[Healeys] Rattling noise on hard acceleration

[Rich C]

Peter,

Check for marks on the driveshaft and hand brake cable. Torqueing the axle 
moves the position of the diff pinion flange and can place the drive shaft 
in a different place than when at rest. Also check for loose clips or cracks 
in the leaf spring. You may have snapped a leaf.

Rich Chrysler

----- Original Message ----- 
From: "Peter Schauss" <schauss at worldnet.att.net>
To: "'Healey Mail List'" <healeys at autox.team.net>
Sent: Tuesday, April 28, 2009 10:13 PM
Subject: [Healeys] Rattling noise on hard acceleration


> My BJ7 makes a metallic-sounding rattling noise, coming more or less from
> the right rear of the car when I accelerate hard pulling away from a stop
> sign.  It sounds almost like I am dragging part of my exhaust system or 
> some
> piece of sheet metal is hitting a rotating part.  If I accelerate gently I
> don't get the noise.  It happens mostly in first gear but occasionally in
> second as well.  The car runs smoothly at parkway speeds.
>
> I have checked:
>
> - The drive shaft does not seem to be hitting anything.
> - The exhaust system is mounted solidly and does not appear to be hitting
> anything.
> - I insulated the rod which links the right side hand brake lever with the
> one on the left wheel where it passes through a loop on the back of the
> differential.
> - I insulated the brake cable casing where it contacts the spring on the
> right side of the car.
> - I pulled the right rear brake drum and found no loose parts.
> - The rear wheels do not seem to be contacting the body of the car.
>
> One more clue is that this noise started happening right after a made
> several hard (like stand on the brakes) stops while testing my brakes last
> fall.
>
> Any ideas?
>
> Thanks,
> Peter Schauss
> 1963 BJ7
> 1980 MGB
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