A new buzzing sound has started occuring on my 200BRM. Under power, as the engine passes through 2000rpm there's a brief buzz. It only occurs during a very small range of revs and doesn't do it when blipping the throttle or in 1st gear.

It sometimes does it through 3000rpm, but things get a bit loud above this so I'm not sure if it does it at higher revs.

Any ideas?

Exhaust, perhaps?

Dr Dave wrote:
Exhaust, perhaps?

Any way I could test this?

(It's quite a high-pitched buzzing, BTW)

Could be an exhaust heatshield - close examination of the exhaust system on a vehicle ramp would uncover this

Otherwise, its just a process of elimination >=(

mcurtains wrote:

(It's quite a high-pitched buzzing, BTW)

You don't have an angry wasp trapped in the heater matrix by any chance ? :D

I seem to remember reading a thread about an additional exhaust / downpipe mounting bracket made by MGR specifically to stop this buzz on the VVC. Unfortunately I cant remember where I saw it???

Part No WCU100990 is what you are thinking about; about £5-worth IIRC

Bit fiddly to fit >=( but worth it :D

Dr Dave wrote:
Part No WCU100990 is what you are thinking about; about £5-worth IIRC

Bit fiddly to fit >=( but worth it :D

I have this problems also. Should it be fixed by my dealer????:(

Already there on your ZR, Jamie :D

Dr Dave wrote:
Already there on your ZR, Jamie :D

Any idea's why it makes the "Buzzing" noise. I have taken it to a another engineer and he says it the exhaust housing!!! I also to spoke to my dealer they told me it needed re aligning., this they did and made no diff. Buzz still there 2000rpm. :eyes