DT125R ARCHIVE

Dt Danny · Guru

RE: guidance needed of you kind fellows

eG x LoGiKzZ · Guru

did you clean the gasket surfaces, or use any sort of gasket sealant? there should also be washers on those nuts, strange for it to be leaking from there, how tight did you do the bolts? check them again, just do them FT lol

Dt Danny · Guru

yeh i cleaned the surface and no gasket sealer

eG x LoGiKzZ · Guru

did you fit the gasket the correct way up? cant work out how the coolant could get to the head stud unless its extremely warped ?

Dt Danny · Guru

yeh i tightend them in the right order and i dont think there over tight im not sure could it be the head gasket like the wrong year ?

Nathlaad · DTR Legend

set fire to it

Dt Danny · Guru

nath i feel like selling the ****er atm

Nathlaad · DTR Legend

firrrrrrrrrrrrrrrrrrrrrrrrrrrrrre do it

Dt Danny · Guru

lol and another thing the smoke smells really sweat like its coolent thats in the combustion chamber

Calum122 · Guru

Well you ain't doing yourself any favours by running it mate. Stop fannying around and just sort it out. It's not rocket science it's engine building.

Dt Danny · Guru

yeh i only run it the once then it just pissed out coolent

Dt Danny · Guru

ill do that tomorrow after i look at the gasket and could it be an air lock ? and im using a 1/4 ratchet so yeh lol

Dt Danny · Guru

and yeh under the nuts

Calum122 · Guru

Sand paper! Fook off!

The finest wet and dry you can buy mate! Don't use sand paper! You'll scratch the fück out of the head!

Dt Danny · Guru

yeh ill get some but ill see what condition the head is in tomorrow and ill up load some piccys

DT-R_bradders · Guru

head gasket is ****ed if its bubbling out when your turning it over by hand thats the compression pushing it out, so its leaking from the water jacket into the bore and out through the studs. ripping them up tight aint gonna do **** all thts a proper bodge dont do tht. somthing is defo not right with the head and or gasket and or barrel on the top surface. the gasket will seal the coolant in around the studs and obviously into the bore, its leaking through both seals. take head off carefully and take good high res pics if u can and post em up we wanna see under side of head both sides of gasket and top of barrel. then we'll go from there

scrimsmustang · DTR Mechanic

This might sound daft but have you put the proper dome nuts on the head as it will leak out of normal nuts ? Mind you it sounds like its not sealing properly if its burning water out of the exhaust. You need to make sure the mating surfaces are totally clean and shiney the head and the barrel. Its no good thinking ah thats clean enough it needs to be mint no little bits of crap anywhere. Anyway take it back off and do it all again. If you aint got a torque wrench to tighten everything down tighten the head nuts in sequence till they just feel tight then go round them again and give them all a little nip but dont tighten the f**k out of them.

DT-R_bradders · Guru

soz trip dude i wasnt implying that ur sayin to bodge it soz dude i know it sounded that way lol , but if one stud was loose im sure the others will hold the head down tight enough to squash up the seal around the stud in the gasket,

when the bikes running aswell a classic sign of gasket failure is that pressure builds up in the cooling system and it trys to spit it all out the expansion bottle breather, and somthimes even a bit of smoke in the bottle lol mine did it pretty bad

scrimsmustang · DTR Mechanic

If he,s pulled a stud it will defo leak Brad but it would only drip not piss out like hes saying, it woud piss out when its running. I recon he just aint cleaned the mating surfaces properly since this is the first time he has ever done anything like this.

Dt Danny · Guru

yeh i prolly havent but this is all new to me so im learning as i go along

scrimsmustang · DTR Mechanic

Next time it will be a piece of piss for you though, everyone has to learn and start somewhere mate.

tripr · Guru

haha no worries m8 i am quite good at the odd bodge it tho ,till i can get whatever it is sorted out properly anyway

I did rip a stud on an old barrel overtightening once wasnt a drastic leak but serious enough dripped always standing an poured out riding needed to be refiled after 5 miles.carry a bottle occasion well i waited on a gasket in the post, so id done everything right putting it back together got yet another gasket couldnt work out why it leaked until i put a non domed nut on where it was leaking an without to much pressure the stud pulled right out tightening the standard nut up so mine was just real weak from previous owners mullering it, so needed sorted anyway it was all found by mistake ,,but learn from your mistake tho hey. bought a helicoil set an got it up an running again in no time.

Calum122 · Guru

Yeah. He's a noob. Better to day fine wet and dry. I thought you meant sand paper that you'd use for wood lol. Ruin it using that lmao!

Ralzy · Guru

they have a rubber covering on them for a start will have the gen yami sticker on there with scrims code 3BN111810200 or this code will do the job aswell 3BN-11181-02

-- Edited by Ralzy on Friday 8th of March 2013 12:56:57 PM

-- Edited by Ralzy on Friday 8th of March 2013 12:57:45 PM

scrimsmustang · DTR Mechanic

scrimsmustang wrote:
Or 3MB-11181-00-00 if they cant get the early type anymore.

3MB-11181-02-00 Ralzy is right -00-00 no longer exists

-- Edited by scrimsmustang on Friday 8th of March 2013 01:16:45 PM

Steady Eddy · DTR Senior Member

eG x LoGiKzZ wrote:
it was leaking and blowing very badly, i suspeect it was just the dirt on the head creating a gap for it to leak, the gasket surfaces have to be spotless, use a stanley blade or credit card to remove the dirt easily

Be very careful with that Stanley blade it is very easy to cut a gruve in to the head or barrel I prefer to use emery paper gently but yes cleanliness is next to Godliness my old Dad used to say ,

-- Edited by Steady Eddy on Friday 8th of March 2013 07:17:37 PM

tripr · Guru

not cleaned up enough not a good head gasket there either thats the cheapo useless white ones m8 try those tdr ones in the link there good quality an the same as the dtr

http://www.ebay.co.uk/itm/Yamaha-TDR-125-5AN9-5AN-2001-2002-Cylinder-Head-Gasket-/150849507416?pt=UK_Motorcycle_Parts&hash=item231f54d058

soz bit outdated an behind theres a page 6 now too lol

-- Edited by tripr on Friday 8th of March 2013 07:43:13 PM

-- Edited by tripr on Friday 8th of March 2013 07:44:15 PM

-- Edited by tripr on Friday 8th of March 2013 07:44:59 PM

Dt Danny · Guru

**UPDATE**

i took the head off this morning and i found this ....

scrimsmustang · DTR Mechanic

Covered in s***e were its not been cleaned up properly, clean everything up properly and get a new gasket. U can try and clean that one up and give it a go but its probably f****d now.

Dt Danny · Guru

yeh ill do that and do you think that what my problem was ? with all that coolent on the piston ? no wonder why it smelled sweat lol