Re: Torquing Hot?

From: Bob Hamilton (hamilton(at)cast.navnet.net)
Date: Thu May 27 1999 - 20:47:48 CDT


Alpiners,

        The older Sunbeams (cast iron heads and block) call for retorquing HOT and
setting valves COLD! Quite a flip-flop!

Later,
Bob

At 06:07 PM 5/27/99 -0700, Sergio Dimarmo wrote:
>You're right.....torque head bolts cold to 45 lbs per RSB 68-3. Tappets are
>to be adjusted hot.
>
>Sergio
>1967 Sunbeam Alpine
>Series V 'AJNT 86'
>still working on it but getting closer!
>
>----- Original Message -----
>From: Jay Laifman <Jay_Laifman(at)countrywide.com>
>To: <alpines(at)autox.team.net>
>Cc: <RobCarpent(at)aol.com>
>Sent: Thursday, May 27, 1999 1:28 PM
>Subject: Torquing Hot?
>
>
>>
>>
>>
>> Rob wrote:
>>
>> >Tonight we will restart it, bring it up to temp and retorque the head
>then
>> >adjust and tune.
>>
>> I don't know if he is suggesting torquing the head hot. But, he seems to
>> be. I thought that torquing aluminum heads should be done when the head
>is
>> COLD (and adjusting the valves when they are hot). I heard once that
>> torquing a hot head could cause over torquing and upon cooling cause the
>> head to crack.
>>
>> But, now that I think about it, if the head is hot, it is larger than it
>> will be than when it is cold. So, maybe that is not the reason. But, I
>> still seem to recall that Alpine heads are supposed to be torqued cold. I
>> don't have my books. Anyone else know?
>>
>> Jay
>>
>>
>>
>

=========================================================
Robert (Bob) A.C. Hamilton, Waverley, Nova Scotia, Canada
The Man of Many Sunbeams - Alpine, Drophead and Saloon 1953-1954
Home Page: http://www.navnet.net/~hamilton/index.html
E-Mail: hamilton(at)cast.navnet.net
=========================================================



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