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Date:         Wed, 21 Apr 2004 18:02:22 -0700
Reply-To:     Mark Seifert <theburnvictims@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark Seifert <theburnvictims@HOTMAIL.COM>
Subject:      Re: Tools for engine overhaul on 85 waterboxer
Content-Type: text/plain; format=flowed

What I meant was, I don't think it has to be EXACTLY DEAD ON 37.00000 lbs, as in, if you torqued one at 38.2 lbs, and another at 36.1 or something like that. I dont believe it would make a bit of difference. I'm not going to sit here and try to tell someone to use a ratchet and hold it with 2 fingers or something like that, but I do think that the waterboxer is a pretty forgiving motor when it comes to torque specs.

>From: John Rodgers <jh_rodgers@bellsouth.net> >To: Mark Seifert <theburnvictims@HOTMAIL.COM> >CC: vanagon@GERRY.VANAGON.COM >Subject: Re: Tools for engine overhaul on 85 waterboxer >Date: Wed, 21 Apr 2004 09:31:03 -0500 > >Mark Seifert wrote: > >>When I rebuilt my 2.1 waterboxer, I never needed any special tools. I used >>a >>slide hammer to pull the wrist pins out. Everyone has told me not to use >>the >>click-type torque wrench on the heads. Not sure exactly why, but they >>preach >>it, so I listened. I bought a cheapo pointer-syle for $11. Those dont seem >>very accurate, but I dont think it has to be exactly 37 lbs anyway. > >Mark, > >BAD! BAD! BAD! > >Torque values specified are specified for a reason. and this is especially >true on head bolts. Get even one head bolt out of spec and you are headed >for trouble. This would allow uneven expansion/flex and result in a seal >leak, or worse, a cracked head or case. For these reasons the torque wrench >needs to be a good one that is properly calibrated, and whose variations >through the ranges of torque for the wrench are minimal. In other words, as >Marisa Tormei said in the movie "My Cousin Vinny" --- " The torque wrench >should be dead on balls accurate!" She was right on. Especially on head >bolts. And case bolts where applicable. > >I had a cylinder barrel come loose on an airplane in flight one time, >because some damn fool didn't use the calibration tool to calibrate the >torque wrench before tightening down the nuts on the cylinder case-studs. >It's a wonder the engine didn't just fail, but I managed to get the >aircraft on the ground ok. Oil was all over the place. The noise was awful, >and scared the crap out of me. Hell of a noise. Several studs were broken, >and nuts backed off on others, allowing the cylinder to work up and down. >Could have been deadly. > >Vanagon engines are not quite so crucial, but you could destroy an engine >if the torques are not properly applied. > >Regards, > >John Rodgers >88 GL Driver > > >

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