what rpm is safe for a lc engine

[k50]

my new super 9 lc is derestricted and has a technigas pipe.  i dont think the carb was touched.

on the flats i can get her going 50 but the rpm's are at 10k, is it ok to run the engine this fast?  if so, for how long?

i understand that with the liquid cooling it protects the engine more than air cooled, but 10k seems pretty fast.  and down hill, it may even go 11k, i never pushed it to that limit.

thoughts?



 

[chaz35]

I suggest you look at the plug, do plug chop, see if running lean.  I think OK to run hard if not too lean.  I turn approx 10,000revs fairly often, but not for long.  I don't worry about it much, but will wear out engine faster.  These engines are fairly easy and cheap to rebuild IMO.  When cruising, I like to keep it around 9,000revs or below, with my CVT setup is approx 45mph, a good speed for where I ride.

[Rage]

I ran mine at 10k+ rpms for about 2 years and 20-40 miles a day. Finally blew head gasket

[beermak]

Id worry more if its lean at high rpm or if it has not enough oil...
then enjoy it and dont worry on rpms




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