DT125R ARCHIVE

2T_Toe · DTR Respected Member

Anyone running a Dellorto carb?

DTCrazedKid · DTR Senior Member

I'd say they're just underspecc from the standard DT one, not really much in them to compare differnces to tbh

2T_Toe · DTR Respected Member

I thought i might see a bit of a performance increase over the 26mm Mikuni thats on it.

Not worth the hassle of the changeover then?

DTCrazedKid · DTR Senior Member

Isn't the standard 28mm? If it's 26 then yeah there will be a slight power increase as it'll allowe more airflow

Dingle001 · DTR Senior Member

The older models had a 26mm with a round slide, later ones were 28mm flat slide.

DTCrazedKid · DTR Senior Member

I've got 28mm Flatside on mine, and i think i've bought a 36mm carb lastnight to go on cant remember >.

craigbulmer · Guru

So you dont rag your bike, hardly ever on full throttle, but you wanna put a 36 mm carb on it lol?

DTCrazedKid · DTR Senior Member

don't have to use full power to gain advantages from a bigger carb, it'll boost power from the moment i pull back the throttle

2T_Toe · DTR Respected Member

My DT is an early 02 model, any idea what's on it carb wise? I've not checked but the Haynes says it has a 26mm Mikuni, i know Haynes manuals can be wrong from previous experience though!

Seiki · Admin

2T_Toe wrote:

My DT is an early 02 model, any idea what's on it carb wise? I've not checked but the Haynes says it has a 26mm Mikuni, i know Haynes manuals can be wrong from previous experience though!

It should be written on it smile

gasto · DTR Respected Member

If you want to fit a dellorto you will also need the rubber inlet from the tdr.I believe the dellorto works better than the mikuni 28 as long as you have right jetted.
Main-145
Pilot-45
Choke-60
Spray-266
Needle-x18 3position

2T_Toe · DTR Respected Member

I've just stripped and cleaned the Dellorto and had a look at the carb on my DT. I'm guessing it's a 28 as its a flat slide, it's a little oxidised, can't see any markings on it.

All of the above looks familiar Gasto but i've just put it back together so dont fancy double checking, might give it a whirl and see how it goes.
When you say the needle should be in the 3 position, is 1 at the pointed end and 4 at the flat end?

Edit* Just had a quick look and its running a 142 main, 45 pilot, 60 choke, 200 spray and X 24 needle at 3 position if it's as i mentioned above.

I didn't ride the bike the carb came off but someone managed to crash it so it must have been running ok...

-- Edited by 2T_Toe on Thursday 10th of March 2011 01:22:24 PM

gasto · DTR Respected Member

I have two dellorto 28 bs which came from a tdr bergarda and they both had the same settings.3 position for the needle i mean from the top of the needle counting down the positions.