MGB & GT Forum

rattle in the exhuast

Topic List Forum List Newer Older Start New Topic

rattle in the exhuast #1
219 bob wroe elizabeth city, NC, USA Sign in to contact	Topic Creator (OP) Sep 17, 2014 07:50 PM Joined 13 years ago 281 Posts

Hello,

Got a rattle when the car is at idle....my mechanic can't find it out, it just started only at idle, not the bee hives...are my hangers to too tight? 12 year old Ansa..? LORI Ann

Was this post helpful or interesting?

Yes No Thank

Sponsored Links. Become a

Supporting Member to hide this ad & support a small business

Re: rattle in the exhuast #2
converse212 Eric Morgan Atlanta, GA, USA Sign in to contact 1958 MG MGA 1970 MG MGB "Daily Driver" 1970 MG MGB GT "Rusty" 1971 MG MGB GT & more	Sep 17, 2014 07:56 PM Joined 11 years ago 3,036 Posts

Check for any hard contact with the body. All hangers need to be fully isolated from metal to metal contact with the body.

1973 MGB: Blow through supercharged, intercooled, 10psi boost. VP12 cam, aluminum flywheel, 8.9:1 compression. Black label OD, Saab 15” minilites. Goes a lot better than it looks.

Was this post helpful or interesting?

Yes No Thank

Re: rattle in the exhuast #3
mowog1 Rick Ingram Saint Joseph, IL, USA Sign in to contact 1952 MG TD "Nigel" 1969 MG MGC "Vicky" 1972 MG MGB "Mallard" 1974 MG MGB GT V8 Conversion "The V8" & more	Sep 17, 2014 08:01 PM Top Contributor Joined 19 years ago 28,203 Posts

I see you have a rubber bumpered car.

Do you still have the ZS175 carb and factory air filter housing?

It could be the flapper as seen here.

1952 MGTD - 1969 MGC - 1972 MGB - 1974&1/2 MGB/GT V8 conversion - 1978 MGB

mowog1@aol.com

Pieces Of Eight: Struts For Your MG www.mgstruts.com

Pieces of Eight! has provided gas-charged bonnet & bootlid strut kits for the MGB/MGC and hatch kits for the MGB/GT-MGC/GT since 1996. We have recently added MG Midget bonnet and bootlid kits to inventory. Contact Rick at: mowog1@aol.com

Air flapper-heat exchange_1.jpg 34.2 KB

Was this post helpful or interesting?

Yes No Thank

Re: rattle in the exhuast #4
lewisrn Bob L Danville, IN, USA Sign in to contact 1980 MG MGB "The "B"	Sep 17, 2014 08:31 PM Top Contributor Joined 13 years ago 13,194 Posts

In reply to # 2800086 by mowog1 I see you have a rubber bumpered car.

Do you still have the ZS175 carb and factory air filter housing?

It could be the flapper as seen here.

Great tip. When I had the ZS on my car, it took me a while to find the source of that rattle

“Ideological certainty easily degenerates into an insistence upon ignorance". Daniel Patrick Moynihan

In any debate, the side which strays from civil discussion is usually the side that lacks confidence in its debate position or in the merit of their arguments. Making personal attacks on the opponents instead of staying on the subject is also a sign of weakness.

Anyone who feels compelled to respond in kind to any perceived slight is often suffering from narcissism.

Was this post helpful or interesting?

Yes No Thank

Sponsored Links. Become a

Supporting Member to hide this ad & support a small business

Re: rattle in the exhuast #5
jjgerding Jay Gerding Spring Hill, FL, USA Sign in to contact	Sep 17, 2014 11:08 PM Joined 12 years ago 2,763 Posts

Had this problem a year ago and it drove me crazy. Bad rattle on start up but lessened as car heated up. Turned out to be loose baffles or whatever is inside of the front muffler/resonator. Got rid of that, rattle gone.

Was this post helpful or interesting?

Yes No Thank

Re: rattle in the exhuast #6
ErnieY Ernie Y Albatera, Alicante, Spain Sign in to contact 1976 MG MGB GT	Sep 18, 2014 02:15 AM Top Contributor Joined 12 years ago 19,528 Posts

It's quite common for baffles to fracture inside a silencer box and thumping with the palm of the hand will usually reveal it.

What you can do about it - if anything - depends on what's let go and what time/resources you're prepared to put into the job.

The back box on my car which has been on it for over 25 years has had surgery performed on it several times, it's not that I'm too tight to buy a replacement - in fact I have got one - it's just that it has a glorious crisp bark to it whilst the replacement is flat and woolly.

Was this post helpful or interesting?

Yes No Thank

Topic List Forum List Newer Older Start New Topic

To reply or ask your own question:

or

Registration is FREE and takes less than a minute

Forums

Having trouble posting or changing forum settings?
Read the Forum Help (FAQ) or contact the webmaster

MGB & GT Forum

rattle in the exhuast

To reply or ask your own question:Members Sign InorCreate an AccountRegistration is FREE and takes less than a minute

To reply or ask your own question:

or

Registration is FREE and takes less than a minute