DT 125 RE Supermoto Build
It's winter again, which means my DT is spread across the workshop.
Going for some more power for next season, plans are 32mm carb, some porting work, fresh piston and zeeltronic cdi
My box of goodies arrived today meaning I can start work
32mm Polini reworked PWK carburetor and some Jets to play with
I'm really happy with how this carburetor is built, one of the best I have seen in person and I've tried new Mikunis etc
Even managed to fit the carb in the standard DT rubber without any modification! Although it was very tight.
While I had the carb off I decided it was time to fit the carbon fiber reeds I've had laying around for over a year, doubt they make much of a difference but wont do any harm
I got the carb in and the bike runs happily on choke, although it does sound lean to me, which I expected. It won't run at all off choke but will be swapping out the pilot jet after work tomorrow for more experimentation
stinkwheeler last edited by
This is gold let us know how you get on I'm doing the exactly the same thing over the coming weeks so this may be verry helpfull
NINJA last edited by
@Glynn123 Polini carb looks mint bud, the workmanship is much better than Dellorto's. How much did it set you back???
@stinkwheeler will do mate, sadly doesn't seem as if anyone has tried this carburetor, or at least nobody has wrote about the process online. Shame really as there is a lot of great budget options with the PWK carburetor. I was recommended to use them by 2Stroke stuffing and BARacing. Only problem I'm finding so far is the standard airbox boot is too small for the carb, so I'm looking at buying some hose and making something up so that I can still use the standard airbox.
@NINJA it was on sale for about £110 on Racing Planet mate, and I think about £20 worth of Jets ontop of that, bargain I'd say
NINJA last edited by
@Glynn123 Yeah that's a damn good price indeed!!!
Calum last edited by
@Glynn123 Heat gun and some leverage mate. We fitted a Kehin 38mm inlet manifold to the Stock DTR Air box way back when. So it's definitely doable.
@Calum ah right I'll give that a shot tomorrow aswell then! My boot has slight splits about a couple mm long on the end where it clamps on the carb, and the outer is about the same size as the actual carb inlet haha
Calum last edited by
@Glynn123 I'd be inclined to get a new one. Any split there may allow unfiltered air through, and/or water/
Also when you try to stretch it you may cause the cracks to get worse.
Pretty sure I bought a brand new one for like 10er. Was a while ago now though.
@Calum I'll take another look tomorrow too see how bad it is, can't remember too much over memory haha, if it's bad I'll get on fowlers
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