Question for 2024 & later v85 owners

[bad Chad]

My 25 v85 makes a tapping/knocking sound at an 4100 rpm to maybe 4500. It’s barley discernible under very light acceleration, but more noticeable under heavy acceleration.  It’s not the tappets. My theory is it the VVT activating.  It’s done it since brand new, and with 2200 miles it hasn’t changed.  My question to you other owners, does yours do it?

[PeteS]

I haven’t noticed it yet and have only been able to do one ride this year. Might not be until April that the weather will break again.

Pete

[yrunvs]

pre-detonation? Is it a pinging/knocking/rattle under load? Anything like this? Some pre 2025 bikes suffer this. I don't know about the newer ones though. about 22 seconds in.

https://youtu.be/9Rjnvl0osIo

[JHBettsSr]

My 25 v85 makes a tapping/knocking sound at an 4100 rpm to maybe 4500. It’s barley discernible under very light acceleration, but more noticeable under heavy acceleration.  It’s not the tappets. My theory is it the VVT activating.  It’s done it since brand new, and with 2200 miles it hasn’t changed.  My question to you other owners, does yours do it?

I've not heard this on my '25.

[bad Chad]

No, it doesn't sound like pre detonation, it's more of a vibration sound.

[Huzo]

No, it doesn't sound like pre detonation, it's more of a vibration sound.

My Norge did that once and it turned out to be the lower header pipe rattling on the frame. Also those header guards on the ‘85 are notorious for rattling at certain frequencies.
Can you get the bike to do it in neutral ?
Take the muffler off and rattle it, maybe the cat converter is loose as well.
Check the header connection at the engine.
Is the spring on the sidestand or centrestand holding firmly ?
Can you do a video ?

[bad Chad]

Good ideas Huzo.

[Bulldog9]

It could be something loose as Huzo mentioned.

It could also be that small block chuck chuck chuck thunk thunk sound. I have it on my V7ii and V85.

It happens when fully warmed and on light throttle/accel or loping around between 3300+4300 +/- RPM. Sounds odd, but it is just the character and nature of the small block. My Stornello has done it from the beginning, and the new V85 has much of the same character. I also noticed it when riding other small blocks.

I always go back to the advice Dave Richardson gave me when I bought my fist Guzzi from him. "Guzzi's make very odd and agricultural sounds........... The only time to be worried if they aren't"  He was talking about the dual plate clutch noise of the 1100 Griso, but also listed and applied it broadly.

[Dirk_S]

It could be something loose as Huzo mentioned.

It could also be that small block chuck chuck chuck thunk thunk sound. I have it on my V7ii and V85…

I think this advice is more useful to a newer owner, but bad Chad has owned a small block for…how many years and miles, now? You’d think that his years of ownership and general knowledge would elevate him above the ol’ “Guzzis make noise” generality. I mean sure, we can all be prone to the occasional simple solution, but I would think years of ownership makes one accustomed to the common sounds.

[Bulldog9]

I think this advice is more useful to a newer owner, but bad Chad has owned a small block for…how many years and miles, now? You’d think that his years of ownership and general knowledge would elevate him above the ol’ “Guzzis make noise” generality. I mean sure, we can all be prone to the occasional simple solution, but I would think years of ownership makes one accustomed to the common sounds.

Ah, you're right. And as usual, I didn't read close enough that it was Chad, thinks it may be the variable cam/valve timing and that he hears it under hard acceleration as well.

[PeteS]

I think this advice is more useful to a newer owner, but bad Chad has owned a small block for…how many years and miles, now? You’d think that his years of ownership and general knowledge would elevate him above the ol’ “Guzzis make noise” generality. I mean sure, we can all be prone to the occasional simple solution, but I would think years of ownership makes one accustomed to the common sounds.

The new bikes have nothing in common with the older bikes except the cylinder angles. Virtually no parts are interchangeable except for maybe some of the fasteners.
They might as well be called Piaggios as Guzzis.

Pete

[Dirk_S]

The new bikes have nothing in common with the older bikes except the cylinder angles. Virtually no parts are interchangeable except for maybe some of the fasteners.
They might as well be called Piaggios as Guzzis.

Pete

You’re saying a V85TT motor is drastically different from a 2017-2021 V9?

[PeteS]

You’re saying a V85TT motor is drastically different from a 2017-2021 V9?

Its the only one that has VVT which is what Chad specifically referenced.

Pete

[mondtster]

I can't speak for the VVT bikes but the pre-VVT V85 engines seemed to generate noise that I've always attributed to the valvetrain in that speed range. The aluminum alloys often used in newer engines seem to have a tendency to transmit noise in ways that the older engines didn't do.

[Bulldog9]

You’re saying a V85TT motor is drastically different from a 2017-2021 V9?

The V85 motor is very different than the V7 850 & V9. Almost a different motor internally.

As I understand it, the V85 with variable valve timing motor is the same as prior. What is different is that they mounted some type of centrifugal/mechanical/variable timing device to the camshaft that changes cam/valve timing. The rest of the V85 motor is the same, at least for the e5s.

I don't believe the variable device is electrically controlled with solenoids the way it is in a lot of cars with VVT/VANOS/Etc.

[kingoffleece]

Here





#6 is the VVT gear

[Vagrant]

V85 is a lot different than v7-850. Cams, valves, crank shaft, throttle body, VVT, I haven't looked but I bet the pistons are too. That extra RPM need to have better internals.

[bad Chad]

With the bike on the side stand, I ran the rpm up to 4500, and I couldn't hear it.   I might have been able to hear a very, very faint version of it, but I really don't think so.   I'm going to try to see if I can pick it up on an iPhone while riding, we shall see.

[1wild1]

When I got my 22 it made a more harsh noise in that range coming on at 4100 rpms it seemed.  The bike had been tuned.  I came across a video on aprillia about syncing the flywheel to the computer.  I did the sync and the noise was gone. It's super easy enough to try.  with a warm bike, start with key off then proceed to start the bike, don't touch anything and rev it over 6k rpms 3 times letting the rpm's return to idle in between rev's.  that extra noise was gone and it ran a hair better.  Maybe this step was skipped on the setup on your bike after an update when assembling/delivery.

[Bulldog9]

When I got my 22 it made a more harsh noise in that range coming on at 4100 rpms it seemed.  The bike had been tuned.  I came across a video on aprillia about syncing the flywheel to the computer.  I did the sync and the noise was gone. It's super easy enough to try.  with a warm bike, start with key off then proceed to start the bike, don't touch anything and rev it over 6k rpms 3 times letting the rpm's return to idle in between rev's.  that extra noise was gone and it ran a hair better.  Maybe this step was skipped on the setup on your bike after an update when assembling/delivery.

That is interesting........ ....... Will do this after the break in service.