How bad are these valves?

So I've been tearing apart my bike and cleaning it all and giving it a good once over.

I took the exhaust off and decided to look at my exhaust valves, do you think I should tear into the head and see what the intake valves look like as well? Or does this look like an acceptable amount of carbon? I'll definitely be running a richer map from now on.

Front:



Rear:



Also remember to change out your bag filters!




Does any one have a spare rear cylinder exhaust tube? The short one that connects to the headers, mine snapped at the flange when pulling the headers off.

Horrible, you need a new bike. I'll buy this one for $1200, and that's me being generous!

They look nasty, but my car valves probably are worst.

I've got a TFSI (TSI) engine car which PCV valve redirect the oil carter gases to the air intake and dirties all the intake & valves with shit.

I've seen in VW and Mazda forums that people uses a product to decarbonize the valves called "Seafoam" and i'm gonna try with it.

Probably I bought 2 bottles and prove one with the Superduke.... anyone used this product in his SD?

Cheers!!!

Daaang that is a lot of build up. At least it's black soot though and not super hot carbon deposits.

Thanks for the video link Steve, watching it now.

If you are looking for a short back pipe or any other used parts in good condition at reasonable price look up rubbersideup.com