revtothelimit - motorbike forum

My assumption is that valve clearances don’t change over time, just miles. Is that correct? The bike I just bought has the valve clearances and rocker arms changed 2000 miles ago but 5 years ago. Leaving this and checking when it’s warmer but riding it in the meantime doesn’t seem like a high risk strategy… agreed?

Thanks

Mark

Wouldn't worry me in truth.

Mechanical things only wear through use.

That’s what I thought. I’ll change the oil and get using it. Cheers.

The valve clearances tighten up because the valve springs stretch the valve stems, that doesn't happen when the engine isn't running, the the clearances get wider either the cams or the followers are wearing, again this only happens when the engine is running.

Wide clearances won't hurt the engine but you'll loose a small amount of power, tight valves will wreck an engine eventually.

Well and the seats recess too

Me being me I'd check them anyway as I'm sure it's not a tricky job. But they shouldn't have gone anywhere. Be good to have a look see what state the cam is in and see if there's any gravel and shit about

Do you believe this yarn about what was fixed five years ago?

I’ve got the receipts.

It's a KTM FFS.
The pixies will have been in there and changed EVERYTHING!

Lol

dern wrote: Thu Dec 21, 2023 1:59 pm I’ve got the receipts.

That certainly proves that they got some money.


If they did it at all, they probably did it wrong.

JackyJoll wrote: Thu Dec 21, 2023 1:51 pm Do you believe this yarn about what was fixed five years ago?

Are valve clearances like brake fluid, absorbing moisture over time?

JackyJoll wrote: Thu Dec 21, 2023 3:32 pm

dern wrote: Thu Dec 21, 2023 1:59 pm I’ve got the receipts.

That certainly proves that they got some money.


If they did it at all, they probably did it wrong.

Your optimism is an inspiration.

Horse wrote: Thu Dec 21, 2023 4:16 pm

JackyJoll wrote: Thu Dec 21, 2023 1:51 pm Do you believe this yarn about what was fixed five years ago?

Are valve clearances like brake fluid, absorbing moisture over time?

Yes, but they dry out when you use them.

David wrote: Thu Dec 21, 2023 4:24 pm

Horse wrote: Thu Dec 21, 2023 4:16 pm

JackyJoll wrote: Thu Dec 21, 2023 1:51 pm Do you believe this yarn about what was fixed five years ago?

Are valve clearances like brake fluid, absorbing moisture over time?

Yes, but they dry out when you use them.

I tried an Italian tune up to try and get rid of the condensation muck in the crankcases. Didn't work.

Horse wrote: Thu Dec 21, 2023 4:16 pm

JackyJoll wrote: Thu Dec 21, 2023 1:51 pm Do you believe this yarn about what was fixed five years ago?

Are valve clearances like brake fluid, absorbing moisture over time?

I hope they don’t taste as bad as brake fluid.

JackyJoll wrote: Thu Dec 21, 2023 5:41 pm

Horse wrote: Thu Dec 21, 2023 4:16 pm

JackyJoll wrote: Thu Dec 21, 2023 1:51 pm Do you believe this yarn about what was fixed five years ago?

Are valve clearances like brake fluid, absorbing moisture over time?

I hope they don’t taste as bad as brake fluid.

No, the heat drives the nasty off, they taste like a virgins bum.

David wrote: Thu Dec 21, 2023 7:35 pm

JackyJoll wrote: Thu Dec 21, 2023 5:41 pm

Horse wrote: Thu Dec 21, 2023 4:16 pm

Are valve clearances like brake fluid, absorbing moisture over time?

I hope they don’t taste as bad as brake fluid.

No, the heat drives the nasty off, they taste like a virgins bum.

Female yeah?

I wouldn’t want to get caught out again.

Definitely. I have no experience of other types .