DT125R ARCHIVE

Calum122 · Calum122

Information On Yamaha's TZR125R 4DL Belgarda 3MB00P Barrel I want to collate information about the collection of cylidners available to us users of the DTR. I think it would be handy to have a library of different barrels with information so that people can effectively research information about...

Calum122 · Calum122

Information On Yamaha's TZR125R 4HW 4FU00 Barrel I want to collate information about the collection of cylidners available to us users of the DTR. I think it would be handy to have a library of different barrels with information so that people can effectively research information about different...

NEV · NEV

DT125R CYLINDER AND HEAD[URL=http://imageshack.us/photo/my-images/818/barrelandhead2.jpg/][IMG]http://img818.imag...

NORFE · NORFE

Hello all, Seen this online, it is how I do mine when I am rebuilding an engine. Works a treat as you can see. So if you're suffering from chronic head gasket failure give this a try.... http://www.youtube.com/watch?...

the only way is YAMAHA DTR · the only way is YAMAHA DTR

just arrived today,nicasil bore! Rare, great condition! the head studs where drilled out so im going to have to sort that. looks pv is in great condition going to sandblast all the bits and rebore and nickasil it,with a wiseco piston new wiseco gaskets on the way. then going to work the crank cases t...

madrevs · madrevs

Hi I haven't been around for a while but I'm after a bit of help rebuilding my brothers dt125re.so far I've stripped all the too end apart apart from the barrell itself.it seems to be firmly stuck to the bottom end on the two front studs.I've soaked it in penetrating fluid and whacked it God knows how many...

gooner78 · gooner78

Just had to push my bike back over 3 miles after the engine bogged then the rear wheel locked up for a second then died the engine is not locked up though as you can still push the kickstart down and there's still a tiny bit of compression left so what your thoughts I'm thinking I may have done a piston ring. I...

gooner78 · gooner78

Is there anyway of doing as I've just got my cylinder rebored and I want to torque the head down correctly but there seems to be no way to torque down of doing whilst the engine is in the frame due to the down tube of the frame. I don't really want torque down 4 of the nuts correctly and then just guess with the l...

sindre98 · sindre98

Hello anyone who knows what is causing this rattling sound? Its not so bad but its absolutely present..

Djreeterx · Djreeterx

Right guy, been thinking and need your options. When doing a rebuild on a yamaha dtr 125 1990/1999 when replaceing the gaskit set how meany of your use the paper base gaskit and aluminium head gaskit? Anyone ever used paper head gaskit aswell as base? And had any problem? Thanks, jay.

sindre98 · sindre98

Hi im currenly putting my cylinder on and when im turning the fleewheel so the piston moves up and down i can hear a knock everytime the piston changes direction.Is this normal? im 100% sure its not my connecting rod bearing. could it be the bearing that sits on the bolt that goes through the piston? beca...

sindre98 · sindre98

Hi just got my barrel bored to 57 mm and was wondering if i would have to modify the head gasket or? i think i can remember reading about it in here...

sindre98 · sindre98

hi as you can see it looks like there is missing a little chunk above my exhaust port. one day my bike rode very bad, bad compression. i found out that my piston had lost a chunk as you can see but no other damages but now it look like there is missing a little bit above my exhaust port. so maybe the piston took a...

dan28 · dan28

I have a 3bn head an cylinder an also a 3 mb head an cylinder would it be worth selling all the above an buying a cylinder an head from another bike tdr / tzr etc I assume the tzr an tdr have different types of cylinder etc just like the dt I was looking at some random things on google the other day an found...

L_COLE · L_COLE

Hi all Once again needing your advice Yesteday I came very close to coming off my bike on the way home from college, with absolutely no warning the back wheel locked up rolling off the throttle doing about 45/50mph, really don't know how I didn't come off but I somehow managed to keep it from going over, s...

tomimsmith1992 · tomimsmith1992

Did We ever find out if the barrels are interchangeable ? i have both barrels (3bn y1 and a 3mb y1) and a spare 3bn bottom end will the 3bn cylinder work ?

tomimsmith1992 · tomimsmith1992

hi lads iv got a spare barrel floating around i was going to sort it out as a spare if anything was to go wrong on the bike micro caliper reads the barrel at being 58mm at the top and 58mm at the bottom should i risk going any bigger ? or is it a scrap barrel also does anyone know where you can get a piston that big...

The_DtR_Maniac1991 · The_DtR_Maniac1991

Right well , my dt had a heat seizure about 500 miles after it had been rebored. (due to friend putting wrong spark plug in). i sent away for repair , because the piston got stuck at the top of the cylinder! I could put the piston thru the bottom of the cylinder then about half an inch to the top it gets stuck. s...

Calum122 · Calum122

Just read this thread from a chap in Brazil. SP Barrel gave up. Here's just a few pictures of the damage. Full thread can be found here: LINK

SMurF_12 · SMurF_12

Done a search and could not find any info I was wondering if anyone has tried it and / or had any reviews or feedback as to if its any good or not?? Thanks

GoProKid95 · GoProKid95

Heard someone mention that if the cap blows off of your coolant expansion bottle then the head gasket has gone? Is this the case, cos I'm experiencing difficulties of a similar nature!

superted · superted

Hi my friend just gave me a 3MB00P full top end and just wondering will it make any difference to my dt which has 3MB00 top end on at moment

Darren · Darren

after many months of contemplating buying the german 185ccm barrel from www.nopitz.de i came across a second hand 165ccm barrel bored and ported by the german company on the german ebay site at half the price they are charging. the barrel is a standard 4fu00 and looks to have been resleeved with a ste...

Liam12 · Liam12

telly ho chaps been a while since I've posted I'm after some info, currently got a yz125 picked it up dirt cheap needed a new cylinder and top end got all that but the old head studs from the old Athena cylinder are goosed so I need a new set anyone know if dt ones will fit? Pretty sure they're 52 ml m8's any inf...

sebamax2 · sebamax2

hi guys i just want to confirm if there is everyhing ok with my setup the bike is a dt 125 x 2005 it came with a 3mb barrel and 3bn head on it running a tzr piston. would i be better of switching to 3mb head aswell or is it good how it is now?

Topic		Started By	Replies	Views	Last Post
	STICKY: Yamaha TZR125 R 4DL Belgarda Cylinder Yamaha TZR R 4DL Belgarda Motori Minarelli P Barrel 3MB (Preview) Information On Yamaha's TZR125R 4DL Belgarda 3MB00P Barrel I want to collate information about the collection of cylidners available to us users of the DTR. I think it would be handy to have a library of different barrels with information so that people can effectively research information about...	Calum122	0	2510	Jan 17, 2014 by Calum122
	STICKY: Yamaha TZR125 R 4FU Cylinder TZR TDR 4FU Nikasil 4HW European Barrel Cylinder (Preview) Information On Yamaha's TZR125R 4HW 4FU00 Barrel I want to collate information about the collection of cylidners available to us users of the DTR. I think it would be handy to have a library of different barrels with information so that people can effectively research information about different...	Calum122	0	4043	Jan 15, 2014 by Calum122
	STICKY: DT125R CYLINDER AND HEAD - PARTS BREAKDOWN (Preview) DT125R CYLINDER AND HEAD[URL=http://imageshack.us/photo/my-images/818/barrelandhead2.jpg/][IMG]http://img818.imag...	NEV	0	1314	Jun 25, 2012 by NEV
	STICKY: Head Gasket Gone??? Look Here (closed) Head Gasket How To Warped Head Cylinder Fix (Preview) Hello all, Seen this online, it is how I do mine when I am rebuilding an engine. Works a treat as you can see. So if you're suffering from chronic head gasket failure give this a try.... http://www.youtube.com/watch?...	NORFE	0	1869	Mar 24, 2012 by NORFE
	200cc ,zeeltronic, 3xp, v-force, dep, tm34ss, yz induction hose mod ( 1 2 3 4 5 … 9 ) (Preview) just arrived today,nicasil bore! Rare, great condition! the head studs where drilled out so im going to have to sort that. looks pv is in great condition going to sandblast all the bits and rebore and nickasil it,with a wiseco piston new wiseco gaskets on the way. then going to work the crank cases t...	the only way is YAMAHA DTR	257	108230	Jan 18, 2016 by the only way is YAMAHA DTR
	Separating barrell from engine (Preview) Hi I haven't been around for a while but I'm after a bit of help rebuilding my brothers dt125re.so far I've stripped all the too end apart apart from the barrell itself.it seems to be firmly stuck to the bottom end on the two front studs.I've soaked it in penetrating fluid and whacked it God knows how many...	madrevs	3	1412	Jan 3, 2016 by Calum122
	engine just locked up (Preview) Just had to push my bike back over 3 miles after the engine bogged then the rear wheel locked up for a second then died the engine is not locked up though as you can still push the kickstart down and there's still a tiny bit of compression left so what your thoughts I'm thinking I may have done a piston ring. I...	gooner78	21	2281	Jun 26, 2015 by gooner78
	torquing down a cylinder head whilst engine is in the frame (Preview) Is there anyway of doing as I've just got my cylinder rebored and I want to torque the head down correctly but there seems to be no way to torque down of doing whilst the engine is in the frame due to the down tube of the frame. I don't really want torque down 4 of the nuts correctly and then just guess with the l...	gooner78	4	1659	May 14, 2015 by Calum122
	Mild rattling sound. could it be the clutch? top end just rebuilt (Preview) Hello anyone who knows what is causing this rattling sound? Its not so bad but its absolutely present..	sindre98	4	1356	Apr 21, 2015 by Calum122
	1990 DTR 125 (HEAD GASKIT DISSCUSTION) (Preview) Right guy, been thinking and need your options. When doing a rebuild on a yamaha dtr 125 1990/1999 when replaceing the gaskit set how meany of your use the paper base gaskit and aluminium head gaskit? Anyone ever used paper head gaskit aswell as base? And had any problem? Thanks, jay.	Djreeterx	5	1621	Mar 27, 2015 by Calum122
	knocking when piston changes direction (Preview) Hi im currenly putting my cylinder on and when im turning the fleewheel so the piston moves up and down i can hear a knock everytime the piston changes direction.Is this normal? im 100% sure its not my connecting rod bearing. could it be the bearing that sits on the bolt that goes through the piston? beca...	sindre98	8	1716	Mar 16, 2015 by sindre98
	necesarry to modify head gasket overzie? (Preview) Hi just got my barrel bored to 57 mm and was wondering if i would have to modify the head gasket or? i think i can remember reading about it in here...	sindre98	4	1212	Feb 26, 2015 by 1DOWN5UP
	chunk missing? (Preview) hi as you can see it looks like there is missing a little chunk above my exhaust port. one day my bike rode very bad, bad compression. i found out that my piston had lost a chunk as you can see but no other damages but now it look like there is missing a little bit above my exhaust port. so maybe the piston took a...	sindre98	15	1919	Feb 5, 2015 by sindre98
	heads an cylinders from diferent models of yamahas (Preview) I have a 3bn head an cylinder an also a 3 mb head an cylinder would it be worth selling all the above an buying a cylinder an head from another bike tdr / tzr etc I assume the tzr an tdr have different types of cylinder etc just like the dt I was looking at some random things on google the other day an found...	dan28	5	1785	Oct 20, 2014 by Calum122
	seized engine? (Preview) Hi all Once again needing your advice Yesteday I came very close to coming off my bike on the way home from college, with absolutely no warning the back wheel locked up rolling off the throttle doing about 45/50mph, really don't know how I didn't come off but I somehow managed to keep it from going over, s...	L_COLE	23	2570	Oct 8, 2014 by Calum122
	difference in cylinders 3bn & 3mb 3bn 3mb (Preview) Did We ever find out if the barrels are interchangeable ? i have both barrels (3bn y1 and a 3mb y1) and a spare 3bn bottom end will the 3bn cylinder work ?	tomimsmith1992	2	1267	Sep 19, 2014 by tomimsmith1992
	+2.5 mm oversize on a 2000 barrel (Preview) hi lads iv got a spare barrel floating around i was going to sort it out as a spare if anything was to go wrong on the bike micro caliper reads the barrel at being 58mm at the top and 58mm at the bottom should i risk going any bigger ? or is it a scrap barrel also does anyone know where you can get a piston that big...	tomimsmith1992	3	1139	Sep 3, 2014 by Calum122
	Silly question probably lol. (Preview) Right well , my dt had a heat seizure about 500 miles after it had been rebored. (due to friend putting wrong spark plug in). i sent away for repair , because the piston got stuck at the top of the cylinder! I could put the piston thru the bottom of the cylinder then about half an inch to the top it gets stuck. s...	The_DtR_Maniac1991	4	1122	Aug 23, 2014 by The_DtR_Maniac1991
	Expensive Bill For This Chap SP Barrel (Preview) Just read this thread from a chap in Brazil. SP Barrel gave up. Here's just a few pictures of the damage. Full thread can be found here: LINK	Calum122	7	1905	Aug 18, 2014 by 2BLimitless
	Athena 125 cc top end (Preview) Done a search and could not find any info I was wondering if anyone has tried it and / or had any reviews or feedback as to if its any good or not?? Thanks	SMurF_12	11	1561	Aug 9, 2014 by AndyYam
	Head gasket? 06 DT125RE (Preview) Heard someone mention that if the cap blows off of your coolant expansion bottle then the head gasket has gone? Is this the case, cos I'm experiencing difficulties of a similar nature!	GoProKid95	1	963	Jun 5, 2014 by Calum122
	3MB00P (Preview) Hi my friend just gave me a 3MB00P full top end and just wondering will it make any difference to my dt which has 3MB00 top end on at moment	superted	22	3087	Mar 24, 2014 by Victor
	german 165ccm barrel: my new purchase (Preview) after many months of contemplating buying the german 185ccm barrel from www.nopitz.de i came across a second hand 165ccm barrel bored and ported by the german company on the german ebay site at half the price they are charging. the barrel is a standard 4fu00 and looks to have been resleeved with a ste...	Darren	6	1516	Mar 19, 2014 by SMurF_12
	Head studs (Preview) telly ho chaps been a while since I've posted I'm after some info, currently got a yz125 picked it up dirt cheap needed a new cylinder and top end got all that but the old head studs from the old Athena cylinder are goosed so I need a new set anyone know if dt ones will fit? Pretty sure they're 52 ml m8's any inf...	Liam12	0	912	Feb 14, 2014 by Liam12
	top end set up question (Preview) hi guys i just want to confirm if there is everyhing ok with my setup the bike is a dt 125 x 2005 it came with a 3mb barrel and 3bn head on it running a tzr piston. would i be better of switching to 3mb head aswell or is it good how it is now?	sebamax2	3	949	Oct 29, 2013 by sebamax2
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