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Intake port

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Howdy, thank you all for the information shared on this forum! Ive been diving in for a few days... New to me 1980 GS1100 with Vetter sidecar 24k miles, sitting since 05. I am in process of rebuilding the carbs, it did start, but did not run well. With the crabs off looking into the port it looks pretty dirty, pic attached. Any way to clean this without disassembly or should I not worry about it?
Thanks again!
 

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ASSUMING the valve stem seals are ok and you're not planning a top-end teardown, dose your gasoline with Techron. It's one of the very few fuel additives that actually works and does what it claims. Within a few thousand miles that crud will be gone.
 
Thanks Dave,
Valve stem seals would be in order for a motor to be setting this long? Other seals too then...
 
I don't mean to distract from your question, but let's see some pictures of the bike and that side car!
 
Hey Danger, you won't know about the (any) seals till you get everything going. Couldn't say anything needs replaced till you know.
 
Just wondering if the carbon build up is common...

Side note tip or trick, I had to easy out a pilot screw and wanted to chase the threads. I didn't have the right tap so I made one out of the pilot screw that was in good shape. Can't cut threads but it will clean them up...
 

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Last edited:
Danger said:
Thanks Dave,
Valve stem seals would be in order for a motor to be setting this long? Other seals too then...
Click to expand...

Normally, at 24K they would be ok, but time takes its toll on them too.
As said by rphillips, you won't know until you get it going and under some normal running conditions.
Might be fine, but might need more attention. The other seals are generally quite long-lived on these engines.
What kills a lot of seals (general observation garnered from a wide variety of machinery) is sitting for long periods when the knife-edge of the seal micro-bonds to the shaft and tears on initial dry start-up. There's nothing much you can do about that.
 
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