Project GT
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Hi all. Bought a GT125R as a none running project. Apparently the clutch plates broke and it cut out. I was recovered home then parked up for 4month. Battery is flat so unable to test anything. So i have removed the battery to charge and removed the fairings. Pretty much all front panels are broken/ cracked as is the trim under the seat where the lock is so on the look out for these which will cost more than the bike cost me 😖
Once i’ve got it up and running i will be sorting any rust and cosmetic damage along with sending for an MOT.
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Keep us posted and best of luck , hope to see some finished pictures of how she finally looks too before and afters!
Oh yes, the fairings cost a lot new , but you can always have some used ones and repaint them 😉
There is a clutch tutorial on the site, so it’s pretty handy if you get stuck overhauling the clutch system!
// Meditation doesn't mean you have to sit still....
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First thing i did was search clutch replacement which sent me here 👍
It’s in decent condition a good clean, rust removal and paint will sort a fair bit of it out. Hopefully going to have a look at repairing what gairings i can. Working for a Bodyshop consumables i should be able to get most of what i need inc Paint 😏. Already looking at a nice Ferarri Metallic Black with a bit of a Lamborghini Yellow to offset it. Looking for a fairing screw set if anybody knows where i can get one from??🤔
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Looking for a fairing screw set if anybody knows where i can get one from??
You can always send me an email as i live 20mins away to my cnc maker that did all the bolts you see on the shop , so i can make him do hyosung panels set screws in stainless.
I should really make a listing for that , i like that idea!
// Meditation doesn't mean you have to sit still....
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shall do just that when i get to the point of refitting fairings. Which hopefully should be soon if i can get the bike running.
Slight update i have had the bike turning over. I was told by the previous owner it’s the clutch that was the problem to it cutting out and not starting. But have no clue as to why this could be? Not tested for fuel or a spark yet which is the nx thing to check when i can. Which is hard with work and 2 kids under 6 😕 -
ill ask a few questions but if you say yes to any of them it means you verified each part and the bike should start or ….least see sparks….
Does the wheel spin freely in neutral?
Is the neutral light on?
Is there a clutch switch behind the handlebar ? (It must be there and i wouldn’t bypass it for several reasons)
Is there a switch under the kickstand ? (Bypass it!!!!!!) – Join wires, go crazy with tape or watch road debris kill the wires with rain water and stones.
While cranking, do you see sparks from each plug ? are they blue or yellow?
I am going to assume you followed the tutorial on clutch plates and install and checked everything inside the clutch basket before cranking the bike over.
// Meditation doesn't mean you have to sit still....
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I didn’t check the clutch and clutch basket 1st 😕 I charged the battery and checked if it cranked over. That’s as far as i have gone so far.
Neutral light is on but no chain on the bike to check if it moves freely in gear. Also gear lever peg is broken off (how it was when i picked it up)
It does have a side kick stand with complete wiring so not bypassed.
It does have a clutch switch and it’s not been bypassed.
Not checked for spark yet. Is it best to remove clutch cover and check in there first? Mainly as i couldn’t see how a clutch fault can cause it to cut out and not start but i can remove and check later this wk.
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I didn’t check the clutch and clutch basket 1st
I charged the battery and checked if it cranked over. Is it best to remove clutch cover and check in there first? Mainly as i couldn’t see how a clutch fault can cause it to cut out and not start but i can remove and check later this wk.Yeah use the tutorial to make sure the clutch basket and everything is very sound and also check your clutch cable is adjusted correctly.
The “arm” behind the engine where exhaust pipe is , that arm must be against sprocket cover.
Then allow 4mm free play at the handlebar lever when finishing cable adjustments.
Spin the front sprocket by hand fast it should not get stuck , that will assume correctly the gearbox is fully disengaged from the clutch system.
Try get a chain kit installed soon 😉
Show us here the picture of the broken gear shift assembly and i’ll advise properly.
It was probably dropped the bike.
[quote quote=6924] It does have a side kick stand with complete wiring so not bypassed.
It does have a clutch switch and it’s not been bypassed.
Not checked for spark yet.
Sidestand You know what to do here 😉
Clutch switch = good! – I hope it works fine and it isn’t broken. If it is, easy replacement or check wires going to the harness.
Sparks = you will get there 🙂 keep us posted. Just make sure the clutch system inside the motor is good 1st and nothing looks off.
// Meditation doesn't mean you have to sit still....
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Getting some oil to replace what i take drain when i remove the clutch this wk end (weather permitting) would this Castrol oil be ok to use for now? (Cheap and i can get it tomorrow rather than waiting) will upgrade oil if/ when it’s running
I have the chain for bike it’s just not on as owner took it off to deter bike thieves. It worked as they left this and stole his other Hyosung 125 and burnt it out 😪
Thanks for all your help so far. Very much appreciated.
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Castrol = Change it after 500 miles. I really do hate that brand and with hyosungs Motul Ester or Silkolene Ester is a must and use them 2 forever.
Open the 125 , you will come to realize its the only one that has so many bearings, cams, valves, moving parts inside compared to a primitive 125 such as a CG125 that probs will run castrol oil forever without giving a care in the world 🤐
// Meditation doesn't mean you have to sit still....
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Castrol = Change it after 500 miles. I really do hate that brand and with hyosungs Motul Ester or Silkolene Ester is a must and use them 2 forever. Open the 125 , you will come to realize its the only one that has so many bearings, cams, valves, moving parts inside compared to a primitive 125 such as a CG125 that probs will run castrol oil forever without giving a care in the world
It’s only to use whilst i change the clutch and get it up and running. Then will be changing it again along with the brake fluid. Weather should be decent enough this week end to get the clutch apart and check it all over 👍
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I saw this on FB to, you know what i said. How far have you got on ?
Also it could be a couple hundred quid to rebuild a motor tbh (that’s anywhere from £100 to £600) based on labour and parts included. Currently i have 3 engines that i plan to spend some time rebuilding them to be fully running and several customer hyos.
So if a garage can do it, make sure they have experience with hyosungs , not cowboys that will take shortcuts and treat it likes it china.
Only 1 garage out of the UK i fully trust is Startrights Leeds Motorcycles as they are the oldest hyo dealer (if not, one of the oldest surviving lol) , tell them marcel sent you because Marcel said he may take extra time and he said you guys can quickly repair an engine in emergency situation.
That’s only if you call them and work it out. If not, send it to me and i will squeeze my schedule to work on that engine depending how pressed for time you are.
Don’t scrap it please.
// Meditation doesn't mean you have to sit still....
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- At the moment i’ve not really got any further apart from taken 1 plug out. Bit tight for space in the garage so can oy really work on it/ have a look when weather is decent and it’s light so time wise i’m limited. A lad i know thru a fishing club his dad has his own shop and runs a MX team so i’ve asked him for a rough cost just to have a look at it. I don’t trust myself stripping an engine/ gearbox.
- Time wise not really in a rush. I was getting this up and running to take my CBT on. Ideally ready for summer but not too fussed.
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Slight update. The engine is now out of the frame. I think i know why this bikes engines in a rough state. The entire bike doesn’t look like it been looked after. The amount of sized, rusted, missing and mis matched screws/ bolts is unreal. Seems everything is standard regard coils, leads etc. Carbs are still on as they didn’t look the easiest to remove in situ due to everything being rusted in. It could end up a bit of a money pit
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Bit of an update. I sourced a used working engine so i could moving with this. I still have the old engine so can get it all rebuilt. The oil pump failed causing a lot of damage. I will at some point get it stripped and rebuilt. Whilst the engine was out i stripped off the tape off the wiring loom, checked, cleaned and retaped the wiring loom. I removed any rusted/ siezed bolts from the frame and gave it all a general clean up.
When the working engine arrived i cleaned that as best as possible and fitted new stainless steel exhaust studs as the old studs were rusted and bent.
I fitted the engine and replaced the old vacuum lines, fuel lines, filter and removed the EGR System and fitted an EGR Blank all bought from Marcel. And fitted a new Yuasa Battery.
It’s currently running but i need to fit a new airbox as i damaged the old one when removing it 😖 and it has a fault when starting but i’m getting somewhere 👍
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Gt125R
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