Morris Minor/Traveller?

Question

Why do Morris Minors make the distinctive exhaust note when changing down gears?

Answer 1

Served my time on these and you could pick a moggy out from anything.Certainly had a long pipe from forward mounted silencer which gave the well known noise on gear changes.They were also very small bore pipe but non the less an institution of a vehicle.GL

Answer 2

I think it could have to do with the fact they have a very narrow exhaust.

Answer 3

One of the sounds of the past! The old  A series BMC engines were fitted in the Austin A 30,  35, & A 40 as well, but only the Moggy had that distinctive "f**t" from what my addled memory can recollect. Some of the MGB's with the "B" series engine also made a similar sound on down changes. Memories!!

Answer 4

IT IS BECAUSE OF THE LONG LENGTH OF THE TAIL PIPE RUNNING BACK FROM THE FORWARD MOUNTED,AND ONLY SILENCER.

IT RESONATES DOWN THE LENGTH OF THE PIPE LIKE A MUSICAL INSTRUMENT

Answer 5

without that noise its not a moggy.

Answer 6

As well as the exhaust note the gearbox changed note when the engine slowed the car.

Answer 7

Its a trumpeting noise, I had one about 36 years ago. The exhaust is very simple basic system and the back pressure encouraged a musical note. I also had air horns, the local constabulary were not amused !