Help: need two valves replaced on 83 gs550L

[Guest]

Looking for a few input valves for my 83 gs550L, is there any from other bikes that would be interchangable? Suzuki said these are discontinued valves and I'm having trouble finding replacements.

I can't seem to upload photos of them, sorry! :/

[Cyrano]

here's the part number you need 12911-43400

Still available from ebay (5 available)

[tom203]

Why just two intake (input) valves ? Did you misplace originals?

[castheandra]

here's the part number you need 12911-43400

Still available from ebay (5 available)

Thank you kindly!!!!!!!

[castheandra]

Only two were corroded so much they are complete warn down

[tom203]

Only two were corroded so much they are complete warn down

I have to ask.... Same cylinder?

[castheandra]

I have to ask.... Same cylinder?

Yes they are

[tkent02]

Burnt, not corroded. Better fix the cause of that or the new valves will burn just the same.

[castheandra]

Burnt, not corroded. Better fix the cause of that or the new valves will burn just the same.

guhhh, i'll add that to "everything that can possibly go wrong, most likely will" list.......what do you think would be the cause of burnt valves?!

[JJ]

guhhh, i'll add that to "everything that can possibly go wrong, most likely will" list.......what do you think would be the cause of burnt valves?!

First thing look at is valves not being adjusted, and not closing completely. That's the most common cause by far.

[barnbiketom]

Close second reason is LEAN CONDITION.... air leak/intake orings/poor running from plugged carb jets..or pod air filter's without proper jetting or even no air filters as on "bobber" lol