Starting bike in winter in garage?

[itsafatboy]

So how bad is it to start bike and let run for few minutes in the winter time , but not go ride sometimes want to start for guests but dont want to hurts bike since its not getting all the way up to temp.

[kd]

If the engine does not reach operating temperature for a reasonable period of time there will be a condensation build-up in the crankcase and heads.  The extended running time allows the condensation to vaporize and evacuate the engine in the venting process.  If you have ever seen the sludge in an automotive valve cover from a vehicle subjected to short trips, that's what you will be accumulating.  This sludge is very acidic and capable of etching the crank pin and rollers as well as many other components. 

[smoserx1]

No need to crank it up in the garage to impress your house guests.  If you want to crank it up then go for a ride.

[Hossamania]

It's a terrible practice, for the reasons mentioned.
Having said that, mine has occasionally been started for guests while in winter storage. Even revved up a bit while too cold. On a carb bike, no less. (Watch this!)
Also got a couple visits from the local cops telling me to knock it off since it was after midnight.
So, don't do that.

[FSG]

It's a terrible practice

 

[Jim Bronson]

It's a terrible practice, for the reasons mentioned.
Having said that, mine has occasionally been started for guests while in winter storage. Even revved up a bit while too cold. On a carb bike, no less. (Watch this!)
Also got a couple visits from the local cops telling me to knock it off since it was after midnight.
So, don't do that.

If they want to hear it, play them a video of your last ride -- sound and pictures too.

[speedzter]

Yes it's a bad practice, will it kill your motor, no !
Just don't run it for long, and
Not often .

[billbuilds]

    Resist the temptation... your motor will appreciate it.

[Hossamania]

Delete

[itsafatboy]

Thanks i figured i was going to get a big NO so no starting , i would ride but oregon raid and i dont start out in rain

[fidel]

just a good reason to open it and new piston  crank cam clutch nothing crazy