What did you do with your GRiSO today?

Well done mate. The wrap sucks gonads.

Problem is I want to polish them a bit more now

Dammit. That’s twice in 2 rear tires, when they’ve both had 1000s miles of tread remaining. Am I a fool if I ride with a plug for another month…?[You must be registered and logged in to see this image.]

yup

Pouty face. But I kinda knew it. My common sense gland might be a little underactive, so it’s good to be told sometimes.

I've had a proper plug repair done by my tire fitter before on rubber that's got lots of life left.
I would consider doing that.

Lots of people will ride with an external plug and have no problems but personally I prefer to get a proper self vulcanising internal patch done, then I call it good. I'm told though that few shops in the US will do internal patches for liability reasons.

If it's only got another 1,000 miles of life I'd bite the bullet and stick a new one on. I use up fronts before rears usually, (Which is weird because I don't use the brakes an awful lot.) so if it was a rear I'd just go with a new set for the simple reason matched new tyres are lovely!

I guess it matters what kind of distances and at what speeds and conditions you routinely ride..only you know that. To my eyes that tire is pretty well used up. I have a real paranoia of riding hard into corners of mountainous twisty's with that sort of tread with a plug in it..but thats just me..I know it is a maybe a personal phobia I have...If I were just commuting locally everyday on the slab I would maybe feel different.

[You must be registered and logged in to see this image.]

Got my battery tender hookup and usb charger put on my new GRiSO! Both cables were just long enough to be secure and not pull when going lock to lock for the charger. The bike came with the phone mount, but from using it so far the vibrations seem to be very well controlled. The STL area has a few more days of warm weather so I'm gonna try to make the most of it!

Beautiful fall day. GRiSO loves cool weather and high barometric pressure, running very strong. Changed the rear Matris spring from 135 to 110, just about perfect.
[You must be registered and logged in to see this image.]

I did just a good ride after changing the clamps in the tank and fuel filter, and installed original screen
[You must be registered and logged in to see this image.]

I took some pictures of my love after a gentle throttle twisting ride [You must be registered and logged in to see this image.]

Rode it to the office for what was probably going to be the last time for the year.

now it looks like a certainty. 5 miles from home engine loses a noticable amount of power and starts making a very loud clatter/clacking. Pull off road, engine off. Call a friend who helps me chain it to a streetlamp near a service station and catch a ride with them home.

Lord knows its probably a dropped valve. Odd given that I'd adjusted them a few months ago. Wonder if the temperature drop has anything to do with it. Going down tomorrow again to check under the valve covers for any obvious signs and then sending a borescope down the spark hole to see if the piston is buggered.

Typical!

After rollerisation it didn't have any problems with revving above about six grand did it? In most of the cases I've seen where valves have dropped it's been because the valve timing has been out by a tooth and the symptom of that is a reluctance to rev above 6-6.5k.

Pete Roper wrote:

After rollerisation it didn't have any problems with revving above about six grand did it? In most of the cases I've seen where valves have dropped it's been because the valve timing has been out by a tooth and the symptom of that is a reluctance to rev above 6-6.5k.

None that I know of. I purchased the bike post-rollerisation, but I was reving it up to 7k that day without issue.

There's a noticeble engine note change above 4k rpm but I believe this is due to the fueling on the stock map?

I had noticed a ticking sound between 2-2.5k but investigations in previous threads suggested this could be the camchain tensioners in the heads getting "gunk" in them (per your own comments    ). Ironically, the whole point of this ride was to get the tank emptied so I could get them checked.

Clattery tensioners is more usually related to a blown sump spacer gasket experience has shown. If that was the problem then it may not of dropped a valve but may of run its big ends. If that is the case then if you're lucky you may be able to save the crankpin and just drop a new set of big end shells into it. If the crankpin is buggered you'll need a new crank. I have several if you need one.