[Healeys] Rocker Cover Poll

Bob Spidell bspidell at comcast.net
Sat Apr 7 08:25:29 MDT 2018

I had a hard time getting my BJ8's cover to seal; even destroying one 
trying.  I finally figured out the top of the head, where the cover 
sits, appears to slope off a little on the front/right corner.  Here's 
what finally sealed things up for me:

1) glue the gasket to the cover (I use 3M Weatherstrip Adheisve; aka 
'yellow snot,' also comes in black)

2) run a thin bead of blue RTV silicone on the head-facing side of the 
gasket (yeah, I know it's dangerous, but a thin bead carefully applied 
has not caused me any problems)

3) let the cover sit on the head for a few minutes to let the bead of 
RTV spread gently

4) snug up the nuts - not too tight lest you deform the cover

John's suggestion is excellent, but I don't have any smooth, flat 
surface on which to perform the operations.   Hmmmm ...


On 4/7/2018 6:03 AM, John Vrugtman wrote:
> The way I fix this is to adhere the gasket to the cover, then place it 
> on a very flat surface with a weight on each nut to simulate when 
> installed.  Then go around the edge with a .003 feeler gauge.  Where 
> there is no resistance I carefully us a rubber hammer to tap down that 
> edge, eventually getting contact all the way around.
> John
> On 4/7/2018 7:32 AM, Patrick & Caroline Quinn wrote:
>> Hello
>> Having a lot of fun trying to stop a leak from the rear of the rocker 
>> cover of the BN3.
>> It’s a standard early C-series six-cylinder and pressed steel rocker 
>> cover with dome shape nuts.
>> The question is whether the accepted practice is to stick the cork 
>> gasket to the rocker cover with no jointing compound between the 
>> gasket and cylinder head. OR is the accepted practice to apply 
>> jointing compound to both surfaces?
>> Hoo Roo
>> Patrick Quinn
>> Blue Mountains, Australia
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