And she just S***T herself...

[Dreamflyer]

the bike i mean.
I know i know. Hyodung. dont need to repeat it. now i understand...
Bigend...Sounds like the big end bearing is rooted. Was just riding along, about maybe 145k on the clock...and all of a sudden, she lost RPM...nursed her home...ticking like mad, and straight to the Dr yesterday morning..
today...i'm told prob the big end...and approx $1000 to fix!!!

PISS ME OFF!
Just spent $500 last week on its MASSIVE 20,000km service!
Not impressed.
Orriginally we thought it might have been the cam tensioner...but turns out...nope.

FUCK!

What courses Big Ends to fail?? I have know idea about them...but keep hearing about them and how important they are...

[Disco Dan]

What courses Big Ends to fail?

After only 20,000 k's... shockingly poor manufacturing. But hey, you knew that when you bought it right?

[Mully]

Evolve it - into a Monster

G'won.... Please....

[YellowDog]

Sorry to hear your bad news.

Riding at too lower revs ain't good for the big ends.

Shame it didn't happen before the big service.

[riffer]

145k on the clock? As in 145 km/hr?

You were redlining it mate. And for how long?

[TOTO]

nah , 145km/h is not the redline on a hyo...when I had mine , it went till 165 and wasnt redlining yet, i was just too fat to get it up to 170 :lol:

[AllanB]

Bugger!

Straight after an extensive service too ........

Lack of oil or low pressure will shit a big end .......... mind you that will stuff most bits of an engine.

How old is it and how many kms on it?

[sil3nt]

Isn't a service meant to prevent this?

[steve_t]

Bugger!

Straight after an extensive service too ........

Lack of oil or low pressure will shit a big end .......... mind you that will stuff most bits of an engine.

How old is it and how many kms on it?

+1 Normally it's oil starvation

[Subike]

you had it serviced last week,
and it runs a bearing this week??
sounds very dodgy to me.
especially since it has only done 20k distance!!
Get a seond opinon as to why it run the bearing

[YellowDog]

I doubt that the garage forgot to top it up.

Maybe they forgot to change the sump plug washer and hence you have ran low.

Surely seizing up would have been the net result of being low on oil?

[Sketchy_Racer]

I have a almost brand new motor here for it of you are interested.

And I would also put money on it that it'll cost a damn sight more than $1000 to fix.

A new crank is $800 for one of those plus about 20 hours to do the job at mech charge out which is about $65p/h so there's about $1300...

It's a real bugger and in todays "chuck it away" mentality it's the most economical thing to do with that motor.

[jono035]

I have a almost brand new motor here for it of you are interested.

And I would also put money on it that it'll cost a damn sight more than $1000 to fix.

A new crank is $800 for one of those plus about 20 hours to do the job at mech charge out which is about $65p/h so there's about $1300...

It's a real bugger and in todays "chuck it away" mentality it's the most economical thing to do with that motor.

And on the bright side, you can recover some of the cost by parting out the good bits of the original motor or keeping it for spares...

[Dreamflyer]

I have a almost brand new motor here for it of you are interested.

And I would also put money on it that it'll cost a damn sight more than $1000 to fix.

A new crank is $800 for one of those plus about 20 hours to do the job at mech charge out which is about $65p/h so there's about $1300...

It's a real bugger and in todays "chuck it away" mentality it's the most economical thing to do with that motor.

I will deff keep that in mind bro. how much? a hyo 250 engine? how many k's?

Na it wasn't redlining...and i was only at that speed for a whole maybe 5 secs...

and as for the lack of oil..they filled it up. how do I know? i checked it when it came back, and today i went in and saw the bike...oil through the filter, and everywhere its ment to be...by the bucket loads. there was deff oil in the unit...so what else could cause a big end to go?

The mec said IF that is what has happened, they will go to Hyosung and ask them to come to the party, which he thought may be parts...as he has never heard of a hyo doing a big end...and with only really low k's...hmm. The bike is a 2007 model btw. Always been serviced and looked after. Always warmed up before i go in the mornings and warmed down (to a point) etc etc.. so i approved for him to take the heads off and check it all out...will know more on tues or wed... and seeing as i go past there almost every day on my run at work, i'll pop in a check things out also. Cant say i've ever had a problem..EVER with big bikes. they are a fantastic company to deal with in my opinion...

[Teflon]

To many wheelies.....

[Ixion]

What sort of big end is it? Roller bearing; split Vandervell shell; or white metal bush on a split crankshaft?

[Dreamflyer]

What sort of big end is it? Roller bearing; split Vandervell shell; or white metal bush on a split crankshaft?

i havn't a clue...i am still only (tonight) learning what they do letalone what kind i've got..

[Mully]

What's the warranty period on a Hyosung?

I've always been interested in the outcome of going a manufacturer when you are outside the warranty period. Under the CGA, goods must last for a reasonable period of time.

[Chooky]

Hmmm..... happened just after a service...?

Chances are its something they did, or didnt do.

Might be worth asking what sort of oil they put in it..
Get a sample if you can and have someone check it out and make sure its not hydaulic oil or something..

[Conquiztador]

Reasons big ends go:

- Age. If oil changes done on regular basis and good oil used, oil filters changed, oil pump working well, then on any decent bike you should get over 100K before any problems. Normally up to 150K

-Crappy oil Not right oil can kill the big end fast.

-Mechanical failure of other bits Faulty oil pump, metal bits (alloy, brass, any really) that have come off from other parts of bike and then getting in the big end bearing.

-Lack of oil Blocked oil filter, blocked oil line, faulty oil pump, not enough oil.

-Crap in oil As you would never your self introduce something that is not to be in the oil this is by mistake (leave oil plug off in rain) or on purpose (by someone who hates you or does not want you to ride the bike, or by a mechanic who wants more work...). Anything will do to kill the big end (as most, if not all, bikes have their oil filter on the return line): water, sand, sugar, metal filing).

Crappy bearings I have no idea what is inside a Hyosung (and have no plans to find out) but I be prepared to bet my left nut that there is no SKF or Timken bearings inside but some crap made outta inferior soft Asian metal.

-Too early timing (Too advanced) Puts heaps of pressure on the big end as it will have to fight the explosion each time.

-Revving the snot outta her Makes sense. She has to work her gut out and something will give.

-Assembly (Added after reading bsasupers post, good point) The big end is one of the bikes most critical bits and therefore needs to be assembled with care. Clean environment, all bits to specification and all bolts to specific torque, as if over tightening or too loose, the wear will increase heaps.

And I am sure there are some other reasons too that I have omitted. But these should cater for 99% of big end failure. Sadly if you have no idea, then you are at the mercy of the mechanic, and if he has caused it, do you think he is gonna tell??

[bsasuper]

As in a previous post, its the quality of the machining and matching of parts when assembled at the factory,hyosung quality control is crap,unlike the big jap brands which are more or less blueprinted from the factory.

[crazyhorse]

Welcome to Motorcycling mate - where anything and everything can happen.

[Jizah]

The bearings are indeed, complete shit.

[Lurch]

As in a previous post, its the quality of the machining and matching of parts when assembled at the factory,hyosung quality control is crap,unlike the big jap brands which are more or less blueprinted from the factory.

:clap:

A single example of one of the most common bikes on the road has a big end failure and suddenly Hyosung is the devil again.

I might buy into this if people just hadn't forgotten about the number of 'big name' Jap bikes that died 20 years ago when those same companies were actually making 250's.

Has anyone stopped to consider the fact that only the best examples of the Jap bikes are still on the road? The bad ones have all long since died violent, bearing exploding, cylinder gouging deaths.

It's like the weather, people forget very quickly, and then start calling it global warming.

[jono035]

:clap:

A single example of one of the most common bikes on the road has a big end failure and suddenly Hyosung is the devil again.

I might buy into this if people just hadn't forgotten about the number of 'big name' Jap bikes that died 20 years ago when those same companies were actually making 250's.

Has anyone stopped to consider the fact that only the best examples of the Jap bikes are still on the road? The bad ones have all long since died violent, bearing exploding, cylinder gouging deaths.

It's like the weather, people forget very quickly, and then start calling it global warming.

Very good point, but I think most people should be forgiven for equating chinese with crap at the moment, at least for the most part. My experiences with crap chinese stuff run from small pieces of electronics right through to container cranes and some of the stuff I've seen is pretty horrendous...

[sil3nt]

Hyosung is Korean not Chinese....

It looks like most of the members here have gone through a Hyosung factory tour and seen how poorly these bikes are made because surely they wouldn't talk crap without any facts!

[jono035]

Hyosung is Korean not Chinese....

It looks like most of the members here have gone through a Hyosung factory tour and seen how poorly these bikes are made because surely they wouldn't talk crap without any facts!

Korean huh? Well I haven't had anything at all to do with Korean made stuff at all, so I couldn't possibly comment :D

[YellowDog]

All the reports I have read say that Hyosung motorcycles are well made and as good as the Jap bikes.

You will always get the odd 'dud' one. 20k is hardly any use at all.

I would be surprised if the manufacturer refuses to play ball.

[jono035]

All the reports I have read say that Hyosung motorcycles are well made and as good as the Jap bikes.

You will always get the odd 'dud' one. 20k is hardly any use at all.

I would be surprised if the manufacturer refuses to play ball.

The fact that it would seem they have a negative image to overcome may even be of help in this situation.

[Dreamflyer]

All the reports I have read say that Hyosung motorcycles are well made and as good as the Jap bikes.

You will always get the odd 'dud' one. 20k is hardly any use at all.

I would be surprised if the manufacturer refuses to play ball.

Well, here we are hoping...and yeah, from what i have read of reviews and others experiences with sungs, they are a good quality bike, in par with jap stuff. lets not forget they have been making bikes since 1979! sure their new in the street bike market, but same engine principals.
and 20k is a bran new bike really.

however my money is not on the fact the mec stuffed up. from what iv seen, the guy is top notch, and very methodical, with certs to work on just about anything on 2 wheels, and sometimes 4...but hey, i could b wrong

from my research, the sungs that shit themselves, mainly do it on the minor stuff anyway, mostly to do with the parts that are assemblled away from the factory in a rep store! the engine is a complete unit when it comes to them.

so dodge parts maybe?

[Dreamflyer]

What's the warranty period on a Hyosung?

I've always been interested in the outcome of going a manufacturer when you are outside the warranty period. Under the CGA, goods must last for a reasonable period of time.

you have a very good point...worth investigating ,y options under the CGA if they dont come through?
warranty on th '07 is 12 months. then hyosung nz found out the rest of the world were offering 24 months, so in april '08, they upped it to 24months...

[Mully]

you have a very good point...worth investigating ,y options under the CGA if they dont come through?
warranty on th '07 is 12 months. then hyosung nz found out the rest of the world were offering 24 months, so in april '08, they upped it to 24months...

To my mind, 12 months (or 24 for that matter) is not a reasonable amount of time for a motorcycle engine to last.

Talk to the mechanic. See if he comes to the party. If not, talk to Hyosung.

[cowpatz]

Unfortunately you wont know for sure until the tear down. A comparison with the other bearings and the general internal engine condition will probably reveal the cause. A real bummer though, especially with such low Km's.

[musicman]

At least you made it to 20,000kms! :lol:

Hyosung "Hand-Grenade" GT250R (http://www.kiwibiker.co.nz/forums/showthread.php?t=86497)

The front Piston had blown, taking the Conrod and Crankshaft with it. I have owned the bike for 13 months, and done a touch over 17,000kms. The Warranty period is for 12 months and 10,000kms.

Engine transplant? (http://www.kiwibiker.co.nz/forums/showthread.php?t=87817)

[jonbuoy]

Does seem odd that the big end has gone, if it was oil starvation or low level/pressure I would have thought the top end would suffer first.

[CookMySock]

http://www.trademe.co.nz/Browse/Listing.aspx?id=229731198

First, exhaust all your options with the dealer and/or importer, and then if you are completely stuck, buy that motor and PM me and we'll sort you out.

Steve

[nosebleed]

realistically if it is as major as the intial diagnosis suggests and you have no joy with warranty repairs, then do as Gubb did, and kick it to the curb.

20,000 k's is nothing, and for an engine to fail and then become consumers problem is fuckin ludicrous

[danchop]

that did the same thing(big end)and i dont know many people with them so maybe its one of the poorly designed things on them