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DT125R Forum -> General Chat -> Bike gave me a fright yday!!
Post Info TOPIC: Bike gave me a fright yday!!
Skintt125


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Bike gave me a fright yday!!
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Well lads, was out for a spin yday with my mate on the bikes cuz it was such a nice day! Done some country back-roads, came to a long straight & decided to give it the big 'un, and check out my top speed! All was grand until I hit about 8k revs in 6th gear.... the engine sounded as if it cut out and the bike lurched, coughed and shuddered violently, I started slowing down dropping down through the gears and then the bike start revving again! I pulled in to the side of the road with my mate and left it to cool down for a bit and to get myself together..... not a nice thing to happen at 120km/h!

After about 10-15mins I started it up again and it sounded grand! Not a bother! we took off again and the bike seemed real jumpy! I didn't screw it just kept it under 6k revs! Got it home in one piece and its still driving now but im terrified to screw it hard again! Can anyone shed some light on this subject? whyat in the name of fook was that??

Btw it had just been filled up with 2-stroke and the old piston had been cleaned up and put back into it!

Cheers,

Kev! wink



-- Edited by Skintt125 on Saturday 6th of April 2013 07:29:07 PM

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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Boxing


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And wait, the gasket, is it one of them white ones? Or one of them metal coloured ones, come in this pack:



If so, it's probably that. Swap it for an Athena gasket, all the boys on here have told me this and had problems with this particular gasket.

 

And I suggest checking my thread out, the guys all told me what to go through, might be some help to you as well.

http://dt125r.activeboard.com/t53172927/dt-wont-go-past-40mph/



-- Edited by Boxing on Saturday 6th of April 2013 07:58:50 PM

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Skintt125


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Calum122 wrote:

Did you bleed the oil system mate?

 No we didn't bleed the oil system when we were doing it! hmm My Dad was just saying there that maybe the bike needs to be upjetted and it was a bit of a heat seize that happened when I was screwing it!?



-- Edited by Skintt125 on Saturday 6th of April 2013 08:23:36 PM

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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Skintt125


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Calum122 wrote:

Speak to nathlad about drz's. i believe he's blown up a few...

 
Haha nath popped his DRZ a few times?? Aren't them engines supposed to be pretty bulletproof?? The one I'm looking at has a 460 big bore kit, full yoshi RS4 system, hot cams, JD jet kit, bigger carb and K&N filter among some other tidy little mods! only 14k miles on her too! I will look after it like a baby if I get it in time!! biggrin



-- Edited by Skintt125 on Saturday 6th of April 2013 08:27:56 PM

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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Skintt125


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Back on topic anyways, does it sound like the jetting could be the problem on the TDR?? Could it have been a slight heat sieze?? I have never changed the jets in it, and its de-restricted, End can on it and the airbox mod done! I'm getting worried, cuz I need the money from selling this to afford the DRZ! If it pops I am fcuked!! blankstare



-- Edited by Skintt125 on Saturday 6th of April 2013 10:05:19 PM

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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
tunertom


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did you use genuine gaskets on the top end?

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Skintt125


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Yep both gaskets are genuine!



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Boxing


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You only cleaned the piston? You didn't put a new one in?

Probably that piston is gone.

Take the exhaust off, and switch the ignition on and off, look up the exhaust port to see the condition of the piston.

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Skintt125


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Sorry should have explained that a bit better! I had a new mitaka piston kit in it, but there was piston slap with it in which didn't sound nice at all! The old piston was in very good condition and the rings were well within the service limit! So I decided to put that back in rather than buying another piston kit!



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Skintt125


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No its one of the black genuine Yamaha gaskets! The base gasket is genuine too!



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Boxing


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But you had it rebored? If so, the original piston would be too small?

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Calum122


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Sounds like the bore isnt within service limit. Check it. It may be necessary for a revore.

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Skintt125


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Boxing wrote:

But you had it rebored? If so, the original piston would be too small?

 No I didn't have it rebored! its a nicasil barrel!



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Calum122


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Are you sure?

Ah well in that case it may be inconsistencies in the borr. Even more expensive.

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Skintt125


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Calum122 wrote:

Sounds like the bore isnt within service limit. Check it. It may be necessary for a revore.

 Can nicasil barrels be rebored Calum?? I was under the impression that they couldn't and thats why you have to take extra care with them? confuse



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Calum122


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Did you bleed the oil system mate?

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Skintt125


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Calum122 wrote:

Are you sure?

Ah well in that case it may be inconsistencies in the borr. Even more expensive.

 disbelief

That is not good news... I'm supposed to be selling this on in a few weeks! Have my eye on a highly tuned DRZ400 sm for decent bills!!



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Calum122


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No. You would have to have it plated back up mate.

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Calum122


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Speak to nathlad about drz's. i believe he's blown up a few...

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ToySoldier


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he blew it once riped the exhasut manifold off and then when the engine was rebuild i think the wrong rings wear used so had to have it striped again lol

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MDK


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Skintt125 wrote:
Calum122 wrote:

Speak to nathlad about drz's. i believe he's blown up a few...

 
Haha nath popped his DRZ a few times?? Aren't them engines supposed to be pretty bulletproof?? The one I'm looking at has a 460 big bore kit, full yoshi RS4 system, hot cams, JD jet kit, bigger carb and K&N filter among some other tidy little mods! only 14k miles on her too! I will look after it like a baby if I get it in time!! biggrin



-- Edited by Skintt125 on Saturday 6th of April 2013 08:27:56 PM

 did he realy just say the drz (engines supposed to be pretty bulletproof??)  he was making a joke yes ?  althou they are great bikes and look awsome the one thing  I hear a lot is that they love to blow and are far from bullet proof .

but I could be wrong  pls feel free to correct me anyone ....



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good clean up of a old batterd  dtr  95

 
ToySoldier


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they are reasonably bulletproof normally its they get low on oil and i hear mostly its the newer ones they blow up

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Skintt125


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lol I meant bulletproof in terms of supermoto's! A lot of the time when they blow up its from not being maintained properly and being absolutely ragged around! lol!



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
tunertom


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almost any engine is bulletproof if its well looked after.


just some bikes need more maintenance than others.

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Nathlaad


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Na they are aslong as you keep on top of the oil, only blown it up twice and its under 8k miles lololololol

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ToySoldier


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dont forget to add the blown up gixxer 4 the written off ninja so dont blame the bike blame the rider XD


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Nathlaad


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Yeah, the gixxer 4 dropped 2 cylinders at 130mph that was funny haha, and the ninja got highsided and i landed on my head

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ToySoldier


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flid from berth to death with a pet hamster

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Skintt125


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Nathlaad wrote:

Na they are aslong as you keep on top of the oil, only blown it up twice and its under 8k miles lololololol

 Hahaha!! 8k miles and you blew it up twice!!! have you ever put oil in it??? aww



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2006 Kawasaki Ninja 650r (er6f) -http://dt125r.activeboard.com/t54040090/few-recent-snaps-of-the-er6/

2002 Yamaha TDR 125 Project - http://dt125r.activeboard.com/t51841846/finished-tdr/ *SOLD*
Nathlaad


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Skintt125 wrote:
Nathlaad wrote:

Na they are aslong as you keep on top of the oil, only blown it up twice and its under 8k miles lololololol

 Hahaha!! 8k miles and you blew it up twice!!! have you ever put oil in it??? aww

 got some expensive stuff in it now lad! 2nd time was due to the mong garage owner not matching the rings to the piston/barrell!



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