DT125R ARCHIVE

Sgt-syphilis · Sgt-syphilis

Hi, erm anyone know the part number for the 10cmish length of hose that runs from the waterpump to the boostbottle/intake area...? It fell against the zaust and burnt a hole in itself so coolant started spraying everywhere...including zaust so there was a lot of smoke haha

timostarz · timostarz

used 2 aftermarket gaskets now and water keeps getting into head after about 3 miles. is that just cos they are ****.... or am i doin summin wrong? after ive put it all back together do i need to just top up the coolent and there we go.... or do i have to bleed it or summing. cos there seems to be alot of air pr...

DT-X-Rudie · DT-X-Rudie

Long story short... I was riding my bike a few days again and started to hear a knocking sound...immedietly stopped and switched the bike up...restarted it and the knocking was gone.... comtinued on my way and the knocking came back and the bike died I checked around the bike and noticed I had no two str...

dtx zac · dtx zac

i recentley put a new piston and small end bearing in my bike but i want to rebuild the bottom end i was wondering how much are looking at for the crank bearing and various other bearings and is it easy enough to get the old crank bearings out or do they need to be pressed out ?? cheers zac

Motorcycle_Enthusiast · Motorcycle_Enthusiast

I have a 2003 DTR that seems to be ok in the Lower-Mid rev range but at high revs it splutters and doesn't go into the powerband properly like others I've ridden. I was using a BR 9ES and have changed it to an 8ES to see if this makes any difference but it's still the same. Also after it warms up it struggles to t...

gareth_iowc · gareth_iowc

morning all, right i have a dt125r and i've combusted water and ruined her lol. i'm looking at a forged piston for the rebuild. I've seen the tzr has a flat top and the dt a domed piston, would the flat top be worth using instead?

bkray · bkray

ok, so this is starting to get pretty serious and nearly forcing sale of the bike. Right, so, ive had countless top end rebuilds. my bottom end is fine. im now on my 4th head gasket in about 500 miles only the first was pattern. the one i have just put on, i decided to do myself. sent head off to PJME for a skim...

azbo b29 · azbo b29

i know theres a guide but i cant work out weather to have the powervalve fully shut to start with or fully open everyfing else has been a doddle and understtod it all juststuck with this npow any help appreciated as im doing it now cheers

dtr200691 · dtr200691

i have recently bought a dtr 2002 model love the bike but when try to open her up it struggles to get past 7000rpm n when it does is realy jerky screams like mad then completely cuts out then bk on any advice would me much appreiciated

2 Strok3 Junki3 · 2 Strok3 Junki3

hi all where can i get the best/cheapest rebore and piston kit match? wanted to get a 2mm oversized and head matched. i can dremmel the PV myself thanks

dab · dab

Just had a quick ride on my DT125R, first time I've been out on it. The bike ran OK at slow speeds, not megga but smooth enough. At some point when accelerating gently it suddenly went mad & wanted to start pulling wheelies on me. I'm not yet experienced enough to cope with it. I'm suspecting the valve...

braddtr125 · braddtr125

can i use castrol R in my drt or will if kill it basically as it's supposed to be the best oil going? and have that lovely smell

reborelc · reborelc

hi all im wanting to build a good fast engine PREFERABLY 90 = 94 models i was hopeing someone could tell me the codes on the crankcases example (3bn03 y-1) which one of these is the best to use also i would like to no which head and barrels to use ad also stator plates cdi's ive got loads of dtr spares only pr...

dan · dan

Can someone with a clutch basket laying around help me with some measurements ? I want to know if a DTR125 clutch basket is the same as a DTR200. The part numbers are close but not exactly the same. DTR125: 3BN-16150-01 DTR200: 3ET-16150-01 Everything else in the clutch have the same part numbers (e...

Joe-2LT · Joe-2LT

How do I know if my YPVS valve has already been modded for de restriction? Also is it worth fitting these parts ? - Racing reeds - Performance air filter - bigger jets? - chamfer inlet manifold thingy

baz · baz

Hi, All I am looking for a bit of advice my DT125r only revs to about 8 thousand and tops out at just over 70mph its got a full Dep exhaust but apart from that its standard i heard that they are restricted at the rev counter is this an easy job to take on or should it be left for motorcycle shop, Any info on the...

Grantypanty · Grantypanty

When i go out on my dtr i can ride it for under 2 minutes then it stops, i thought it might be something to do with the air filter, but i replaced it & it's still doing it. Then i thought it was the spark plug & replaced it & did it again. It's a little smokey but that's from the last owners putting **...

Grantypanty · Grantypanty

Hey people, Little problem here when riding my bike as it goes 45mph top haha what i know it's ment to do atleast 2 times of that! Cause the people i reccently baught it off made a fat hole in air box & changed the carb settings.. this caused the bike to mess up & flood after 2 mins of ridding stupid....

Dufferz · Dufferz

Hi guys i've only just signed up here as im sure you can tell, But i would REALLY, REALLY appreciate it if some of you wise fellows could try and help!

I've been having some major grief with my bike recently.. I left her for a few days, and she wouldnt start after! Full story: I left her for two days as...

azbo b29 · azbo b29

basically rebuilt my engine new bareell new head new plug new piston fresh oil fresh coolant new carb n powervalve system fitted it all bike wont start if i poar petrol down the head it fires n runs for a ew secs but wont if i dont i dont know what to do now any help appreciated

littlebasher · littlebasher

Okay Simple one for your If i keep the power up and stay in the right gear to keep the revs up, i have no issues with how the bike runs..It's quick and a lot of laughs But If i i'm in 6th gear and let off, not dropping huge amounts of speed, when i throttle up again she bogs down big time (with that usual pppppparp...

edgie432 · edgie432

my 56 plate DT125R is getting realy hot (im talkin like 1 min standing 3 mins moving) and the engine heat warning light thingy is always on also its using alot of coolant. ive replaced the head gasket and and most of the gaskets and oil seals but the daym light wont got out and i wont stop using coolant HE...

babibux · babibux

http://www.ebay.com/itm/Rear-Suspension-Yamaha-DT-125-R-Tuning-5cm-DT125x-NEW-/170595360136?pt=UK_Motorcycle_Parts&hash=item27b8469d88#ht_1991wt_1344

Nathlaad · Nathlaad

Well firstly i've been hearing a rattle for a while coming from the top end just above the powervalve on the left hand side, and today i've been trying to sort my clutch out (problem 2) so i i was warming the bike up to make life easier and this rattle is on a whole new level it litterly sounds like a screw or bo...

sheldonherron · sheldonherron

hi there im still having trouble understanding the power valve and servo system how do i disconnect the servo so my bike will actually pull !! and do i need to adjust the 2 stop screws aligning the 2 wires in the pulley so its in line with the hole ? i have recently shut off number 1 and opened number 2 a fai...

Sub Forum	Topics	Posts	Last Post
Coolant System - Read Only Sub-forums: FAQ (Coolant System)	22	273	Aug 31, 2015 by AndyYam
De-Restricting - Read Only	18	345	Apr 1, 2014 by Victor
Athena - Read Only	13	184	Sep 26, 2014 by Calum122
2t Oil - Read Only	18	167	Oct 14, 2014 by MDK

Topic		Started By	Replies	Views	Last Post
	Coolant hose (Preview) Hi, erm anyone know the part number for the 10cmish length of hose that runs from the waterpump to the boostbottle/intake area...? It fell against the zaust and burnt a hole in itself so coolant started spraying everywhere...including zaust so there was a lot of smoke haha	Sgt-syphilis	3	96	Nov 22, 2011 by Sgt-syphilis
	gasket troubles (Preview) used 2 aftermarket gaskets now and water keeps getting into head after about 3 miles. is that just cos they are ****.... or am i doin summin wrong? after ive put it all back together do i need to just top up the coolent and there we go.... or do i have to bleed it or summing. cos there seems to be alot of air pr...	timostarz	12	147	Nov 22, 2011 by Kalamity Kid
	Bikes Dead =( (Preview) Long story short... I was riding my bike a few days again and started to hear a knocking sound...immedietly stopped and switched the bike up...restarted it and the knocking was gone.... comtinued on my way and the knocking came back and the bike died I checked around the bike and noticed I had no two str...	DT-X-Rudie	11	160	Nov 22, 2011 by NEV
	How much??? (Preview) i recentley put a new piston and small end bearing in my bike but i want to rebuild the bottom end i was wondering how much are looking at for the crank bearing and various other bearings and is it easy enough to get the old crank bearings out or do they need to be pressed out ?? cheers zac	dtx zac	6	132	Nov 18, 2011 by dtx zac
	DT 125 R Bogs down in high rev range ( 1 2 ) (Preview) I have a 2003 DTR that seems to be ok in the Lower-Mid rev range but at high revs it splutters and doesn't go into the powerband properly like others I've ridden. I was using a BR 9ES and have changed it to an 8ES to see if this makes any difference but it's still the same. Also after it warms up it struggles to t...	Motorcycle_Enthusiast	31	2363	Nov 18, 2011 by bob91
	flat top or domed piston? (Preview) morning all, right i have a dt125r and i've combusted water and ruined her lol. i'm looking at a forged piston for the rebuild. I've seen the tzr has a flat top and the dt a domed piston, would the flat top be worth using instead?	gareth_iowc	11	190	Nov 15, 2011 by dirtpoor
	Coolant issues. ( 1 2 ) (Preview) ok, so this is starting to get pretty serious and nearly forcing sale of the bike. Right, so, ive had countless top end rebuilds. my bottom end is fine. im now on my 4th head gasket in about 500 miles only the first was pattern. the one i have just put on, i decided to do myself. sent head off to PJME for a skim...	bkray	53	903	Nov 14, 2011 by El_Faggo
	ypvs fitting (Preview) i know theres a guide but i cant work out weather to have the powervalve fully shut to start with or fully open everyfing else has been a doddle and understtod it all juststuck with this npow any help appreciated as im doing it now cheers	azbo b29	5	151	Nov 13, 2011 by azbo b29
	dtr wont rev high please help (Preview) i have recently bought a dtr 2002 model love the bike but when try to open her up it struggles to get past 7000rpm n when it does is realy jerky screams like mad then completely cuts out then bk on any advice would me much appreiciated	dtr200691	6	127	Nov 12, 2011 by Seiki
	Rebore and piston kit 2mm oversize? (Preview) hi all where can i get the best/cheapest rebore and piston kit match? wanted to get a 2mm oversized and head matched. i can dremmel the PV myself thanks	2 Strok3 Junki3	14	220	Nov 12, 2011 by NEV
	Is my YPVS pegged open (Preview) Just had a quick ride on my DT125R, first time I've been out on it. The bike ran OK at slow speeds, not megga but smooth enough. At some point when accelerating gently it suddenly went mad & wanted to start pulling wheelies on me. I'm not yet experienced enough to cope with it. I'm suspecting the valve...	dab	2	113	Nov 11, 2011 by dab
	Castrol R Oil (Preview) can i use castrol R in my drt or will if kill it basically as it's supposed to be the best oil going? and have that lovely smell	braddtr125	10	205	Nov 11, 2011 by Motorcycle_Enthusiast
	hi im lookin into building a fast engine cos my 02 dt is **** , (Preview) hi all im wanting to build a good fast engine PREFERABLY 90 = 94 models i was hopeing someone could tell me the codes on the crankcases example (3bn03 y-1) which one of these is the best to use also i would like to no which head and barrels to use ad also stator plates cdi's ive got loads of dtr spares only pr...	reborelc	1	109	Nov 11, 2011 by ToySoldier
	Clutch basket measurements (Preview) Can someone with a clutch basket laying around help me with some measurements ? I want to know if a DTR125 clutch basket is the same as a DTR200. The part numbers are close but not exactly the same. DTR125: 3BN-16150-01 DTR200: 3ET-16150-01 Everything else in the clutch have the same part numbers (e...	dan	11	187	Nov 8, 2011 by dan
	How do I know if my YPVS valve has already been modded for de restriction? (Preview) How do I know if my YPVS valve has already been modded for de restriction? Also is it worth fitting these parts ? - Racing reeds - Performance air filter - bigger jets? - chamfer inlet manifold thingy	Joe-2LT	1	129	Nov 7, 2011 by plebpl
	Derestricting (Preview) Hi, All I am looking for a bit of advice my DT125r only revs to about 8 thousand and tops out at just over 70mph its got a full Dep exhaust but apart from that its standard i heard that they are restricted at the rev counter is this an easy job to take on or should it be left for motorcycle shop, Any info on the...	baz	6	201	Nov 5, 2011 by xGINCATx
	My Dt125r keeps cutting out after 2 minutes of riding it, then does it again.. help? lol (Preview) When i go out on my dtr i can ride it for under 2 minutes then it stops, i thought it might be something to do with the air filter, but i replaced it & it's still doing it. Then i thought it was the spark plug & replaced it & did it again. It's a little smokey but that's from the last owners putting **...	Grantypanty	5	158	Nov 2, 2011 by dirtpoor
	Hey people, problem with carb... Am i missing another mixing screw on the right handside? More info here! (Preview) Hey people, Little problem here when riding my bike as it goes 45mph top haha what i know it's ment to do atleast 2 times of that! Cause the people i reccently baught it off made a fat hole in air box & changed the carb settings.. this caused the bike to mess up & flood after 2 mins of ridding stupid....	Grantypanty	3	96	Nov 2, 2011 by Grantypanty
	Running/starting problems! (Preview) Hi guys i've only just signed up here as im sure you can tell, But i would REALLY, REALLY appreciate it if some of you wise fellows could try and help! I've been having some major grief with my bike recently.. I left her for a few days, and she wouldnt start after! Full story: I left her for two days as...	Dufferz	11	204	Nov 2, 2011 by Dufferz
	bike wontstart (Preview) basically rebuilt my engine new bareell new head new plug new piston fresh oil fresh coolant new carb n powervalve system fitted it all bike wont start if i poar petrol down the head it fires n runs for a ew secs but wont if i dont i dont know what to do now any help appreciated	azbo b29	1	114	Nov 1, 2011 by Dingle001
	Running issue maybe....are all DT's like this? (Preview) Okay Simple one for your If i keep the power up and stay in the right gear to keep the revs up, i have no issues with how the bike runs..It's quick and a lot of laughs But If i i'm in 6th gear and let off, not dropping huge amounts of speed, when i throttle up again she bogs down big time (with that usual pppppparp...	littlebasher	1	125	Oct 30, 2011 by El_Faggo
	over heating and stupid red light ): (Preview) my 56 plate DT125R is getting realy hot (im talkin like 1 min standing 3 mins moving) and the engine heat warning light thingy is always on also its using alot of coolant. ive replaced the head gasket and and most of the gaskets and oil seals but the daym light wont got out and i wont stop using coolant HE...	edgie432	16	317	Oct 28, 2011 by shenglu
	DT 125 rear suspension tuning (Preview) http://www.ebay.com/itm/Rear-Suspension-Yamaha-DT-125-R-Tuning-5cm-DT125x-NEW-/170595360136?pt=UK_Motorcycle_Parts&hash=item27b8469d88#ht_1991wt_1344	babibux	1	124	Oct 27, 2011 by the only way is YAMAHA DTR
	Bit of a problem or 2 :( (Preview) Well firstly i've been hearing a rattle for a while coming from the top end just above the powervalve on the left hand side, and today i've been trying to sort my clutch out (problem 2) so i i was warming the bike up to make life easier and this rattle is on a whole new level it litterly sounds like a screw or bo...	Nathlaad	7	147	Oct 25, 2011 by Seanyftw
	disconnecting servo and power band position (Preview) hi there im still having trouble understanding the power valve and servo system how do i disconnect the servo so my bike will actually pull !! and do i need to adjust the 2 stop screws aligning the 2 wires in the pulley so its in line with the hole ? i have recently shut off number 1 and opened number 2 a fai...	sheldonherron	0	100	Oct 25, 2011 by sheldonherron
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