DT125R FORUM

@Calum Ah ok. Thanks

@Calum saved Abit of money with the ignitech and I'm really happy with the new software etc to be fair though, and the spark is terrific out the unit!

Cheers guys, ordered from Performance Lab the other day, will update my build thread/make a new one with progress setting up this ignition and my PWK 32 carburetor on the new DTR engine shortly

DTRE and DTR have different fly wheels with different pickups. It's likely the ignition timing will be different. Therefore you will need an R CDI.

@Calum I'll take a picture of the head I've got, it's stamped 3MB but it's the one with the ridged, I'll have a look at the book cheers
I planned on skimming the deck down at the end to create slightly higher compression than standard ideally

@Glynn123 You said in my other post about me porting your cylinder, I advise you to send me the head aswell to get it machined to spec and derestrict it, as for rings, can't beat yamaha original ones for stock yamaha piston.

@Darty ah right cheers, I've had no issues so far on the standard float height the carb came with, what symptoms should I be looking for? Just a bog when holding bike wot for a while? Had bike flat out for a good minute or so in 6th and never seen any issues?

Merry Christmas Everyone!

@Calum i thought the same thing. a carb doesnt change that much so it should work when paired with the right intake. got a 36mm keihin to work on my dtre so why wouldnt a lectron work

@Glynn123 could be a fun little project to go mad on lots of bits available for those little engines

@glynn123 nothing broke can't be fixed. Might want to look at a sheet metal fabricator...

Was putting around today with a friend, riding small tracks and secondary roads. Didnt reach reserve in 200km, managed 25,5km/l.

@glynn123 I had an issue with mine couldn’t afford a fix so I done what I needed to the circlip was too big and wouldn’t stay in the groove so I threaded some wire in the circlip holes then tied it so it clamped the circlip shut and I ride off-road and it’s been good for a long time now

Yeah I've made a mistake haha, I have 59t rear and 16t front, it's very low geared so ordered a 17t front sprocket for a test since it was only £4 and I shouldn't have to cut the chain, will see how it goes but the bike pulls very strong up to 140kmh right now and wheelies on throttle sitting forward in 1st so hopefully it should have the grunt to pull enough in 6th with new sprocket.

the proper cotton braided fuel purpose hoses last a lifetime

using clear ones for fuel is asking for trouble, they go brittle, crack, split, leak and are toss!

you dont need clear ones, there is 2 filters in the petcock and theres a filter in the carb fuel inlet barb too

@glynn123 Only messing mate. Was on here though.

It's been a while, again
But my DT is finally out of hibernation properly and I've done some little bits, passed her MOT the other week with a couple advisories, but nothing major at all.
Over the winter I've been fitting and experimenting with a new Polini PWK 32mm carburetor, after lots and lots of tuning and jetting I've finally got her right, not perfect, but right for now!
The carburetor made a nice difference I found, revs up clean and seems to have more torque throughout the revs than standard, fit original intake system nice too.
I bought a cheap blowtorch, butane and some heat proof lacquer to blue the welds on my romeu exhaust and clean up some of the rough spots from the grit and grime of the UKs winter roads.
It took a long long time and nearly killed me with the fumes but it's looking good now! And I'm starting to be happy with the build, still after some decals for the bike but struggling to find someone who can do designs how I'd like, but I'll keep the search up.
I also just got an absolute bargain of a DTR engine, I think it's a 2003 but it is completely unsplit, none of the bolts had been touched (until I got to it 🙄) and it came with a fresh original carb and servo. Took the cylinder off to free the rings, piston and bore look brilliant but rings are slightly out of spec at 19 thou so ordered an original set and Athena gaskets to bring it up to spec. This engine will be dropped in my bike over the next couple months, just got to steal the unrestricted head from my current engine and it should be good to drop in once built.
Got a 200 mile memorial run in a week and a half so trying to get some miles on the bike and iron out all carb issues etc, I'll keep updated on how it all goes.
Here's a pic of the toys currently
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@irongamer727 The stock Pilot Jet is (25) , My advice is to try (27.5) to support your mods.

Also dont forget about Needle height! Very important aswell

Doubtful, but an adapter shouldn't be too hard to make. Just make sure you centralise the caliper over the disc.