Alan,
BTDT The timing chain slapping against the cover sounds just like a
chain slapping against metal. No pun intended. It is a rattle right at
the front and certainly not like any lower engine problem that I ever
heard. Sorry to send that news!
Bill Barnett
'53 BN1
Alan Seigrist Blue 100 wrote:
>Michael, et. al.,
>
>Come to think of it, do you suppose the O ring-cam sprocket chain tensioner
>has failed on the car? The car seems to make the most knocking noises at
>idle... checked the water pump and it is very tight so ... maybe the
>tensioner has gone kaput and the chain is flopping around?
>
>I don't seem to notice the noise so much except at idle....
>
>Alan
>
>'52 A90
>'53 BN1
>'64 BJ8
>
>On 5/15/07, Michael Salter <msalter@precisionsportscar.com> wrote:
>
>
>>Hi Alan,
>>Although the center cap can be removed reasonably easily, after removing
>>the
>>pan and oil pump it is pretty difficult to remove either the front or rear
>>main cap because there are bolts which pass through the engine end plates
>>and thread into the caps themselves.
>>I have changed the crank in a 100S engine without removing the engine from
>>the car but when one considers that the front cover, timing chain, engine
>>front plate, oil pump, gearbox, clutch, flywheel, and engine rear plate
>>have
>>to be removed, it really isn't worth the trouble.
>>I would however suggest that it is much more likely that you have spun a
>>rod
>>bearing than a main and, if you caught it early enough, you may be able to
>>just change the rod bearings, although that too is pretty unlikely.
>>
>>Michael Salter
>>100S (1955)
>>3000 Mk111(1965)
>>100 (1953)
>>AHX12 (1953)
>>Bugeye (1961)
>>http://www.netbug.net/blogmichael/
>>
>>-----Original Message-----
>>From: owner-healeys@autox.team.net [mailto:owner-healeys@autox.team.net]
>>On
>>Behalf Of Alan Seigrist Blue 100
>>Sent: May 15, 2007 12:39 AM
>>To: Healey
>>Subject: Broken Engine - 100 - tips
>>
>>Hi -
>>
>>I need to take the main bearing caps off the motor of my Atlantic (same
>>motor as a 100) to check if I've spun a bearing. I've been told the caps
>>are
>>press fit into the block.....
>>
>>Is there any way to remove them with the motor in situ... or do I have to
>>pull the motor and take it to a machine shop. I really don't want to yank
>>the motor on this thing (the motor otherwise is in great shape)... I
>>suspect
>>it just has a spun/scored main bearing, everything else is like new.
>>
>>Any advice apprciated.
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