gs1100g top end

[Matt_the_Rat]

Hey guys,
I got my gs1100gk barn find completely torn dwon. While I am figuring out a tank and seat arrangement I thought I would get the motor squared away.
I already did the carbs, and had it running. NO bad noise, no smoke, but plenty oil all over the head.
When I pulled the cam cover I was amazed at how clean it is. it looks factory new inside, no tan oi color, bright and shiney inside, and not even a hint of wear on the shims, or the cams. Chain looks great guides intact.
So.....
It's so nice I want to freshen up the valves. They are dirty, and the exhaust ports look horrible, but I think will clean and lap to near perfect, I have new stem seals.
I think I want to do the base gasket too.
if the cylinders are perfect I may want to just clean the pistons and put new rings.

Anybody recomend a seller for engine parts?
IS there somewhere Online I can get a copy of the manual?

[dr_fosg8]

Online manual may or may not be available through the bikecliff site. Clymers has a manual for the bike and factory manuals show up on ebay time to time.

Oem parts are widely available. Some through z1enterprises, G&S suzuki, and Boulevard suzuki.

[7981GS]

Cliff added my GS1100G manual several month's ago.
Check his site for a free factory manual.

Eric

[Matt_the_Rat]

Alright! Thanx guys.
I got a cliff's manual, and it is amazing how goodt he top end is. but I got low compression. So I am going to pull the head and jugs and hopefully just put new rings, clean and lap the valves, and new gaskets.

[chef1366]

It's common for engines that have been sitting to have lower compression. I'd do a valve adjustment and go ride the heck out of it to reseat those rings.

[koolaid_kid]

chef, I think you are right on the money. I'd certainly put some miles on it first before deciding to tear down the top end.

[Nessism]

Agree. And there is always crud on the valves. It's 100% normal. Remove it and it will be back in short order. Run some Seafoam for a few tanks if you are worried but I wouldn't take the engine apart for that. Regarding the compression, have you adjusted the valves yet? Please tell us you are not checking compression before adjusting the valves.

[Matt_the_Rat]

All good advise, except for one thing,
the bike is in about 106 pieces.
I'm gonna pull the head, I've got a little leakage around the head gasket, just a little.
The valves are all adjusted fine. I pulled the t chain tensioner to figure that out, and reinstalled it just to make sure the chain would tighten up right and it did with just a little bit of adjustment left on the tensioner.
so hopefully the head will be off today, and I will cover the pistons with tranny fluid and see if it leaks down, and go from there.

[koolaid_kid]

If you pull the head you might as well pull the cylinder block and do everything you outlined.
Best of luck.