♠️ M77
Forum Replies Created
-
Posts
-
I say get her and this forum is always open for suggestions and guidance 🙂
You will be okay to fix it , as long as engine isn’t blown up , it will be rescued 😉
The 2003-2005 650 bikes and ALL 125 GT bikes use the same grey TCTC caliper until 2020 for 125 and up to 2005 ish for older big sister bikes.
The black ones do not say anything but are much much bigger and have 4 pistons inside. The forks are black for a 650 with bigger spaced out gaps for mounting the bigger calipers directly
grey calipers use 2 pistons. and use a plate to mount to the 125 forks or grey old 650 forks (floating caliper) , rather than bolted direct to the fork leg.
Hopefully i made sense ?
Welcome to the forum!
You ain’t kidding, the 650cc and 250cc bikes are much harder here in UK to acquire. It is commonly the 125cc motorcycles we see in UK and EU that take most of the market share, so Korea keeps chunning them out lol.However, we do have some news though that new models are headed to both US and UK in regards to the 650, they are doing GV’s first as that’s their flagship vtwins (hence the GTs come years later , having used GV engines inside them!)
Surely there is a dealer near you that should be inporting the newer GV300S to us , as it’s already out worldwide since 2021 , if that’s the kind of bike you like.
As for GT new models , no news yet (and they know we expecting it lol) – Expectations may be high!
Yes, you are not crazy , it has parts inside as you mentioned.
We have the tap in stock on the shop, should you need it.
It is not meant to be opened as Korea never made rebuild kits for them but tap failures made in Korea are common , hence i don’t stock em, i have more faith in the uprated ones we stock, they never bothered.
Replace fuel filter & lines! {lest old debris in lines soon clog filter)
If your tank is empty , get air compressor , (remove the fuel sensor first!) , and blow all the debris out of it. No chemicals. required at this stage.
Thanks Marcel there black so I guess I will have to be on lookout for black caliper thanks
You can ask anyone around your area , that does metal fabrications, and a nice thick metal sheet, cut to shape using your old calipers as template, tap threads in to it, swap the caliper pins over , then bobs your uncle lol
Same principle applies if wanting to use genuine brembos , but get genuine brembos or 650 Hyosung master cylider as the 125cc resvoir and chinese ones do not have the strength to push big calipers. Safety in brakes fella!
Pipe in the red circle = It goes straight to the road. So it runs along the beam of the right hand side of the frame, then it guides itself down to the road via the clutch casing , near the swingarm pivot area.
So watch for the exhaust pipe doesn’t burn it. use zip ties if you need to.
It’s a pipe that ;
- Overflows fuel to the road if carb is flooding
- Dumps fuel if the bike fell on the road or in a crash.
Yes , but if the forks use black calipers , then get the 650 black calipers.
if they are old gen silver 650 forks, then sure you can use your own silver calipers already on it.
Regards
WOW!!!!!! – I WANT IT!!!!
If i can’t get it here in UK, then i must settle for GV300S Bobber which we have here in UK soil lol.
I will try to copy the GV250DRA – I did not get information about it, so i get jealous for Asia countries to get new models before we even get any information for us EU and UK people
Japan is near Korea, so it is probably easier for KR Motors to make variants in the EAST. Last time they did GV250DR – Even that bike is difficult to acquire over here…
Keep the information coming , I am very interested.
I think Hyosung must be inspired by the later models of Harley Davidson SPORTSTER bikes
Welcome back JP! – The GV with sidecar looks very good and i don’t see a lot of that nowdays, keep the pictures coming. I am inspired lol.
You are very welcome 🙂
Post pictures of her in the journal section once its all ready fitted and looking good for a sunny ride 🙂
Hey ,
Welcome to the forums and how are you finding the experience with the bike ?Sunny week, so take it easy out there also!
Sounds like it is time to copy all i said in my replies and it will start to behave more as we fix 1 thing at a time in fairness, we do need to know how the engine is 1st before addressing any other parts.
To save repeats , check my previous reply and let us know how you get on this week.
I hope you got home safe 👍
Hey,
The kickstand should be bypassed by basically bridging the 2 wires that go to the harness from the switch itself.No resistor required.
Cyl Drops can also be a signs of these (common)
- Stator Unit Wanning (rising heat has made its “pulse sensor” misbehave / ghosting)
- TIP Over Sensor (under / near the fuel tank yellow metal plate (since yours is a 2011 EFi , it should be DAEWOO or MITSUBISHI ECU (Korea is random like that)) , but any bike after 2012 is DELPHi system
Not that it matters right now but i do know stators acting funny make the daewoo ecu’s really moody. - Coils (on the frame)
- HT Caps (use NGK ones like we do, you never have to suspect caps ever again)
I hope it’s just the rear ignition coil system and clutch handle bar lever (yes the handlebars have a clutch switch on the clutch lever side, if it acts funny, it cuts sparks off instantly even while riding, i’ve been through it lol) – I would NOT bypass this switch.
Just my 2$
Are you able to get access / ride to a garage (even a car one) and tell them this….
1. Allow motorcycle to be least 20 minutes hot , from ice cold.
2. Remove both spark plugs (just lift the tank for the rear nicely
3. Put a compression tester in the front cylinder plug hole.
4. Leave rear cylinder alone (make sure it has no spark plug in it (as per Korea’s instructions)=-=====
Press Start.
Hold bike on full throttle for 5 seconds.
See what the compression gauge says.Then repeat the rear engine cylinder.
Come back to this forum and let us know the psi of each cylinder as it is crucial we get the engine out the way first.
===== If plugs are out, run to halfords and fit only the normal “CR8E” and see if the bike behaves better ?
Don’t buy IX and don’t listen to the mechanics suggesting it. Hyosung GT125’s don’t like “IX” plugs (Blue Box) . So i’d suggest only CR8E (stock yellow box) or “LASER” type (ones you see at this shop)
Also read this topic below, it has a lot of insight for you. DEFINITELY MAKE SURE THE FLOAT HEIGHT is 7mm
Unsure? Just replace the floats with new ones and get carb rebuild kits (that contain new float seats and new needles) = That will make sure the float assembly is working properly (bad floats close early , bike starts to drop back speed rapidly and cuts off, because the jets don’t reach all the way to the bottom and carb is upside down too!) (Sometimes O-Rings on the “gold float seats” can brittle away, and actually leak droplets of fuel through even after the floats have shut off the valves so to speak, this called an internal leak, too much fuel incarbs will bog it down too)
Mixtures = 2.5 turns out (full circle) each pot and leave it alone forever (yes forever) , if the bike has other issues, still leave the mixtures alone forever 😉 ….way less stressful this way.
Let us know your progress, excuse any grammatical errors in my replies, if i haven’t made sense, just quote me to explain again in different way 🙂
Korea didn’t reveal the mixtures due to fact their GT bikes always leave their factories fine tune to suit the clearances they set their engines at aswell.
So a general rule of thumb is that lower than 2 = new piston rings / more than 4 = no effect , wastes fuel. That is full turns from closed.
I’d try and get a compression test done 1st to see how heathy the engine is , it would defo help a ton. Report back to us what each PSi the pistons are when the bike is warmed up for least 10mins from ice cold.
if we know how the engine is , then its easier to fix the rest. You will find that half the “troubleshooting” pages Korea puts at service manual for carby bikes they always say “Valves too tight, engine compression too low, head gasket issues” (these in effect also make the carb act poorly in return as it needs the engine to draw it)
Hint = A very happy hyosung idles 1,000 revs from ice cold , without any choke assistance (that means electronics all good, fueling system everywhere from carb to tank is all good, and engine is in spec by measuring it)
Sounds like ignition coils on their way out
BUT!!!
Sometimes the stator works and when the engine gets hot , the stator starts to wane , causing the pickup sensor to act haywire and as such if the ECU isn’t getting consistant signals from the pickup coil inside the stator, the ecu tells the bike to wind down or cut off. In somecase it is either the coil or stator that makes starting very difficult.If it is running, i would also caution to keep an eye on the ET sensor (Engine Temp Sensor)
(Test temperature related sensors as with the rules from the service manual to see if they are in spec , both hot and cold)Strange that its not throwing error codes , try to unplug ecu for 24hrs , and take battery off. Then retry , if problems happen , the ecu should store an error inside until you trick it next time for it to show up again.
Hope this helps but keep us updated!
Will keep an eye on this thread , you will never know , there is always a niche market for something!
Shared on UK FB group.
You can still attach pictures on this site,
Just click “Add Media” on this white reply box below as you type 🙂
They are heavy but surely you can’t keep her ? The weight is nice to keep us all planted on the road.
I like the idea of “blanks” , will speak to a contact in supply chain to see if they can do a “blank kit” that supports both GV and the GT due to varying airbox sizes and will list them separate for shop if people need them
This is because i’ve leaned most people actually cut a short hose near the intake pipe and stick a bolt inside with a metal zip clamp tight. Job done! Cost = £0 and finding scrap bits in your shed lol.
