DT125R ARCHIVE

zo0op · DTR Senior Member

oversized piston

fuggie · DTR Senior Member

stick a link on here to them, still having problems?

zo0op · DTR Senior Member

fuggie wrote:

stick a link on here to them, still having problems?

http://cgi.ebay.co.uk/Piston-Kit-Yamaha-0-75-TZR-DT125R-TDR-TZR250-57-15mm-/180575940372?pt=UK_Motorcycle_Parts&hash=item2a0b2a2f14

+ yep but hopefully after iv done this rebuild it will run sweet.. with a re-bore,gaskets,piston,powervalve .... the rattleing was cumin from the powervalve in the end so got a new 1 + seals :) ...

fuggie · DTR Senior Member

is the powervalve actually pegged in position?

the piston in the picture is a fourstroke piston probably not the one they would sell you, you can tell from the valve cut outs on the crown

zo0op · DTR Senior Member

fuggie wrote:

is the powervalve actually pegged in position?

the piston in the picture is a fourstroke piston probably not the one they would sell you, you can tell from the valve cut outs on the crown

thats why i was comfused lol + not yet mate not put the top and back togeather yet but it will be yehh :) ... you got any running in tips?? lol

fuggie · DTR Senior Member

for 500 miles use small throttle openings, starting off with a very low maximum rev limit and every hundred miles allow yourself a extra 1000 rpm, you'll get varied advice if you ask other people though, this method has always worked for me and i ride hard once its run in - you've got a round slide carb on that havn't you? i had a 150 main jet running it in with the powervalve pegged open and found after that was too lean still

-- Edited by fuggie on Tuesday 19th of October 2010 04:30:36 PM

zo0op · DTR Senior Member

fuggie wrote:

for 500 miles use small throttle openings, starting off with a very low maximum rev limit and every hundred miles allow yourself a extra 1000 rpm, you'll get varied advice if you ask other people though, this method has always worked for me and i ride hard once its run in - you've got a round slide carb on that havn't you? i had a 150 main jet running it in with the powervalve pegged open and found after that was too lean still

-- Edited by fuggie on Tuesday 19th of October 2010 04:30:36 PM

cheers mate i have trouble not giving it sum lol spose i will have to go easy for once.. iv broke my hand so that shud slow me down abit as its my throttle hand lol ... what jet would u suguest? mine will be pegged fully once its run in propily :)

fuggie · DTR Senior Member

if your running it in on one of the restricted settings then standard may be okay, with it pegged open i'd suggest 170-180 is a good starting point, mine was best about 180 but it differs from bike to bike, bit of trial and error i'm afraid

fuggie · DTR Senior Member

or if you wanted to save on trouble the jetting for the later flatslide carbs is well documented on here if you got one of them instead, and its a little bigger so more power, thats the way i'm going now

Spartan · DTR Senior Member

Running mine in was 500 miles of mentally challenged slowness. Seriously man the amount of times I wanted to give it some was just too much sometimes I had to pull over lol

...well maybe not that bad but you get what i mean biggrin

Is this the third/second rebore for the bike, standard bore is 56mm i think.

zo0op · DTR Senior Member

fuggie wrote:
or if you wanted to save on trouble the jetting for the later flatslide carbs is well documented on here if you got one of them instead, and its a little bigger so more power, thats the way i'm going now

il try the 180 once i pin it open... my mates got a flatside i can have so il have it of him and try it out see what happens :)

zo0op · DTR Senior Member

Spartan wrote:

Running mine in was 500 miles of mentally challenged slowness. Seriously man the amount of times I wanted to give it some was just too much sometimes I had to pull over lol

...well maybe not that bad but you get what i mean

Is this the third/second rebore for the bike, standard bore is 56mm i think.

haha its hard isnt it il just have to stick to towns and trafic to keep me slow lol + erm not sure its the 1st one ive sent it for .. 1 ov the previous owners proily had it rebored before