i won't be getting it done in one month at all