DT125R ARCHIVE

ToySoldier · ToySoldier

when i get my dt the power valve need sorting i got it working correctly but just read its sopost to turn anti clock wiles and mine turns clockwise its a 2002 and i read the older bikes have the powervalve cables crossed but arfter 1997 they stop being crossed so im not to sure if its turning the right way =/...

ogrumpyone · ogrumpyone

Hi, I have a TDR 125 on a 95 plate it has been de-restricted and has been running o.k. The problem I have is that when the bike is going into the power band in a higher gear i.e. 4th to 5th or 5th to 6th is won't go into the band smoothly it seems to hold back. If you then change down you can rev it through the gear...

tripr · tripr

So finally after all my troubles my Dt runs but its serious trouble below 3k with choke an it will just cut out if the choke isnt on

Jimi · Jimi

Got a really serious problem here. My 1999 DTR125 was running a bit rough, particularly at low revs, so I decided to fit new crank seals and piston rings. I fitted the seals OK (without splitting the cases). No problem with the piston rings either. Reassembled the bike and it just wouldn't start. I...

2T_Toe · 2T_Toe

I have a couple of Italian Belgarda spec TDR's in bits at the moment, i'm making one good one from a couple of dodgy ones. They run Dellorto PHBH 28 carbs and was thinking of running the spare one i have on my sumo DT, anyone had any experience of them on their DT's? I've had a bit of a nose on the net and they...

DTCrazedKid · DTCrazedKid

Just went and started bike up a moment ago, and I've noticed she's smoking a **** load, could this be down to my jets? I've got a video, not sure if you can see the smoke well tho.. http://www.youtube.com/watch?v=QuMJqjX3evk

spadge · spadge

sup guys im new to this forum not realising that it was still active tho the website says last updated back in 07 :S but hi wondering if any1 can help me out here ive been searing for the missing parts on the the net for a whille and no had much luck with not knowing what the parts are called if some1 could point...

SUPERSTEVE · SUPERSTEVE

Not Good Really!!! Come in from work this morning and checked on the DT only to find a small puddle of petrol on the floor. Its dripping from the pipes below the engine, there must be about £3's worth of juice in the tank. Any ideas guys?

shane1472 · shane1472

Hi all just come across this site & thought i would post & see if anyone has any ideas on how to solve a fuel problem i have. I have recently brought a 1992 dt125r to restore, there is a nice healthy spark & the bike fired up last week but after travelling about a mile it bogged out & has not st...

Cardboardave · Cardboardave

Hi Im new here and New ish to riding on the road having just done my Cbt. I have a 96 tdr and would like to know what all this means Beacuse last night on a ride i managed to loose the right hand side powervale cap the 2 screws that hold it to the block and the alen bolt that holts both sides of the powervale togeth...

Dickhead · Dickhead

just got a gas gas last week of ebay on the the way home i stoped at a jetwash give it a little rev the bike made a sudden bang the engine stoped instantly with water coming from the head bolts upon inspection i find this the water from the head bolts was the result of the piston hitting the head and striping...

mammoth200 · mammoth200

Afternoon gentlemen. Just decided to do a compression test on the DTR, and it only came up as 85psi.... The reason for my question is when i had my Mito, if the compression was anything below 110psi the rings needed changing. Really all I need to know is what sort of compression should the engine be runni...

DTCrazedKid · DTCrazedKid

Just found these, these seem pretty interesting and have ALOT of good reviews.... http://www.forged-pistons.co.uk/ Click to "download catalogue" and their bike one will show up

dtrdanielson · dtrdanielson

hi does any1 know if a yz carb would fit on a dt asin would there be more power to the bike?

NathanDavies · NathanDavies

option=com_virtuemart&Itemid=15&vmcchk=1&Itemid=15

SARK · SARK

got up this morning and it wont idle will drive and run at over 3 k revs but when I let the revs drop it just drops to dead lol. There's oil coming out of where the plug is and out of the silincer ! It says in haynes manual the spark plug would be oily from over lubrication. So too much oil in bottom end ? I think oi...

DTCrazedKid · DTCrazedKid

I've got a 1993 engine (Used to working on 2003) and I cant seem to get the valve out... I've got the left side cover off and can see into the valve, just cant seem to pull it out... and the rideside cover isn't coming off, I've taken the 1 screw out attacked to it, but it's not comin off... Any ideas how to get i...

DTCrazedKid · DTCrazedKid

Anyone ever had/used/seen one of these? And do you know if the Engine would fit the DT125 Frame? My mates got one which is missing almost everything, he's got Frame, Wheels, And Engine and wondering will it fit my frame? cheers

tripr · tripr

Hello everyone. Got a 91 dtr recently wanted one over 20 years so im dying to get it running even more now iv had a little go. sparks top notch its good compresion blows your thumb of easy enough. i have a new pick up coming cos the wires were hammered they have that many breaks in from a previous owner. so so...

DTCrazedKid · DTCrazedKid

I've just got new Pistons/Rings and still have a slight knocking noise in my engine. I'm really not in the mood to be giving someone £150+ for a bottom end rebuild, and I stupidly sold the Engine that came with my bike when I originally bought it the other day (I had a "better one"; referb'd one...

DTCrazedKid · DTCrazedKid

Ok, I've been reding alot on the Re-Jetting stuff on here, but, I have no idea what the heck it's all saying I have the original yammy carb, fitted with the standard jets, Carbon Reed Valves and DEP Expansion pipe wth crappy Big One rear silencer and I have no idea what Jet Size I need.. What Jet sizes do you...

Jimi · Jimi

I've just fitted new crank seals and piston rings. The bike was running before I worked on it, but it wasn't running that well (hence the decision to fit new seals and rings). I have a spark (but I can't guarantee that it's sparking under compression). Fuel appears to be getting through. I even trie...

Dingle001 · Dingle001

Anyone who wants to tweak their DT carb might find this interesting. It explains Mikuni's jet needle system and might help if you are looking to change the mixture on the midrange to suit a different air filter etc. Alternatively just keep it pinned and dont worry about the midrange........... http:...

nathandtrpitt · nathandtrpitt

ive cleaned out the end of the exhuast and the whole extior and it still doesnt sound like it did before it runs fine but just doesnt sound as it did, any suggestions ?

SELLERNS · SELLERNS

I would be very grateful if anyone could identify my problem. I have just had a top end rebuild - Rebore, new piston and rings and gaskets ect. so isn't top end. I have rode it in 300 miles or so but now i am gettin quite a loud, only way to describe "clunk" sound when i change down gears from 3rd to...

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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
	newer powervalve info (Preview) when i get my dt the power valve need sorting i got it working correctly but just read its sopost to turn anti clock wiles and mine turns clockwise its a 2002 and i read the older bikes have the powervalve cables crossed but arfter 1997 they stop being crossed so im not to sure if its turning the right way =/...	ToySoldier	11	428	Mar 18, 2011 by StartSoIllFinishOn1
	Power Valve not cutting in smoothly?? (Preview) Hi, I have a TDR 125 on a 95 plate it has been de-restricted and has been running o.k. The problem I have is that when the bike is going into the power band in a higher gear i.e. 4th to 5th or 5th to 6th is won't go into the band smoothly it seems to hold back. If you then change down you can rev it through the gear...	ogrumpyone	26	512	Mar 17, 2011 by mammoth200
	So finally the Dt runs but its having trouble below 3k (Preview) So finally after all my troubles my Dt runs but its serious trouble below 3k with choke an it will just cut out if the choke isnt on	tripr	11	387	Mar 16, 2011 by tripr
	Six weeks in and still not starting (Preview) Got a really serious problem here. My 1999 DTR125 was running a bit rough, particularly at low revs, so I decided to fit new crank seals and piston rings. I fitted the seals OK (without splitting the cases). No problem with the piston rings either. Reassembled the bike and it just wouldn't start. I...	Jimi	13	289	Mar 16, 2011 by Jimi
	Anyone running a Dellorto carb? (Preview) I have a couple of Italian Belgarda spec TDR's in bits at the moment, i'm making one good one from a couple of dodgy ones. They run Dellorto PHBH 28 carbs and was thinking of running the spare one i have on my sumo DT, anyone had any experience of them on their DT's? I've had a bit of a nose on the net and they...	2T_Toe	12	358	Mar 16, 2011 by gasto
	Smoking way too much (Preview) Just went and started bike up a moment ago, and I've noticed she's smoking a **** load, could this be down to my jets? I've got a video, not sure if you can see the smoke well tho.. http://www.youtube.com/watch?v=QuMJqjX3evk	DTCrazedKid	13	437	Mar 16, 2011 by bkray
	Parts needed (Preview) sup guys im new to this forum not realising that it was still active tho the website says last updated back in 07 :S but hi wondering if any1 can help me out here ive been searing for the missing parts on the the net for a whille and no had much luck with not knowing what the parts are called if some1 could point...	spadge	5	230	Mar 14, 2011 by spadge
	Uh Ohhhhh (Preview) Not Good Really!!! Come in from work this morning and checked on the DT only to find a small puddle of petrol on the floor. Its dripping from the pipes below the engine, there must be about £3's worth of juice in the tank. Any ideas guys?	SUPERSTEVE	7	292	Mar 13, 2011 by dtrcruzer
	1992 dt125 r fuel problem (Preview) Hi all just come across this site & thought i would post & see if anyone has any ideas on how to solve a fuel problem i have. I have recently brought a 1992 dt125r to restore, there is a nice healthy spark & the bike fired up last week but after travelling about a mile it bogged out & has not st...	shane1472	2	238	Mar 12, 2011 by Dingle001
	Help please to indentify engine (Preview) Hi Im new here and New ish to riding on the road having just done my Cbt. I have a 96 tdr and would like to know what all this means Beacuse last night on a ride i managed to loose the right hand side powervale cap the 2 screws that hold it to the block and the alen bolt that holts both sides of the powervale togeth...	Cardboardave	13	918	Mar 11, 2011 by Cardboardave
	snaped conecting rod (Preview) just got a gas gas last week of ebay on the the way home i stoped at a jetwash give it a little rev the bike made a sudden bang the engine stoped instantly with water coming from the head bolts upon inspection i find this the water from the head bolts was the result of the piston hitting the head and striping...	Dickhead	5	257	Mar 11, 2011 by Cardboardave
	Compression questions! (Preview) Afternoon gentlemen. Just decided to do a compression test on the DTR, and it only came up as 85psi.... The reason for my question is when i had my Mito, if the compression was anything below 110psi the rings needed changing. Really all I need to know is what sort of compression should the engine be runni...	mammoth200	5	312	Mar 11, 2011 by NathanDavies
	Forged Pistons (Preview) Just found these, these seem pretty interesting and have ALOT of good reviews.... http://www.forged-pistons.co.uk/ Click to "download catalogue" and their bike one will show up	DTCrazedKid	7	302	Mar 11, 2011 by louisBOSS
	yz ta dt (Preview) hi does any1 know if a yz carb would fit on a dt asin would there be more power to the bike?	dtrdanielson	11	262	Mar 10, 2011 by DTCrazedKid
	Samco Hoses (Preview) option=com_virtuemart&Itemid=15&vmcchk=1&Itemid=15	NathanDavies	3	237	Mar 10, 2011 by DTCrazedKid
	Oil coming out of spark hole (Preview) got up this morning and it wont idle will drive and run at over 3 k revs but when I let the revs drop it just drops to dead lol. There's oil coming out of where the plug is and out of the silincer ! It says in haynes manual the spark plug would be oily from over lubrication. So too much oil in bottom end ? I think oi...	SARK	14	305	Mar 10, 2011 by Dickhead
	YPVS troubles... (Preview) I've got a 1993 engine (Used to working on 2003) and I cant seem to get the valve out... I've got the left side cover off and can see into the valve, just cant seem to pull it out... and the rideside cover isn't coming off, I've taken the 1 screw out attacked to it, but it's not comin off... Any ideas how to get i...	DTCrazedKid	2	208	Mar 9, 2011 by DTCrazedKid
	DT200 (Preview) Anyone ever had/used/seen one of these? And do you know if the Engine would fit the DT125 Frame? My mates got one which is missing almost everything, he's got Frame, Wheels, And Engine and wondering will it fit my frame? cheers	DTCrazedKid	7	354	Mar 9, 2011 by Seiki
	Dtr just wont start dagged it with a car went lovley but it was a one off ( 1 2 ) (Preview) Hello everyone. Got a 91 dtr recently wanted one over 20 years so im dying to get it running even more now iv had a little go. sparks top notch its good compresion blows your thumb of easy enough. i have a new pick up coming cos the wires were hammered they have that many breaks in from a previous owner. so so...	tripr	57	1173	Mar 9, 2011 by tripr
	1993 Bottom End (Preview) I've just got new Pistons/Rings and still have a slight knocking noise in my engine. I'm really not in the mood to be giving someone £150+ for a bottom end rebuild, and I stupidly sold the Engine that came with my bike when I originally bought it the other day (I had a "better one"; referb'd one...	DTCrazedKid	17	355	Mar 8, 2011 by DTCrazedKid
	Re-Jetting (Preview) Ok, I've been reding alot on the Re-Jetting stuff on here, but, I have no idea what the heck it's all saying I have the original yammy carb, fitted with the standard jets, Carbon Reed Valves and DEP Expansion pipe wth crappy Big One rear silencer and I have no idea what Jet Size I need.. What Jet sizes do you...	DTCrazedKid	5	255	Mar 8, 2011 by Spartan
	Engine won't start after re-build (Preview) I've just fitted new crank seals and piston rings. The bike was running before I worked on it, but it wasn't running that well (hence the decision to fit new seals and rings). I have a spark (but I can't guarantee that it's sparking under compression). Fuel appears to be getting through. I even trie...	Jimi	20	539	Mar 7, 2011 by DTCrazedKid
	Mikuni Carb Jet Needles (Preview) Anyone who wants to tweak their DT carb might find this interesting. It explains Mikuni's jet needle system and might help if you are looking to change the mixture on the midrange to suit a different air filter etc. Alternatively just keep it pinned and dont worry about the midrange........... http:...	Dingle001	6	253	Mar 7, 2011 by DTCrazedKid
	my bike dont sound the same after the hard green laning i done ydays (Preview) ive cleaned out the end of the exhuast and the whole extior and it still doesnt sound like it did before it runs fine but just doesnt sound as it did, any suggestions ?	nathandtrpitt	4	262	Mar 7, 2011 by NathanDavies
	Bottom End "Clunk!" As i change down gears i get a nasty clunking noise from 3rd to 2nd to 1st anyone help plz?????? bottom end rattle clunk noise gears stiff (Preview) I would be very grateful if anyone could identify my problem. I have just had a top end rebuild - Rebore, new piston and rings and gaskets ect. so isn't top end. I have rode it in 300 miles or so but now i am gettin quite a loud, only way to describe "clunk" sound when i change down gears from 3rd to...	SELLERNS	2	172	Mar 6, 2011 by Jak2k50
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