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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Connecting Rod Nuts - Torque Method
Connecting rod nuts are torqued to 20 Nm then 90 deg +/- 2 deg.
Does everyone do the 90 degree by eye, or is there some trick I am unaware of? 
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10-27-2003, 04:18 AM
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With dtw's rebuild we just did it by eye using the wrench but I'll bet someone's done it more accurately
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Tim 1973 911T 2005 VW GTI "Dave, hit the brakes, but don't look like your htting the brakes...what? I DON'T KNOW, BRAKE CASUAL!!!" dtw's thoughts after nearly rear ending a SHP officer |
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10-27-2003, 04:22 AM
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Irrationally exuberant
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I do it by eye for the 90 degree case.
-Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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10-27-2003, 05:15 AM
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Registered
Join Date: Nov 2002
Location: Arlington, VA
Posts: 1,045
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Set the wrench parallel to the crank. 90 degrees is pretty easy to eyeball when the wrench is perpendicular.
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Charlie Stylianos 1982 SC Targa www.Dorkiphus.com - (The Land of the NoVA/DC/MD Porschephiles) |
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10-27-2003, 06:01 AM
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Registered
Join Date: Mar 2003
Location: the plains, va
Posts: 212
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Actually there is a torque angle gauge available from Snap-On for those of us with severe anal problems...
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when you see hoof prints, dont automatically assume zebras |
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10-27-2003, 09:35 AM
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Irrationally exuberant
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Quote:
-Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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10-27-2003, 09:53 AM
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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I am not trying to be too anal here, I just want to make sure I'm putting the same load on both bolts, if everyone else does it by eye, and it appears they do, then thats good enough for me.
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84 Cab - sold! 89 Cab - not quite done 90C4 - winter beater |
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10-27-2003, 09:56 AM
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Location: Arlington, VA
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Charlie Stylianos 1982 SC Targa www.Dorkiphus.com - (The Land of the NoVA/DC/MD Porschephiles) |
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10-27-2003, 11:44 AM
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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Yes, that link is somewhat similar isn't it.
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84 Cab - sold! 89 Cab - not quite done 90C4 - winter beater |
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10-27-2003, 11:48 AM
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Banned
Join Date: Feb 2003
Location: So California
Posts: 3,787
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I don't think its being anal. The only way to be right on is to use the torque angle guage, and its only $5 or $10 bucks.
In the case of 90 degrees many of us think that we can judge the angle accurately enough to dispense with the guage, probably rightly so. BUT if one has any reservations, for any reason, it IS prudent to do it right, ie use a guage. |
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10-27-2003, 06:41 PM
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I did mine by eye recently on my 2.2. However I knew it was taking one on Wayne shortcuts he mentioned in a previous thread because I don't have a tool to measure 90 degrees +/- 2 degrees other than a square. Can you sight 2 degrees?
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Steve F 69 911 71 911 87 Carrera 2004 RAM 1500 4x4 "Hemi" |
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10-28-2003, 08:42 AM
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Irrationally exuberant
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I question how anal you need to be for this. Torque is a fairly imprecise measurement. There are lots of sources for error. I wonder if using a (notoriously inaccurate) clicker type torque wrench or the wrong lube on the threads might introduce more error than being a few degrees off?
-Chris
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'80 911 Nogaro blue Phoenix! '07 BMW 328i 245K miles! http://members.rennlist.org/messinwith911s/ |
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10-28-2003, 09:14 AM
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Slumlord
Join Date: May 2001
Location: Canada
Posts: 4,983
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My only concerns were a) the +/- 2 degree spec which I can not meet by eye, if the spec was +/- 5 deg, then I would ahve no concern and b) at least with an impropperly calibrated torque wrench you put the same torque on each bolt, in a lot of cases (ie con rod bolts) this is more important than the actual torque value.
Regardless, I just did mine by eye with a helper and I'm moving on...
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84 Cab - sold! 89 Cab - not quite done 90C4 - winter beater |
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10-28-2003, 09:45 AM
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Banned
Join Date: Feb 2003
Location: So California
Posts: 3,787
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Good move.
Many things are not as precise as some would like to beleive. |
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10-29-2003, 12:35 AM
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1973 Porsche 911 2.4 MFI
The Blue Pheonix
1969 and 1971 Porsche 911T/E 2.0L and 2.2L
