Lawrie,
Nope ... no empirical proof ... just the recommendations of
the cam manufacturers and the engine building books that I
have read ... so, its the procedure that I follow.
**********************************************************
Safety Fast! ... larry.g.unger@lmco.com
'61 MGA 1600 MkII
-----Original Message-----
From: Lawrie Alexander [mailto:Lawrie@britcars.com]
Sent: Sunday, February 14, 1999 10:57 AM
To: Unger, Larry G
Cc: mgs@autox.team.net
Subject: Re: head gasket/break in questions
Have you empirical proof that not doing exactly as you say does destroy - or
at least significantly shorten the life of - a cam? For over twenty years
now, I have just kept my "first-start" engines running at 1500 r.p.m or so
until they reach temperature and this has not seemed to create any problems.
Lawrie
-----Original Message-----
From: Unger, Larry G <larry.g.unger@lmco.com>
To: 'Lawrie Alexander' <Lawrie@britcars.com>; ccrobins <ccrobins@ktc.com>;
Gaetke <gaetke@ix.netcom.com>
Cc: mgs@autox.team.net <mgs@autox.team.net>
Date: Saturday, February 13, 1999 10:20 PM
Subject: RE: head gasket/break in questions
>Gents,
>
>No mention of 'bedding in the cam'? The first minutes
>are critical to the life of the cam ... vary the rpm
>between 2200 and 2700 for the first 15 to 10 mins ...
>then, retorque the head etc.
>
>**********************************************************
>Safety Fast! ... larry.g.unger@lmco.com
>'61 MGA 1600 MkII
>
>
>
>-----Original Message-----
>From: Lawrie Alexander [mailto:Lawrie@britcars.com]
>Sent: Sunday, February 14, 1999 12:58 AM
>To: ccrobins; Gaetke
>Cc: mgs@autox.team.net
>Subject: Re: head gasket/break in questions
>
>
>Charley............
>
>Yup, you're gonna "gettit"...........:-)
>
>But only because you state that the car should be left overnight before the
>head nuts are re-torqued. I thought we covered this a few weeks back, but
>here goes again..............
>
>After the rebuild, the engine should be started and run till it reaches
>normal operating temperature. Then the head should be re-torqued and the
>valves re-adjusted. Then the car can be driven gently for 500 miles or so,
>at which point the oil and filter should be changed and the head torque and
>valve adjustment re-checked while the engine is warm. The only engines on
>which you re-torque when the engine is cold are those having aluminum
heads.
>
>Lawrie
>British Sportscar Center
>-----Original Message-----
>From: ccrobins <ccrobins@ktc.com>
>To: Gaetke <gaetke@ix.netcom.com>
>Cc: mgs@autox.team.net <mgs@autox.team.net>
>Date: Saturday, February 13, 1999 7:35 PM
>Subject: Re: head gasket/break in questions
>
>
>>Hi Matt,
>>
>> Oh, Im gonna gettit for this one. Drive it mildly for a coupla
>>heundred miles. Park it overnite. Retourque the head nuts, etc. Drive
>>it conservatively, coupla vrooms, 1K more miles, no banzai!! Retighten
>>every thing and retorque the head nuts. Drivvit like the nut you are
>>(vrooommm!).
>>
>> If it hasn't blown up by now, it's probably good for ?00K miles. Have
>>fun!!!
>>
>> Charley (VROOMM) Robinson
>> '69 B VVRROOOOMMM!!!
>>
>
|