Do you consider 87 too low? All my bikes have ran exactly the same on 87-91 pump.
4 stroke durability
- Thread starter Kyle
- Start date
your also not raceing GNCC on a ltr400.................. And i have always ran at least 91. Call me crazy but i can tell a difference
Melted the piston into a chunk of slag, destroyed the head, and cracked the cylinder all the way through
James
Staff member
If there was no knocking, it wasn't to low.
James
Staff member
how would that work? Some cars can go 300,000 miles without developing sloppiness. I know they don't rev as often or high but I bet the piston has made more strokes than a bike with 50 hours on it... I think, I'm not really feeling like doing the math haha
I use a clean filter already every ride even if I only rode for ten minutes that day. I'm paranoid about maintenance because I will spend the little bucks to keep it running rather than neglect it and go down big bucks when it breaks. So your saying I should change the piston every X amount of hours following the operators manual, even if it is running fine when the time comes to change it according to the manual?
The engineers pretty much have this down to the exact hour. If your manual says 50 hrs you can get away with 60 or so hrs unless you are just hauling the mail. Same goes for the valves. There are a lot of nay sayers about how long you should run pistons and change valves but the manufacturer gives you a time table and a spec sheet for reason and they really don't just pull these numbers out of their ass.
different metals, higher revs, higher operating temps etc. etc. etc. get put into a race engine than your everyday passenger car, a 250f is more akin to a F1 car than a toyota corrola, the F1 car gets the motor completely overhauled every race. Which is real close to what Honda and the others recommend for a 250f thats ridden by a top level guy.
The general consensus that I've found on the internet (which people on the internet are most certainly never wrong btw) is that for us mortals a top end every 50 hours for a 250f is considered proper upkeep
They made 2 stroke diesels for semi's and loaders back in the day that go for over a million miles. Doesn't mean i can do that on my KX. 2 Completely different machines
we had one of those, it was a piece of
probably had a kawi crank and honda reed valveswe had one of those, it was a piece of
I'm guessing it was a suzuki based upon the fact that it never could keep up with anything elseprobably had a kawi crank and honda reed valves
I'm guessing it was a suzuki based upon the fact that it never could keep up with anything else
Challenge???
