Looking for Piston Rings - 1982 GS 400 E

[Rob]

Thanks for the assistance,

My bike mechanic actually came to our house and looked at the cams. He believes that the cams look good, at least for 35k.

This is only an issue when things get hot.

When it is cold, it starts first crank, no choke, and idles very well for several minutes.

It is only when it has driven a KM or two.

Thanks again

Rob
1982 GS 400 E

[tkent02]

Before you take everything apart, have the valve clearances been set correctly? Running well cold and not well hot doesn't sound like a valve issue, but it's worth a try. I have fixed a LOT of "dead" GS engines by adjusting the valves.

Not sure about your oil in the air box issue either, how much oil is in the engine? There shouldn't be enough oil in the top of the head to fill an airbox. Something is wrong here. Could be a gallon or two of fuel got into the oil and the engine is seriously overfilled? This is common with a failed petcock.

Before you tear it apart at least do a leak down test.

It could well be broken rings, but I would make sure first.

[Rob]

Dear All,

Thanks for the awesome assistance.

Anyone can tell me the proper valve clearance for the intake and exhaust?

I just did some checking on the bike, and some of the tappets have NO clearance at all even stone cold.

Any thoughts or info would be great!

Rob
Suzuki GS 400 E

[tkent02]

I don't know the spec on your engine, but no clearance will burn valves.

Someone here will have it, have you looked for a Suzuki service manual on Cliff's site? If not there you can get one on Ebay or Amazon. Don't use Clymer's, they are wrong on the valve procedure on other GSes.