Thanks Neil! Very Interesting and since you made it back from the bottom, I
believe you.
Regards:
Jim Knox 91 Dak, friend of Terrible Tom another Mariner!
----- Original Message -----
From: "Neil W. Bellenger" <neil624b@rochester.rr.com>
To: <dakota-truck@dakota-truck.net>
Sent: Friday, February 06, 2004 3:33 PM
Subject: DML: RE: RE: Re: For Those Who Love CID
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Wisotzkey,
> Rich
> Sent: Friday, February 06, 2004 6:26 AM
> To: 'dakota-truck@dakota-truck.net'
> Subject: DML: RE: Re: For Those Who Love CID
>
>
> That's a good question. I was so blown away with the magnitude of the
> engine, I never thought about what they use to torque those huge nuts
> and
> bolts!
>
>
> For the studs holding the cylinder heads on, they probably use the "stud
> stretch method".
> The studs would have a drilled and tapped hole in the center.
> Once the head is in place, and a nut is run down to the head surface, a
> high strength rod is threaded into the stud and an integral hydraulic
> jack, bearing against the head surface, lifts the stud a few
> thousandths. The device also spins the nut down tight and then the jack
> is released slowly. The amount of stretch is carefully calculated and
> can be related to the final "torque" value. There are a limited number
> of stretch cycles and a "not to exceed" stretch length before the studs
> have to be replaced.
> This is the method used on most commercial pressurized water nuclear
> plants to torque the reactor head bolts following refueling.
>
>
>
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