Will an 82 GS650 engine fit in our GS500?

[Jackstand Johnny]

Theres one for sale near me for $100(The wole bike, no title, no ignition jey). I thought I remembered someone saying it would fit right in. Any power gains from this swap?

[Beelzeboss]

Don't know if it will fit, but google says that it has 73hp. So from the 47hp of the GS you will notice a significant power gain.

[Jackstand Johnny]

From what I read it seems like it would work with a little modification but I'd really like someone to clarify. Id do it in a heartbeat if I knew I could almost double my HP. BUDDHA,,,WHERE YOU AT?!!!

[makenzie71]

Nope...the frame's not long enough for you to put the motor in sideways.

[Jackstand Johnny]

Is there any other engines that fit in th GS without redesigning the whole bike? I could swear I heard about that somewhere on here.

[makenzie71]

It is now official...the 250cc V-twin from Hyosung will fit into the GS500 frame with minimal modification.

My absolute FAVORITE motor ever put into a GS500 frame was from a CR500R.

[Lukewarm Wilson]

It is now official...the 250cc V-twin from Hyosung will fit into the GS500 frame with minimal modification.

What about the Hyosung 650 motor?

[Bluesmudge]

Probably not. The 250 fits because that Hyosung is using what looks like a GS500 frame, intact a lot of the hyosung 250 parts would fit a GS500 with some modification.
The 650 is completely different.

[makenzie71]

I can do it with a lot of modification haha.  The frames are completely different.  The 250 engine fits in nicely because the GT250 is based strongly on the GS500 chassis.  Just about any 60~90* V-Twin should finagle into the GS frame pretty easily.  The biggest limits for foreign engine swaps is the simple width of the frame.

[Jackstand Johnny]

Why would anyone want a POS Hyosung engine in their bike anyways?

[loki7714]

Why would anyone want a POS Hyosung engine in their bike anyways?

Lol that's what i was thinking 

[bobthebiker]

Why would anyone want a POS Hyosung engine in their bike anyways?

+1 on this.  

hyosung is just knocking off real Suzuki bikes with their cheap garbage.     they're just like yugos. same friggin thing all over again, but with bikes.  

the GS frame would be VERY fun with an RD350 motor stuffed in, bored over a little, some high performance pipes built for it, and some REALLY awesome gearing.  make a fun little lightweight.

[makenzie71]

rofl...I love it when an item is termed "junk" or, in this case, "pos", just because it's based on a "name brand" company's item.

Considering the GT series has been successfully sold all over the world for five years without a major recall or mechanical problem (something Suzuki failed to do), I'd say it's a bit above "pos"...it's actually hilarious that the only real recall the bikes have had is a fueling issue that plagues the GS500, only Hyosung fixed it.

[bobthebiker]

and yet I've not seen more than three hyosungs on the road here, for every 1000 japanese bikes I see.     I constantly hear that right around 12k miles the POS hyosung 650s blow up.  their 250s are probably a pretty much from scratch motor design and may be a bit better.

[makenzie71]

Hear say, maybe?  My brother's uncle's cousin's nephew's dad's bff's kid's pet dog says he sees a lot of shaZam! but that doesn't mean I'll believe it.

Of course you're not going to see many Hyosungs on the road...shaZam! man they're produced at 5,400 to 1.  You'd be lucky to see three for every thousand, though you honestly do exaggerate.

The GT engines are reliable at 12k if they're taken care of.  Give me an SV650 and I'll trash the motor in under 5k.  Not really trying to stereotype anyone, but the typical Hyosung buyer is a cheap, uneducated motorist that will trash any bike, and the bad ones you hear about are more often only heard because people get loud when they feel they've been wronged...just like the douchebag that made it a vendetta to get the nation as a whole to consider the Buell Blast a "lemon".  Your doubts are your own issue, though, and you won't see anything else unless you look.  If you are, in fact, interested in seeing proof to the alternative try looking at aussie and asian forums where the bike's are sold in higher numbers.

[bobthebiker]

are they built to the same spec as US models?     My MAJOR complaint is they just look unfinished to me compared to a jap bike.

[makenzie71]

the overseas models are identical to the US models.

The GT's have a good fit and the paint is pretty decent, but yeah, you won't see the same smooth casting and such that you see on the Japanese bikes.  That's another process, which costs more, and the whole point behind the GT series was to offer a similar bike at a cheaper price. 

They have been getting more expensive, though, and with that their finish has gotten better every year.  I've seen the new EFI GT650R and it looks pretty nice and, even sans the finish, the GT250R still looks better than the Ninja even after Kawasaki's update.

[Jackstand Johnny]

Ya know the thing with those recalls is I'm sure Hyosungs standards may sag a bit lower than a company like Suzuki, leaving a great deal more Hyosungs on the road, and a lot more Suzuki's to make it right and keep their customer happy. It could also have alot to do with codes and laws specific to the manufacturers region, and not so mych their code of ethics.

Ive also HEARD that Hyosung engine are a pain in the ass to work on, and I get my fix of that from my Toyota's. IF only there were a reliable source for this "uneducated opinion".......

[makenzie71]

There's at least one member here who owns a GT650R.  I know three, personally, and have only heard complaints about the brakes...an issue fixed with braided lines.  A GT250R is in my future...I'm sure I'll comment about it frequently.

[The Buddha]

GS650 is a 4 cyl, you want GR650 and I doubt any real gains are going to be had with that. Its 1000 rpm lower redline, and it prolly will be torquey, but who cares ... its prolly a heavy pig. Sorta like a harley sportster. torque, torque and more torque, but no revs and no power.
Cool.
Buddha.