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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