jumped timing? please help!!

[roux1100]

so here's the deal. i have a 82 gs1100gl, had it about a month now and it's been my daily rider. it's been making a clanging sound and i wasn't sure if it was valves or cam chain. well the other day i started it and it ran for about 10 seconds at about 1k rpm and died. i tried to restart it and it wouldn't start, it only made a really loud pinging sound, like metal on metal. i put in in gear to see if it was the starter or not and when i hit the start button the bike would move so that should rule out the starter. then i put my hand over the exhaust and it is sucking air as it tries to start. my understanding is that this means it's a timing problem, correct me if i am wrong. with that being said, i'm assuming this means bent valves among other things and possibly broke tenssioner. me and a buddy of mine have motor experience so we we're going to try and look at it ourselves. i also have a clymer manual for my bike. i'm looking for answers like what do you think has happened, what has probably broken and where do you recomend buying parts?

any help is greatly and extremely appreciated, i want my baby back!!!
thanks, roux

[Big T]

Pull off your valve cover and check your cam timing

[Suzuki mad]

Pull the rocker cover, pull the plugs, check the clearances and movement while spinning the engine with a socket and bar and checking for the valves/buckets to move, tight valves.

Count the cam-chain from the timing marks and measure against specification.

Worse case the lumps toast as the chain/ inner tensioner had failed or a valve has dropped (I've never seen a GS do that but others might.)

[BassCliff]

Greetings and Salutations!!

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Thank you for your indulgence,

BassCliff

[Steve]

... or a valve has dropped (I've never seen a GS do that but others might.)

Does this count?





Came from this head:



#3 exhaust:



Fortunately, it happened at hand-cranking speed, while checking valve clearances.
See that ONE little dent just above the seat? That is where the tip of the broken valve hit one time.



.