so... i have a seized engine on my nicer GS...


im fixing up the newer/worse condition GS to put around town...


but assuming i spend 1000$ to fix up my other engine (seized) would can be done and where would one start?

i figure the bike is trashed but if it RAN it would be worth 1000$ to me,.....

i was thinking about making it a 500CC sleeper of sorts but never got around to it...

and while the case is split and heads are off i figure this is prime time right?



and on a side note... with a seize block i was told takeing it aprt and then hammering the crap outa it would break loose the semi welded parts.... true? if not whats the proper way?

buy a used engine for half that and send me the other half
for good logical advice

or
speeds a question of money . . .
how fast do you want to go?

if you want to go faster than 120....buy a faster(different) bike

Quote from: starshooter10 on February 17, 2009, 07:43:08 PM
so... i have a seized engine on my nicer GS...


im fixing up the newer/worse condition GS to put around town...


but assuming i spend 1000$ to fix up my other engine (seized) would can be done and where would one start?

i figure the bike is trashed but if it RAN it would be worth 1000$ to me,.....

i was thinking about making it a 500CC sleeper of sorts but never got around to it...

and while the case is split and heads are off i figure this is prime time right?



and on a side note... with a seize block i was told takeing it aprt and then hammering the crap outa it would break loose the semi welded parts.... true? if not whats the proper way?

You might look into a non seized engine. Get a used one if you can from a forum member or a local salvage yard. You'd probably have more luck that way. If you want to rebuild it, people have done it and there are even some great photo series posted recently of the whole process. As far as hotroding it, you could look into boring out the cylinders like some have done with their race motors...

um. i proablly SHOULD build a bike that'll do 120+ BUT...


i would like a bit more HP =-P

as far as a bigger bike... meh

im working with a guy right now to buy his old kawi 600 hehe

but i'll keep the GS as a project to hotrod this engine OR to swap in a honda engine i have

My winter rebuild will include boring the cylinders to 541cc with the 78mm Wiseco Kawasaki pistons mentioned by Dgyver here: http://gstwins.com/gsboard/index.php?topic=14401.msg123943#msg123943

Quote from: 5thAve on February 17, 2009, 08:13:44 PM
My winter rebuild will include boring the cylinders to 541cc with the 78mm Wiseco Kawasaki pistons mentioned by Dgyver here: http://gstwins.com/gsboard/index.php?topic=14401.msg123943#msg123943

Dude, isn't winter almost over? You'd better get moving...

yeah i think i might have to drop in some 78MM's

but i wonder what that does to the engine balance....

and while it's being bored out and im installing new pistons think it's worth doing cams and valve springs (15k anyone, lol)

im already 90% sure im gonna have to boure out my mains =-/ whats that gonna run on average?

buy a different engine if the cases are that bad

Best power upgrade 1) remove gas cap 2) Movegas cap to new bike 3) call new bike a heavily modified gs500.

rolfs....


nah i already have 5 bikes >_<

i think i need to fix up the ones i have and sell off the ones i havnt riden in 3+ months

Quote from: qwertydude on February 17, 2009, 09:42:52 PM
Best power upgrade 1) remove gas cap 2) Movegas cap to new bike 3) call new bike a heavily modified gs500.

Hahaha... I like that one!  

Oh and as a reminder... you may be able to polish a turd... but in the end.. you still only have a shiny turd. To get any true performance out of these bikes start with suspension and tires and then work your way to the motor.

130 on stock springs is a HUGE HUGE HUGE NO NO on these bikes... Heaven forbid you need to take a turn at that speed. Good luck holding on.

Just go for the basics like everyone else.

1. Progressive springs/Katana rear shock or even a Works shock or Penske shock if made to fit.
2. Good f*&king tires. Pirelli, Conti, Avon, anything but those God awful Bridgestones.
3. Exhaust (Do what you want, there's no real restriction there except for the muffler... you won't even have to re-jet regardless of what you do.)
4. K&N Pods or Lunchbox
5. Jetting and needle mods: Stay away from the DYNOJET kit unless you want an "on/off" switch for a throttle. 2 washers on the needles. (#3 or 4 stainless)
6. Go up 2 or 3 teeth on the front sprocket.

Depending on what size rear tire you run (150.70's are the max) you should be hitting about 130 with decent low end.

But... um... why? I don't recall there being any posted speed limit of 130 in the US... SO... why not just keep it stock and ride it? OR.. do all those mods and throw a bigger rear sprocket on it...

At least that way you can wheelie and burn out and accelerate faster than some of the bigger bikes out there... and since the GS is a 6 speed you really won't notice much difference unless you're doing a lot of highway riding.

.... nevermind... lol...

Do straight pipes, Knock off K&N's and jet the hell out of it... lol... it'll be fun no matter what you do! Just post some damn pics!

78mm pistons, bored out mains, balanced crank........... yeah yeah yeah heard it all before. What happened to this big idea and all the promises?.

Dream on 

http://gstwins.com/gsboard/index.php?topic=45934.msg515353#msg515353

Seized engine - scrap it. Plenty of used engines from bent bikes out there that run - for cheap. My whole GS with running motor cost $1000, though it did have an incredibly budd-fugly paintjob that probably took $200 off it.

Hotrodding a GS. Move gascap or GS500 sticker to a GSXR or something - yeah, that's the ticket.

Put your working engine in the nicer GS, then play around with the other chassis and different motor options, if you really have spare time. Or just put a working motor, no hot-rod-fuelishness involved in the nicer GS and sell them both if have no time to play, or sell one and ride the other.

If you really want a go-faster GS, do all the suggested chassis/suspension mods, and shoehorn a whole different motor in there. But consider that perhaps you should be starting with a chassis that does not need the suspension help if you're planning to go faster.

Things I'd do with a dead motor, complete chassis GS if I had one and time (but read to the left) - Hybrid GS / Diesel-electric GS / Diesel GS / Thumper GS / 350 GS / Briggs & Stratton GS / steam-powered GS etc...

There was a thread a while back from one of the Aussie board members.  Over a set distance, he measured his top speed after rejetting, adding an aftermarket exhaust, and going to a K&N intake. 

Conclusion:  You get a miniscule amount of power by doing those mods. 

You've got it right, you'll have to do something significant to the engine in order to increase HP.

Quote from: Juan1 on February 18, 2009, 12:57:41 PMyou'll have to do something significant to the engine in order to increase HP.

And if you do something that does significantly increase power, on the GS engine, the GS engine won't last long - it's not made to take a lot more load than it gets - so you pump it up, and then you wear it out. Just start with a different motor...

polish a turd still a turn i know i know...

but this is also a personal project an EX MSF bike that was beat to all hell looked like shaZam!

now looks great but dosnt run

i have alot of crazy idea's and i still want to put the 750 into the GS

but im worried about the weight on the front.

If you put a bigger motor in, depending on your size you could always go up to a .90 or 1.00 straight rate front spring setup and run 15w oil about 4.5 inches from the top of the forks...

Or upgrade to a Katana front end... which you might want considering dual calipers and all.

im about 250 lbs...

im hoping that when i get a GF again (my last and i split in dec) that i'll start riding 2 up again