|
9 members (bmgermany, Strathaven, WAFU_Tom, Graham, G4FUJ, chanteclair, B3MOG, deano, Barkbark, SteveT),
397
guests, and
105
robots. |
|
Key:
Admin,
Global Mod,
Mod
|
|
Wales
by Joske Vermeule, September 1
|
|
|
|
|
|
|
|
|
|
|
Forums39
Topics49,866
Posts837,608
Members9,596
| |
Most Online1,063
Jun 14th, 2026
|
|
|
There are no members with birthdays on this day. |
|
|
|
Joined: Aug 2019
Posts: 13
New to Talk Morgan
|
OP
New to Talk Morgan
Joined: Aug 2019
Posts: 13 |
Thanks everyone for your suggestions. Note that the clanking sounds only occurs when the engine is in gear. I have been taking it out of gear and avoiding downshifts to eliminate the sound. Makes me think it's not the belt.
|
|
|
|
|
Joined: Feb 2019
Posts: 1,889 Likes: 16
Talk Morgan Enthusiast
|
|
Talk Morgan Enthusiast
Joined: Feb 2019
Posts: 1,889 Likes: 16 |
taking it out of gear and, in effect coasting, does not mean that it is not the belt. The belt "slaps" when there is reverse pull against it. being out of gear eliminates the reverse pull.
Think of it this way.... going forward at speed the top of the belt is pulling the wheel/sprocket. When you decelerate the wheel/sprocket is now pulling the engine through the bottom of the belt.
Last edited by rcmatt; 18/09/19 01:35 PM.
Rodger
2018 M3W "Dreamers on the Rise"
2004 Plus 8 (wife's)
old Goldwings and a couple of Harleys
|
|
|
|
|
Joined: May 2011
Posts: 1,625 Likes: 25
Talk Morgan Enthusiast
|
|
Talk Morgan Enthusiast
Joined: May 2011
Posts: 1,625 Likes: 25 |
What year is your car? Does it have the Centa compensator, or is it a pre 2014 car with the original Harley style compensator.
2021 M3W
2013 M3W - Sold
1971 4/4 2 Seater
1934 Sports
|
|
|
|
|
Joined: Jun 2015
Posts: 580 Likes: 2
Talk Morgan Regular
|
|
Talk Morgan Regular
Joined: Jun 2015
Posts: 580 Likes: 2 |
When my M3W came back from its re-manufacture at Malvern last year, I was amazed how tight the belt was. I was checking as they had not bothered to pump up the tyres, I wondered if they had tightened the belt properly. Like a rod of iron is how I would describe it, with maybe less than 1/4" of deflection possible. Considerably tighter than I would have made it before, anyway. My M3W has always clanked at low speed over a rough road both with original chassis' rigid mounted BB and now NVH bushed BB. I found it is quite sensitive on this to rear tyre pressure. Even slightly above 25 psi and the clanking increases a lot.
Wilson
|
|
|
|
|
Joined: Aug 2019
Posts: 13
New to Talk Morgan
|
|
OP
New to Talk Morgan
Joined: Aug 2019
Posts: 13 |
|
|
|
|
|
Joined: Mar 2013
Posts: 720 Likes: 23
Talk Morgan Regular
|
|
Talk Morgan Regular
Joined: Mar 2013
Posts: 720 Likes: 23 |
When my M3W came back from its re-manufacture at Malvern last year, I was amazed how tight the belt was. I was checking as they had not bothered to pump up the tyres, I wondered if they had tightened the belt properly. Like a rod of iron is how I would describe it, with maybe less than 1/4" of deflection possible. Considerably tighter than I would have made it before, anyway. My M3W has always clanked at low speed over a rough road both with original chassis' rigid mounted BB and now NVH bushed BB. I found it is quite sensitive on this to rear tyre pressure. Even slightly above 25 psi and the clanking increases a lot.
Wilson I had same experience. When car came back from the factory last year after the chassis upgrade the belt was very tight. I released it to my normal tension. This year I also got a clonking sound from below. Checked everything where it could be come from. I tensioned the belt much tighter ( too tight to my opinion ) and the clonking sound was gone. But I feel a bit uncomfortable with such a tight belt. I have no NVH installed.
|
|
|
|
|
Joined: Nov 2013
Posts: 1,947
Talk Morgan Enthusiast
|
|
Talk Morgan Enthusiast
Joined: Nov 2013
Posts: 1,947 |
Laurens did you have a replacement chassis? My cracked 2013 one replace & it now has the NVH kit but not originally.
|
|
|
|
|
Joined: Mar 2013
Posts: 720 Likes: 23
Talk Morgan Regular
|
|
Talk Morgan Regular
Joined: Mar 2013
Posts: 720 Likes: 23 |
Laurens did you have a replacement chassis? My cracked 2013 one replace & it now has the NVH kit but not originally. Still have the original chassis without NVH
|
|
|
|
|
Joined: Aug 2019
Posts: 13
New to Talk Morgan
|
|
OP
New to Talk Morgan
Joined: Aug 2019
Posts: 13 |
So it turns out that the clanking sounds was the belt rubbing up against the mudguard when downshifting. Not sure why depressing the clutch made it go away. Anyway, I considered tightening the belt but everything seemed fine so I ended up removing the mudguard, bending it a bit and bolting back on. No more issues.
|
|
|
|
|
Joined: Feb 2019
Posts: 3,857 Likes: 2
Talk Morgan Addict
|
|
Talk Morgan Addict
Joined: Feb 2019
Posts: 3,857 Likes: 2 |
I cut a notch in the mudguard.
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)
|
|
|
|
|
