healeys
[Top] [All Lists]

Re: [Healeys] Discovery's - Engine Milestone and setback - more info

To: john spaur <jmsdarch@sbcglobal.net>
Subject: Re: [Healeys] Discovery's - Engine Milestone and setback - more info
From: Chris Dimmock <austin.healey@gmail.com>
Date: Tue, 8 Jan 2013 14:08:33 +1100
Cc: "healeys@autox.team.net" <healeys@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <6.2.3.4.2.20130107154730.04ac0608@pop.att.yahoo.com> <CAFBXTkK09UEK6C-m7cKoPAX2D9nYu9-eeC8qvFaYoqFvgRZ69A@mail.gmail.com> <6.2.3.4.2.20130107183925.01fedc10@pop.att.yahoo.com>
Hi John,
The DW cam is also drilled in the cam lobes. The cam becomes an oil gallery
and it lubricates the cam followers, via the holes in the cam lobes, solving
the issue of the biggest single wear related issue in the C series design.
I don't think it has anything to do with the DW camshaft design.
Best
Chris

Sent from my iPhone

On 08/01/2013, at 1:52 PM, john spaur <jmsdarch@sbcglobal.net> wrote:

> I forgot to mention I have a DW cam. It is line bored the full length and
plugged at the end of the line at the rear bearing.
>
> The shop manual states that the second oil way (from the oil pump on the
right hand side of the engine) supplies oil to the #3 cam bearing. In my case
the oil would be forced through the center of the cam shaft to the other three
bearings too. I presume oil would flow out around the bearing into the hollow
at the back of the engine and then flow into the crankcase through the 1/4"
round or so hole at the bottom of the hollow.
>
> I can't see how enough pressure could build up in the hollow to blow the
gasket unless the hole was plugged.
>
> John
>
> At 09:24 AM 1/8/2013 +0800, Alan Seigrist wrote:
>> Hi John -
>>
>> I was thinking if this is blow back from the #4 cam oil galley, it might
lessen over time as the cam bearings bed in (i.e. reducing back pressure).
You might also want to check the #4 cam bearing and make sure the oil feed
holes are properly lined up.
>>
>> I think using Hylomar blue or soft Hylomar should be enough to make up for
gaps on the backplate, maybe you just had a spot you missed somewhere.
>>
>> Keep us posted on this.
>>
>> Best,
>>
>> Alan
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
http://autox.team.net/mailman/options/healeys/austin.healey@gmail.com
_______________________________________________
Archive: http://www.team.net/archive

Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys


<Prev in Thread] Current Thread [Next in Thread>