Maxed Out RPMs: Problem??

[flyer34]

I think connecting rod damage wouldn't be very likely unless you dumped the clutch while bouncing off the rev limiter.

Valve float also shouldn't be an issue unless the engine is rather old and the valve springs have relaxed and/or the valve lash is out of adjustment.

There are generally two types of rev limiters on fuel injected engines: ignition-based and fuel-based. Fuel based rev limiters simply shut off fuel supply momentarily, resulting in an extremely lean mixture that can lead to detonation. Fox-body Mustangs had these and they caused problems. Ignition-based rev limiters shut off spark, which has a much more benign effect on the engine. I don't know which one the FZ6 has, but I would wager it has an ignition-based limiter.

A well-tuned and maintained engine shouldn't have any problems operating at max rpm. If it did, they would reduce the redline at the factory. Just don't dump the clutch while it's bouncing off the rev limiter. Max hp and torque usually occur well below max rpm, so there's usually not a performance reason to operate there anyway.

These are just my thoughts.

[cashcrzzy]

Here is a good read ,, take note the best reason to have a rev limiter LAWN TURFING lol .. HAHA THE STORIES I COULD TELL YOU ABOUT THAT LOL
Rev limiter - Wikipedia, the free encyclopedia
I have worked on allot of engine`s in my time and have NEVER seen any damage done by JUST HITTING the rev limiter ... Now on older engine`s the engineers had no idea how to build them and valves were sloppy in the guide pistons floated around in the cylinder bore all the bearings were way too lose ,rods , cam ,mains the engine was so sloppy if you even came close to hitting red line :Note There Were No Rev Limiters Back Then : you COULD do damage . The tolerances are so tight in the newer engine`s the risk of doing damage is very slim unless you are in a no load situation . I am in no way saying to you to rip the limiter every time you ride .It is just another tool to stop the stupid people from destroying a work of art.
Greg A.
I Don't think The Question was never answered How many miles on your bike !!

[sportrider]

I think worrying about the connecting rods would be the last thing on your mind if you dumped the clutch while sitting on the rev limiter!!!

I hit the rev limiter fairly regularly... oh.... maybe thats why my bike is in the shop...



NOT
I can't wait to hear how it sounds on the rev limiter with my new stingers!!!

Originally Posted by rsw81

The sudden change in acceleration/deceleration associated with bouncing off the rev limiter puts a lot of strain on the timing chain/belt. This can cause the chain to jump a tooth on the sprocket or cause the timing belt to slip a bit. This in turn causes the valve train to be improperly timed with the piston position --> piston hits valves --> bent valve stem, poor compression, bad combustion, etc. (This one makes the most sense to me given my knowledge of engine mechanics - I've been working on cars for ~15 years and they share the same basic mechanics with motorcycles)

First, why is the rev limiter or governor there? It's there to prevent engine rotational speed from going beyond a predetermined design limitation. Fact is you could hold that engine right up against the limiter all day long and it would not likely damage that engine. If you look in the owner's manual on page it ain't there you will find "don't hit the rev limiter because it will damage the engine." The reason it isn't there is because it won't damage the engine. It's simply a safety designed into the BCU that prevents the ignition from allowing an appropriate spark to be generated beyond the predetermined limitations and it's that simple.

DI did bring up a good point in that it is a non-functioning unit on the deceleration side. Personally, I would like to see bikes have an adjustable shift light as well as the limiter....