bottom line, if stuff is banging around in the crankcase, it's really, really bad news. Hate to break it to ya, but unless you are a professional mechanic, you should probably replace the engine. Even a professional mechanic would probably realize that it would be much, much easier and less hassle to go ahead and replace it. Start saving, if you're lucky, you can find a decent engine for around $300 in a 500 mile radius.

Graham 

Yeah, cheaper to buy and replace with a used than to try to rebuild.

Quote from: Calpantera on June 18, 2013, 01:57:44 PM

Quote from: The Buddha on June 18, 2013, 01:36:52 PM
If you have cold air enter the head when you shut it off you will warp or bend a vlave. That will cause it to break off when you start it up.
Of course I have never ever seen it happen on a GS, even when Davipu cut it off 6" before the Y part and ran it east coast to west coast and back in the span of 2 weeks.
I also am not sure the my Idiot friend had that as the primary reason ... he was sucking air in the vaccum fitting in teh carb, and had a hacked off exhaust on his savage and I met him years after he had broken it.
Cool.
Buddha.

IMHO this is an old wives tale (Is that the proper term there?)

Supposedly the theory is that cold air will warp the valve stem on the exhaust valve because it causes it to cool to quickly, I personally have run open headers on far too many engines in my lifetime and have never had an issue. Heck I have even ran open heads on an engine once and the only thing that happened was an engine compartment fire. I used that same engine in a different hot rod and ended up blowing the bottom end and not the top end. The closest I have heard of anything like this happening is to a friend of a friend's boat, but that was caused by a faulty water cooled exhaust that sucked in water and warped a head and possibly a few valve stems in the process. Again JMHO..

Straight and shortened, increased/reduced diameter pipes/headers effect the scavenging rate, to much/not enough exhaust gets drawn out during the overlap, and too much air can get drawn in, this can screw up the A/F ratio of the charge and can cause lean running, lean running increases combustion temperature and can cause valves to overheat and fail.

Ever wondered why a rejet is often needed with an after market pipe?

I'm also in Jacksonville (by the Avenues Mall). If you need a hand replacing your engine, I may be willing to help depending on the time frame of things. I will have a garage at my new apartment at the end of next month that would make things a lot easier for wrenching.

I would go ahead and scrap the old one. There is probably way too much internal damage to try and salvage anything. You can find them for pretty cheap I'm told.

just not on ebay currently.

Quote from: floridaboyz on June 18, 2013, 05:10:22 PM
i only redline every so often and my brother in law tld me i might only have to rebuild the top half and it would probably be like 400 bucks is tht true?

If you got banging noise even if its a broken valve you still need to rebuild the bottom end ... why ... your bottom end bearings have got beat up with the valve stuck in the piston and hammering the head ...

BTW does your spark plug look like its been beat to hell ... dead giveaway valve broek off ... you also can look in the plug hole and look for busted bits of metal.
Cool.
Buddha.

Engines can be had if you watch ebay and CL.
Over the past I have had engines for free ("...just get it out of here I'm moving"), $200 (failed rebuild), $300 (parted out) and other prices. You have to be patient. If you want it NOW you may have to pay extra - up to $700.

One source for engines is a failed project or crashed bike.  Watch local ads and C.L. Use a variety of search terms. It can be "gs500", "gs500F", "gs500e", "gs-500", "gs 500", "gsxr500" and others.  People call them different things.

Quote from: gsatterw on June 19, 2013, 06:34:51 AM
just not on ebay currently.

Just no cheap ones on ebay you mean.

Dang well tht really sux so u think if its a broken valve it would be cheaper to just buy it then get a whole new engine

I am surprised no one has addressed the water issue. Does your pipe have a drain hole? If not, did you run the engine before you noticed that your exhaust was full of water?

Bummer about the engine bud. As if you needed another person to say it, I agree with looking for a new engine. A swap isn't nearly as hard as a tear down. Less time consuming and also, usually cheaper.

  -Anthony

Quote from: floridaboyz on June 19, 2013, 03:06:48 PM
Dang well tht really sux so u think if its a broken valve it would be cheaper to just buy it then get a whole new engine

IF ...... It were a broken valve, you would have pull the head, check it and the piston and see the damage. If it's a bearing, replace the engine IMO

Quote from: floridaboyz on June 19, 2013, 03:06:48 PM
Dang well tht really sux so u think if its a broken valve it would be cheaper to just buy it then get a whole new engine

read this about 15 times and had no clue what you were trying to say before i realized you meant 'than', not 'then'.

I'm just subscribing for the eventual translation, grammer nazis, and punctuation lessons.

well, the engine is toast, might as well learn somethin

well i pulled a plug yesterday and it wasn't even fouled so whats that mean oh and do u think me buying it used from a motorcycle shop like 2 months ago they would fix it

No harm in asking the shop, but it seems unlikely unless you have a warrantee.

Have you tried re-filling the oil to the proper level and starting the bike again? Chances are the engine is toast if you ran it dry, but if its already dead you might as well try.

no i havent tried filling it back up i thought why waste money if its done for anyways but heck i guess ill give it a try

Quote from: floridaboyz on June 18, 2013, 01:32:33 PM
weedahoe im in jacksonville and i can crank the bike and it will idle but it sounds horrible like its about to blow up and a loud beating noise like i said when its running hard to explain kinda like a huge piece of metal is in there jus slinging around hitting the motor case im scared to run it anymore to listen for the noise im hoping it isnt a blown engine as i dont have the money to replace it and the worse part is its my only vehicle it sux walking

hey fill it with oil and start it up. get some good video of the bikes last run before it pops.

buy an engine from ebay for 3-400, and laugh when you upload the video to youtube. its a learning curve, you found the rise !

well i tried to run it today it kept shutting off on me and the bangings still there wtf man this sux i got some short footage of the noise tho

Have you been able to upload it yet?

  -Anthony

I can't find out how