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WAS: Tightening head bolts , NOW: torque wrenches
Neither is necessarily more accurate in daily use (although my nod would go to a recently-calibrated clicker), but the clicker certainly is easier to use and as anyone who has studied manufacturing knows, the easier it is to use.. the easier it is to use RIGHT.
This is once case where I vote for new technology over old skool.
Larry
----- Original Message -----
From: David Utley
To: T. Reed
Cc: chris gonzalez ; scirocco-l@scirocco.org ; Jeff Toomasson
Sent: Tuesday, February 03, 2004 2:30 PM
Subject: Re: Tightening head bolts on engine stand?
Ah, but the pointer type gets out calibration because of use, not improper
storage... :-)
Those pointer types get weaker and weaker with use, so therefore the more you
use it, the likely you are to be under-torquing...
At least, this is what I have been told (by folks much smarter than I)...
--
Regards,
David Utley
-----------
Cable Volkswagen
405-470-3129
1-800-522-6793
Quoting "T. Reed" <treed2@wsu.edu>:
> Have to agree with their preference.
>
> The clicker type always seem to click AFTER the bolt breaks. And if you
> leave them sitting without returning the dial to the zero position they
> get out of calibration.
>
> The pointer type shows you exactly what you're putting on the bolt as its
> happening. It's "analog" and the clicker type is "digital".
>
> Heh, I'm a nerd.
>
> -Toby
>
> On Tue, 3 Feb 2004, chris gonzalez wrote:
>
> > Ah, yes I was using raceware studs/fasteners on my diesel. Make sure you
> chase the threads and blow out the bolt holes, or your torque readings will
> be different for each bolt. Oh, and raceware themselves recommend using the
> beam type torque wrench vs. click or dial torque wrenches. They went as far
> as to say they recommend NOT using click or dial wrenches.
> >
> >
> > Jeff Toomasson <jtoomasson@yahoo.com> wrote:
> > My worry was whether lifting with the stretch bolts partially torqued
> would
> > damage them any...
> >
> > The 180' turn comes directly from the Bentley and only applies to stretch
> > bolts (which BTW should be done with the breaker bar and NOT the torque
> > wrench! :) IIRC, Diesels use head studs because of the ultra high
> > compression. Gas engines using studs like ARP or Raceware need to be
> > retorqued too...
> >
> > JT
> > ----- Original Message -----
> > From: "chris gonzalez"
> > To:
> > Sent: Tuesday, February 03, 2004 9:34 AM
> > Subject: Re: Tightening head bolts on engine stand?
> >
> >
> > > just snug them to 20lbs and torque it in the car.but 180? where did the
> > extra half turn come from? I just did the head gasket on my diesel and the
> > process was 20lbs, 40lbs, 50lbs, warm up the car then retorque to 50lbs.
> 180
> > degrees more would have been more like 80lbs of torque.
> > >
> > >
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